KC20WN
KC20WN (Carlier SA) – High-Performance Cobalt-Chromium-Tungsten-Nickel Alloy
INTRODUCTION OF KC20WN
KC20WN, also known by the Carlier SA designation, is a cobalt-chromium-tungsten-nickel (Co-Cr-W-Ni) alloy engineered for exceptional high-temperature strength, oxidation stability, and corrosion resistance. This alloy is widely used in aerospace, defense, and high-performance industrial environments requiring reliability under extreme stress and heat. At Russian Metals, we supply premium-gradeKC20WN alloy in various forms — including rods, wires, sheets, round bars, and custom-forged components. All products are available in ready stock and supplied with full Mill Test Certificates (MTC) at competitive wholesale rates.
Chemical Composition of KC20WN
| Element | Min (%) | Max (%) |
|---|---|---|
| Co | Balance | – |
| Ni | 9.0 | 11.0 |
| Cr | 19.0 | 21.0 |
| W | 14.0 | 16.0 |
| Fe | – | 3.0 |
| C | 0.05 | 0.15 |
| Mn | 1.0 | 2.0 |
| S | – | 0.015 |
| Si | – | 0.30 |
| P | – | 0.015 |
Mechanical Properties
| Standard | Tensile Strength (Rm, MPa) | Yield Strength (Rp0.2%, MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| AIR 9165 | >850 | >340 | >30 | <282 |
Service Temperature: Up to 1100°C
Excellent resistance to salt projections from hydrochloric, nitric, phosphoric, and sulphuric acids at high temperatures.
Density: ~9.13 g/cm³
Standards: AIR 9165 (Forged pieces), ASTM F90
Density: ~9.13 g/cm³Standards: AIR 9165 (Forged pieces), ASTM F90
What Is BrOF10-1 Copper?
BrOF10-1 is a phosphor bronze alloy composed mainly of copper (~89%) with 10% tin and about 1% phosphorus. This combination delivers a balance of high electrical and thermal conductivity along with outstanding mechanical strength.
- High electrical & thermal conductivity while maintaining superior strength.
- Outstanding fatigue resistance & dimensional stability under heavy loads.
- Superior anti-friction properties — ideal for critical moving components.
It complies with GOST 5017-74 and corresponds to international equivalents such asCuSn10P (EN CW453K / UNS C52400).
Key Properties of BrOF10-1
Mechanical & Physical Strength
- Tensile strength: up to 350–450 MPa (depending on temper).
- Hardness: typically 80–120 HB.
- Density: approximately 8.8 g/cm³.
Electrical & Thermal Performance
- Excellent electrical conductivity — ideal for contact elements and connectors.
- High thermal conductivity suitable for precision parts exposed to heat.
Corrosion & Wear Resistance
- Resistant to seawater, industrial chemicals, and atmospheric corrosion.
- Excellent friction and sliding performance under high loads.
Heat Treatment
Solution Annealing: 1250°C for 1 hour, followed by air cooling.
Forging is typically performed between 1150°C and 950°C, followed by controlled cooling to achieve the desired mechanical properties.
Equivalent International Designations
| Standard | Designation |
|---|---|
| Carlier | KC20WN |
| UNS | R30605 |
| EN | 2.4964 |
| AFNOR | CoCr20W15Ni |
| BS (UK) | HR40 |
| ThyssenKrupp VDM | Conicro 5010W |
| Aubert & Duval | Alacrite XSH |
Key Features & Advantages
- Exceptional mechanical strength even at high temperatures (up to 1100°C).
- High resistance to oxidation and chemical corrosion.
- Reliable performance in aggressive chemical environments.
- Suitable for precision forging and custom machining.
Main Applications
- Aerospace: Stationary & rotating gas turbine components, combustor cans, transition ducts, afterburner liners.
- Power Generation: Turbine casings, heat exchangers, oven muffles.
- Chemical Processing: Reactors, high-temperature chemical equipment.
- Defense & Marine: High-strength, corrosion-resistant parts under extreme service conditions.
Supply Forms Available at Russian Metals
- KC20WN Rods & Round Bars – precision machined for aerospace & chemical industries.
- KC20WN Sheets & Plates – suitable for fabrication and thermal applications.
- KC20WN Forged Rings & Shafts – for turbines and heavy-duty machinery.
- Custom Forged Components – flanges, discs, bushings, tube sheets, and more.
We supply ready stock KC20WN copper alloy and offer wholesale KC20WN copper rates for bulk buyers.
Why Choose Russian Metals for KC20WN?
- Trusted supplier of Carlier SA KC20WN with global delivery.
- Material tested & certified to ASTM F90 and AIR 9165.
- Ready stock & