Alloy L605 / Haynes 25 / UNS R30605 / KC20WN Cobalt Alloy – Сплав L605
Russian Metals supplies Alloy L605, also identified as Haynes 25, Cobalt Alloy 25, UNS R30605, KC20WN, and Кобальтовый сплав L605, for demanding aerospace, turbine, industrial, bearing, furnace, and medical-material applications. This cobalt-nickel-chromium-tungsten alloy combines high-temperature strength with good oxidation resistance, strong resistance to gaseous sulfidation, and excellent resistance to metal galling.
Our supply program can cover L605 sheet, L605 plate, strip, foil, L605 round bar, rod, billet, wire, welding wire, coated electrodes, forgings, and drawing-based custom components. Material can be offered against the applicable product-form standard, required delivery condition, inspection plan, dimensional tolerance, and certificate package.
Russian Metals supports project-based and repeat supply requirements with material traceability, chemical and mechanical test documentation, export packaging, and international delivery coordination. Final availability depends on product form, dimensions, quantity, standard revision, and inspection requirements.
Request a quote: Send the required alloy designation, product form, dimensions, quantity, standard, delivery condition, destination, and certificate requirements.
What Is Alloy L605?
Alloy L605 is a solid-solution-strengthened cobalt-based superalloy. Its principal alloying elements are chromium, tungsten, and nickel, with cobalt forming the balance. The alloy is widely described as an L605 cobalt chromium tungsten alloy or cobalt nickel chromium tungsten alloy.
The chromium content supports oxidation and hot-corrosion resistance. Tungsten contributes solid-solution strengthening and high-temperature mechanical performance. Nickel assists phase stability and fabrication characteristics, while the cobalt-rich matrix helps retain useful strength under severe thermal exposure.
L605 is selected where a component must operate under a combination of heat, mechanical loading, sliding contact, wear, galling, and oxidizing or sulfur-bearing gas exposure. It can be formed and welded by established industrial methods, but its rapid work-hardening response requires controlled machining and forming procedures.
For prolonged exposure in oxidizing environments, commonly published producer data describe service capability up to approximately 980°C / 1800°F. Actual permissible operating temperature must be determined from stress, atmosphere, exposure time, section thickness, thermal cycling, fabrication history, and the governing design code. Temperature capability must not be selected from a single headline value.
Primary Industrial Uses
Alternative Names and Designations
Alloy names are often mixed with standards and product specifications. The following table separates the principal grade designations from the standards that control specific forms or applications.
| Name or designation | Type | Practical meaning |
|---|---|---|
| Alloy L605 | Common grade designation | Cobalt-chromium-tungsten-nickel superalloy |
| Haynes 25 / Haynes Alloy 25 | Trade designation | Commercial name associated with UNS R30605 chemistry |
| Cobalt Alloy 25 | Generic commercial designation | Refers to the cobalt-based Alloy 25 family |
| UNS R30605 | Unified Numbering System designation | Standard UNS identity for the alloy |
| KC20WN | AIR/AFNOR designation | French aerospace designation commonly associated with L605 |
| CoCr20W15Ni | Composition-based designation | Indicates nominal cobalt, chromium, tungsten, and nickel chemistry |
| 2.4964 | Werkstoff number | Common European material number associated with the grade |
| Сплав L605 | Russian product-name keyword | Russian-language product designation |
| Кобальтовый сплав UNS R30605 | Russian product-name keyword | Russian-language cobalt-alloy designation |
Is L605 the Same as Haynes 25?
In normal commercial usage, L605 alloy, Haynes 25, Cobalt Alloy 25, and UNS R30605 refer to the same core cobalt-chromium-tungsten-nickel alloy family. KC20WN is commonly used as a corresponding aerospace designation.
However, a designation match is not enough to approve substitution. The required product form, chemical limits, mechanical requirements, heat treatment, dimensional tolerances, testing, surface condition, and standard revision must also match the engineering requirement.
Chemical Composition
The table below presents the commonly specified Alloy L605 chemical composition in weight percent. The controlling order specification and material test certificate remain authoritative for each order.
| Element | Minimum, wt.% | Maximum, wt.% | Function in the alloy |
|---|---|---|---|
| Cobalt, Co | Balance | Balance | High-temperature matrix and hot-strength retention |
| Chromium, Cr | 19.00 | 21.00 | Oxidation and hot-corrosion resistance |
| Tungsten, W | 14.00 | 16.00 | Solid-solution strengthening and creep performance |
| Nickel, Ni | 9.00 | 11.00 | Matrix stability and fabrication support |
| Iron, Fe | — | 3.00 | Controlled residual/addition |
| Manganese, Mn | 1.00 | 2.00 | Deoxidation and processing support |
| Carbon, C | 0.05 | 0.15 | Carbide strengthening and structure control |
| Silicon, Si | — | 0.40 | Deoxidation; restricted to control phases and processing |
| Phosphorus, P | — | 0.04 | Controlled impurity |
| Sulfur, S | — | 0.03 | Controlled impurity |
| Molybdenum, Mo | — | 1.00 where specified | Some producer specifications list a maximum limit |
The nominal composition is often summarized as approximately 51% cobalt, 20% chromium, 15% tungsten, 10% nickel, 1.5% manganese, and 0.10% carbon, with iron and other elements controlled within specification limits.
Composition Control for Critical Supply
For aerospace, medical, propulsion, and high-temperature rotating equipment, chemical composition should be verified through a heat-specific material test certificate. Additional positive material identification or independent laboratory analysis can be specified where required by the project quality plan.
Mechanical Properties
L605 mechanical properties depend on product form, thickness or diameter, solution-annealing cycle, grain size, cold work, test direction, and test temperature. The values below are representative typical data for solution-treated material and must not be treated as universal guaranteed minima.
Typical Room-Temperature Mechanical Properties
| Product form and condition | 0.2% yield strength | Ultimate tensile strength | Elongation |
|---|---|---|---|
| Solution heat-treated sheet | Approx. 476 MPa | Approx. 996 MPa | Approx. 54.7% |
| Solution heat-treated plate | Approx. 474 MPa | Approx. 1000 MPa | Approx. 58.8% |
| Hot-rolled, solution-annealed bar | Approx. 505 MPa | Approx. 1015 MPa | Approx. 60% |
| KC20WN-type supplied condition, typical | Approx. 460 MPa | Approx. 1005 MPa | Approx. 45% |
Typical Elevated-Temperature Tensile Properties
| Product form | Test temperature | 0.2% yield strength | Ultimate tensile strength | Elongation |
|---|---|---|---|---|
| Sheet, solution treated | 649°C | Approx. 256 MPa | Approx. 823 MPa | Approx. 54.2% |
| Plate, solution treated | 649°C | Approx. 230 MPa | Approx. 852 MPa | Approx. 64.3% |
| Bar, solution annealed | 649°C | Approx. 295 MPa | Approx. 725 MPa | Approx. 49% |
| Sheet, solution treated | 871°C | Approx. 231 MPa | Approx. 319 MPa | Approx. 97.8% |
| Plate, solution treated | 871°C | Approx. 221 MPa | Approx. 333 MPa | Approx. 104.7% |
| Bar, solution annealed | 871°C | Approx. 235 MPa | Approx. 370 MPa | Approx. 29% |
High elongation values at elevated temperature reflect test behavior under the stated laboratory conditions. They are not component design allowables.
Typical Hardness
| Product form | Condition | Typical hardness |
|---|---|---|
| Sheet | Solution annealed | Approximately 97 HRBW |
| Plate | Solution annealed | Approximately 99 HRBW |
| Bar | Solution annealed | Approximately 98 HRBW |
Cold working can substantially increase L605 hardness, tensile strength, and yield strength while reducing ductility. Any hardness requirement should therefore identify the product form, cold-work level, heat-treatment condition, and test method.
Creep and Stress-Rupture Performance
The L605 cobalt-based superalloy is valued for useful creep and stress-rupture strength across elevated-temperature service. Representative solution-annealed bar data show that the approximate stress producing rupture in 1,000 hours decreases as temperature increases:
| Temperature | Approximate 1,000-hour rupture stress |
|---|---|
| 732°C | 209 MPa |
| 760°C | 166 MPa |
| 816°C | 117 MPa |
| 871°C | 83 MPa |
| 927°C | 58 MPa |
| 982°C | 34 MPa |
These figures are screening data, not design allowables. Component design must use the approved material specification, code data, safety factors, product geometry, atmosphere, and actual heat-treatment condition.
Physical Properties
| Physical property | Typical value | Notes |
|---|---|---|
| Density | Approx. 9.1 g/cm³ | Published values vary slightly by producer and calculation basis |
| Melting range | Approx. 1330–1410°C | Not a recommended processing temperature |
| Electrical resistivity at room temperature | Approx. 88.6–90 µΩ·cm | Temperature dependent |
| Mean thermal expansion, near room temperature | Approx. 12.3 µm/m·°C | Increases with temperature |
| Elastic modulus at room temperature | Approx. 225–243 GPa | Static and dynamic test methods can differ |
| Thermal conductivity at room temperature | Approx. 10–13 W/m·K | Increases with temperature |
| Specific heat at room temperature | Approx. 0.405 J/g·°C | Typical value |
| Magnetic behavior | Essentially non-magnetic | Verify for the specific application and condition |
Temperature-Dependent Thermal Expansion
| Temperature range | Mean coefficient of thermal expansion |
|---|---|
| 20–200°C | Approx. 12.9–13.1 × 10⁻⁶ /°C |
| 20–400°C | Approx. 13.8–13.9 × 10⁻⁶ /°C |
| 20–600°C | Approx. 14.7–14.8 × 10⁻⁶ /°C |
| 20–800°C | Approx. 16.0–16.2 × 10⁻⁶ /°C |
Thermal expansion must be included in joint design, clearance calculations, dissimilar-metal assemblies, welding procedures, and high-temperature fastening systems.
Key Characteristics
High-Temperature Strength
Alloy L605 is one of the stronger formable cobalt-based solid-solution alloys. It retains useful tensile, creep, and rupture performance at temperatures where many conventional stainless steels and lower-alloy materials lose strength rapidly.
Oxidation Resistance
L605 oxidation resistance is suitable for prolonged exposure in oxidizing environments up to approximately 980°C under appropriate conditions. Shorter exposure at higher temperature may be possible, but thermal cycling, gas chemistry, velocity, contaminants, and stress can significantly alter performance.
For applications where oxidation resistance is the dominant requirement above approximately 980°C, an engineering review should compare newer high-temperature alloys rather than selecting L605 solely from legacy usage.
Sulfidation Resistance
L605 offers very good resistance to gaseous sulfidation and is used in hot environments containing sulfur-bearing combustion products. This is a major reason the alloy remains relevant for turbine, furnace, and propulsion components.
Galling and Wear Resistance
The cobalt-rich matrix gives Alloy L605 strong metal-to-metal galling resistance. The grade is used for bearing balls, races, sliding components, and high-temperature contact surfaces where adhesive wear is a concern.
Corrosion Resistance
L605 cobalt alloy corrosion resistance is strongest in high-temperature oxidizing and sulfidizing gas environments. The alloy was not developed as a universal aqueous corrosion alloy. Acid concentration, temperature, aeration, contaminants, crevice geometry, and galvanic coupling must be reviewed before use in liquid chemical service.
Formability
Solution-annealed L605 has good ductility and can be formed by conventional methods. The alloy work-hardens rapidly, so complex cold-forming operations may require intermediate annealing. Bend radii, tooling, lubrication, and forming sequence must be matched to thickness and condition.
Machinability
L605 machinability is lower than conventional stainless steel because the alloy is strong, abrasive, and rapidly work-hardening. Successful machining generally requires:
- Rigid machines and secure workholding
- Sharp, positive-geometry tooling
- Controlled feeds that cut below the work-hardened layer
- Consistent cutting action without rubbing or dwelling
- Effective cooling and chip evacuation
- Tooling and parameters selected for cobalt-based heat-resistant superalloys
Machining allowances and inspection stages should be planned before final heat treatment and finishing.
Weldability
L605 weldability is generally good when surfaces, filler metal, heat input, interpass temperature, and restraint are controlled. GTAW/TIG, GMAW/MIG, SMAW, electron-beam welding, and resistance welding are commonly used. Submerged-arc welding is generally avoided because its high heat input and slow cooling can increase cracking risk.
Standards and Specifications
| Standard or designation | Typical scope for Alloy L605 |
|---|---|
| UNS R30605 | Unified alloy designation |
| AMS 5537 | Sheet, plate, and strip |
| AMS 5759 | Billet, rod, bar, forgings, and rings as covered by the applicable revision |
| AMS 5796 | Bare welding rods and wire |
| AMS 5797 | Coated welding electrodes |
| ASTM F90 | Wrought cobalt-20 chromium-15 tungsten-10 nickel alloy for surgical implant applications |
| ISO 5832-5:2022 | Wrought cobalt-chromium-tungsten-nickel alloy for surgical implants |
| KC20WN | AIR/AFNOR aerospace designation associated with the alloy |
| 2.4964 / CoCr20W15Ni | European material references commonly associated with L605 |
Product-Form Standard Selection
A standard number should never be listed without confirming that it covers the required form. AMS 5537 is used for sheet, plate, and strip, while AMS 5759 applies to billet, rod, bar, and forgings. AMS 5796 covers bare welding wire or rod, and AMS 5797 covers coated electrodes.
Tube and pipe are sometimes offered commercially in L605 chemistry, but the common AMS product-form standards listed above do not automatically certify tube or pipe. Such supply must be governed by an agreed manufacturing specification, drawing, inspection plan, and acceptance criteria.
Medical Material Requirements
ASTM F90 and ISO 5832-5 apply to wrought cobalt-chromium-tungsten-nickel material intended for surgical implant manufacturing. Compliance of raw material does not by itself certify a finished medical device. Device design, processing, cleaning, surface condition, biocompatibility assessment, regulatory controls, and validation remain separate requirements.
Equivalent Grades
| Commercial or standards reference | Relationship to L605 |
|---|---|
| Haynes 25 | Common commercial designation for the same alloy family |
| Alloy 25 / Cobalt Alloy 25 | Common generic commercial designation |
| UNS R30605 | UNS designation |
| KC20WN | AIR/AFNOR designation commonly treated as corresponding |
| CoCr20W15Ni | Composition-based designation |
| 2.4964 | Common Werkstoff number |
| ASTM F90 alloy | Medical-material specification using UNS R30605 chemistry |
| ISO 5832-5 alloy | Implant-material specification for wrought Co-Cr-W-Ni alloy |
Equivalent-grade disclaimer: Equivalent names do not prove full interchangeability. Before substitution, compare chemistry, melting practice, product form, dimensions, grain size, mechanical properties, heat treatment, surface condition, inspection requirements, certificate type, and revision level.
Available Product Forms
Russian Metals can coordinate supply of the following L605 product forms, subject to mill capability and project requirements.
L605 Sheet, Plate, Strip, and Foil
- L605 sheet for hot-section fabricated components
- L605 plate for machined or formed high-temperature parts
- L605 strip and coil for precision-formed components
- L605 foil for thin-gauge thermal and aerospace applications
- Haynes 25 sheet and plate to AMS 5537 where specified
- UNS R30605 sheet, plate, and strip with heat traceability
L605 Bar, Round Bar, Rod, and Billet
- L605 round bar for machined components
- L605 bar in standard or drawing-based cross-sections
- L605 rod for high-temperature hardware
- Billet and forging stock
- Haynes 25 bar and UNS R30605 bar to AMS 5759 where specified
- KC20WN forging stock for aerospace and propulsion requirements
L605 Wire and Welding Products
- L605 wire
- Haynes 25 wire
- L605 welding wire and bare welding rod to AMS 5796 where specified
- Coated electrodes to AMS 5797 where specified
- Straight length, spool, or project-specific packaging subject to availability
Forgings and Custom Components
- Open-die or closed-die forging stock
- Rings and near-net-shape forgings where supported
- Drawing-based blanks
- Cut-to-length bar and plate
- Machined or semi-finished components through approved processing routes
- Custom inspection and traceability plans
Sizes and Delivery Conditions
Exact size availability varies by form, mill route, quantity, and specification. Russian Metals does not publish unsupported universal size limits because a range available for commercial sheet may not apply to aerospace-certified sheet, medical bar, or a drawing-controlled forging.
| Product form | Dimensional information required for quotation | Common delivery condition |
|---|---|---|
| Sheet / plate | Thickness, width, length, flatness, surface finish | Solution heat treated |
| Strip / coil / foil | Thickness, width, coil ID/OD, coil weight, edge condition | Solution treated or controlled cold-work condition |
| Round bar / rod | Diameter, length, straightness, surface condition | Hot rolled, cold finished, ground, or solution annealed |
| Billet | Cross-section, length, machining allowance | Forging or remelt stock condition |
| Wire | Diameter, spool or straight length, finish | Solution treated, cold worked, or welding-wire condition |
| Forging | Drawing, envelope, machining allowance, grain-flow requirement | Solution treated or supplied for final treatment |
| Custom component | Drawing, tolerances, critical characteristics, inspection plan | Defined by approved manufacturing route |
Solution-Annealed Condition
Alloy L605 is commonly supplied in the solution heat-treated condition. A typical final solution-treatment range is approximately 1175–1230°C, followed by rapid cooling or water quenching where required to obtain the intended structure and properties.
A producer-specific KC20WN route may use approximately 1210°C for 30 minutes followed by air cooling for a defined section and product condition. Heat-treatment instructions must therefore come from the controlling material specification, qualified procedure, and component geometry rather than from a generic web value.
Dimensional Tolerances
Dimensional tolerances should be defined by:
- Applicable AMS, ASTM, ISO, EN, AIR, or drawing requirement
- Product form and manufacturing process
- Thickness or diameter
- Straightness, flatness, roundness, and edge condition
- Machining allowance
- Surface finish
- Inspection method and sampling plan
Applications
Aerospace and Gas Turbine Components
L605 alloy for aerospace applications is used where high-temperature strength, oxidation resistance, and fabrication capability are required. Typical components include:
- Gas turbine combustion chambers
- Combustion liners and transition components
- Afterburner parts
- Jet engine hot-section components
- Turbine seals, clips, supports, and fabricated hardware
- High-temperature fasteners
- Exhaust and flame-containing components
Rocket and Propulsion Components
KC20WN and UNS R30605 are used in liquid-propulsion and rocket-engine applications, including hot structures, nozzles, combustion-zone components, and hardware exposed to combined heat and mechanical stress. Material selection must account for propellant chemistry, thermal cycling, weld joints, pressure loading, and life requirements.
Bearing Components
Alloy L605 for bearing components benefits from high cold-worked strength and excellent galling resistance. It has been used for bearing balls, bearing races, and sliding contact components operating under heat or limited lubrication.
Industrial Furnace Components
L605 high-temperature alloy can be used for furnace hardware, supports, muffles, liners, fixtures, and components exposed to oxidizing or sulfur-bearing gases. Furnace atmosphere and contamination must be reviewed before final selection.
Medical Implants
ASTM F90 L605 medical alloy and ISO 5832-5 material are used as raw material for selected surgical implant components. Medical supply must be ordered specifically to the required implant-material standard and quality system. Standard industrial L605 must not be represented as implant-qualified without the required documentation, processing controls, and regulatory assessment.
Manufacturing and Processing
Hot Working and Forging
L605 may be forged and hot worked after uniform heating. Published producer guidance describes hot-working near 1205°C / 2200°F for appropriate sections. The complete component must reach a controlled temperature, and deformation should be completed within the qualified hot-working window.
Forging procedures must control strain rate, reduction, reheating, grain size, surface condition, and final solution treatment. Large or critical KC20WN forgings should be produced to an approved process route.
Cold Forming
The alloy has good solution-annealed ductility but work-hardens quickly. Cold forming should use generous radii, robust tooling, suitable lubrication, and planned intermediate anneals for complex shapes.
Cutting
Waterjet, abrasive, sawing, machining, and qualified thermal cutting methods may be used depending on form and final requirements. Heat-affected material from thermal cutting must be removed where required by the drawing or specification.
CNC Machining
CNC machining should prioritize process stability over aggressive headline cutting speed. Tool wear, work hardening, thermal load, and dimensional movement must be considered. Roughing, stress management, heat treatment, semi-finishing, and final inspection should be sequenced deliberately.
Surface Finishing
Surface finishing may include grinding, polishing, pickling, blasting with compatible media, or project-specific finishing. Embedded iron contamination and contact with copper-bearing materials around weld preparation should be avoided where specified.
Welding and Heat Treatment
Welding Processes
L605 can be welded using:
- GTAW / TIG
- GMAW / MIG
- SMAW
- Electron-beam welding
- Resistance welding
Submerged-arc welding is generally not recommended due to high heat input and slow cooling.
Filler Metal
Matching-composition L605 filler metal is commonly selected. AMS 5796 applies to bare welding wire and rod, while AMS 5797 applies to coated electrodes. Dissimilar-metal joints require a qualified filler selection based on base materials, service temperature, dilution, thermal expansion, and corrosion environment.
Joint Preparation
Before welding:
- Remove oil, grease, sulfur-bearing compounds, marking residues, and dirt
- Use clean tools dedicated to high-alloy materials where practical
- Avoid copper contamination in the joint area
- Control fit-up and restraint
- Use a qualified purge and shielding-gas practice where needed
Preheat and Interpass Temperature
Preheat is not generally required beyond normal shop temperature. Interpass temperature should typically be maintained below approximately 93°C / 200°F, unless a qualified procedure specifies otherwise.
Post-Weld Heat Treatment
Post-weld heat treatment is not generally required for every L605 weld. However, fabricated components that require optimum structure and properties may receive a final solution heat treatment. The need for final heat treatment depends on product form, fabrication strain, service condition, dimensional stability, and specification.
Solution Annealing
A common final solution-treatment range is approximately 1175–1230°C, followed by rapid cooling. Lower-temperature intermediate annealing may support forming, but it can allow carbide precipitation. A final full solution treatment may therefore be required for optimum structure.
Quality Testing
Russian Metals can coordinate testing and inspection according to the applicable specification and project quality plan.
Chemical Analysis
- Heat analysis
- Product analysis where specified
- Positive material identification
- Independent laboratory verification when required
Mechanical Testing
- Room-temperature tensile testing
- Elevated-temperature tensile testing
- Creep or stress-rupture testing where specified
- Hardness testing
- Bend or formability testing where applicable
Metallurgical Examination
- Grain-size evaluation
- Inclusion assessment for medical specifications
- Microstructure examination
- Macroetch or forging-quality examination where required
Dimensional and Surface Inspection
- Thickness, width, length, diameter, and straightness
- Flatness and roundness
- Surface visual inspection
- Surface finish measurement
- Ultrasonic, penetrant, radiographic, or other NDT where specified
Material Traceability
Traceability can include heat number, lot number, product-form identification, transfer marking, test report linkage, packaging labels, and inspection-release documentation.
Certificates
Available documentation depends on the order, mill, standard, and inspection level.
- Material Test Certificate
- Chemical analysis report
- Mechanical test report
- Heat-treatment record
- Certificate of conformity
- Inspection certificate
- Positive material identification report
- NDT report where specified
- Dimensional inspection report
- Country-of-origin certificate
- Packing list and traceability labels
- Third-party inspection release where agreed
Certificate type and third-party inspection must be confirmed before production or material allocation. They cannot always be added after dispatch preparation.
Packaging and International Delivery
L605 sheet, plate, bar, wire, and forgings can be prepared for domestic or international delivery with packaging selected for weight, surface condition, transport method, and destination.
Packaging options can include:
- Wooden boxes or crates
- Reinforced pallets
- End protection for bars and rods
- Moisture-resistant wrapping
- Separation layers for sheet and plate
- Spool and coil protection
- Heat-number and item-level labels
- Custom marks linked to the packing list
- Export documentation support
Why Choose Russian Metals?
Russian Metals provides a focused supply route for Alloy L605, Haynes 25, UNS R30605, and KC20WN requirements.
- Multiple L605 product forms
- Support for AMS 5537, AMS 5759, AMS 5796, AMS 5797, ASTM F90, and ISO 5832-5 requirements
- Custom dimensions and drawing-based supply
- Heat-specific quality documentation
- Chemical, mechanical, dimensional, and NDT coordination
- Export packaging
- International delivery support
- Bulk and repeat-order supply planning
- Technical clarification of grade, form, condition, and standard
- Clear equivalency and substitution control
We do not treat all “Alloy 25” materials as interchangeable. The quotation is matched to the cobalt-based L605 / UNS R30605 requirement, required form, standard, condition, and testing scope.
Request a Quote
For an accurate quotation, provide:
| Required detail | Example information |
|---|---|
| Alloy designation | L605, Haynes 25, UNS R30605, KC20WN, CoCr20W15Ni |
| Product form | Sheet, plate, strip, foil, bar, rod, wire, billet, forging |
| Dimensions | Thickness, width, length, diameter, or drawing |
| Quantity | Pieces, kilograms, metres, or annual demand |
| Standard | AMS 5537, AMS 5759, AMS 5796, AMS 5797, ASTM F90, ISO 5832-5 |
| Delivery condition | Solution treated, cold worked, ground, forged, or drawing-defined |
| Surface condition | Mill finish, ground, polished, machined, or specified roughness |
| Testing | Tensile, hardness, PMI, NDT, elevated-temperature tests |
| Certificates | MTC, conformity certificate, inspection certificate, origin certificate |
| Destination | City, country, port, or delivery term |
| Required schedule | Target dispatch or project date |
Quote CTA: Submit your complete Alloy L605 requirement to Russian Metals for a technical and commercial offer.
Frequently Asked Questions
EN/RUIs L605 the same as Haynes 25?
Yes. L605 and Haynes 25 are commonly used for the same cobalt-chromium-tungsten-nickel alloy family identified as UNS R30605. Product-form specification and delivery condition must still be checked.
EN/RUIs KC20WN equivalent to L605?
KC20WN is an AIR/AFNOR designation commonly associated with L605, UNS R30605, CoCr20W15Ni, and material number 2.4964. Final substitution requires document-by-document comparison.
EN/RUWhat is UNS R30605?
UNS R30605 is the Unified Numbering System designation for the cobalt-based alloy commonly known as Alloy L605 or Haynes 25.
EN/RUWhat is the Alloy L605 chemical composition?
The alloy typically contains 19–21% chromium, 14–16% tungsten, 9–11% nickel, 1–2% manganese, 0.05–0.15% carbon, up to 3% iron, controlled silicon, phosphorus, and sulfur, with cobalt as the balance.
EN/RUWhat temperatures can L605 withstand?
Producer data describe good oxidation resistance for prolonged exposure up to approximately 980°C / 1800°F and useful strength across a broad elevated-temperature range. The allowable component temperature depends on load, time, atmosphere, thermal cycling, design code, and product condition.
EN/RUWhich standards apply to L605?
Common standards include AMS 5537 for sheet, plate, and strip; AMS 5759 for billet, rod, bar, and forgings; AMS 5796 for bare welding wire and rod; AMS 5797 for coated electrodes; ASTM F90 and ISO 5832-5 for surgical implant material.
EN/RUIs L605 suitable for aerospace applications?
Yes. Alloy L605 is used for gas turbine, combustion, afterburner, jet engine, rocket propulsion, bearing, and high-temperature aerospace components. Aerospace orders should identify the exact AMS, AIR, drawing, and inspection requirements.
EN/RUIs L605 suitable for medical implants?
L605 can be supplied as medical raw material under ASTM F90 or ISO 5832-5. Finished-device suitability requires separate design, manufacturing, biocompatibility, validation, and regulatory controls.
EN/RUCan L605 be welded?
Yes. GTAW, GMAW, SMAW, electron-beam, and resistance welding are commonly used. Matching filler metal, clean joint preparation, controlled interpass temperature, and a qualified procedure are important.
EN/RUWhich L605 product forms are available?
Common forms include sheet, plate, strip, foil, bar, round bar, rod, billet, wire, welding wire, coated electrodes, forgings, rings, and custom drawing-based components. Availability depends on size, standard, and quantity.
EN/RUCan custom sizes be supplied?
Yes. Russian Metals can coordinate custom dimensions, cut lengths, drawing-based forgings, machining allowances, surface requirements, and project-specific inspection. Feasibility is confirmed during quotation.
EN/RUHow is L605 alloy price determined?
L605 alloy price depends on cobalt and tungsten market levels, product form, dimensions, quantity, standard, heat-treatment condition, testing, certificates, machining, packaging, and delivery destination. A complete technical requirement is necessary for an accurate quotation.
Alloy L605 / Haynes 25 with MTC and Export Support
Send the required alloy designation, product form, dimensions, quantity, standard, delivery condition, testing, certificate requirements and destination for a technically correct quotation.
Alloy L605, Haynes 25, UNS R30605 and KC20WN supply support.
Chemical, mechanical, heat-treatment and inspection documentation.
Product-form, cut-to-size, forging and drawing-based supply support.
Export packaging and international delivery assistance.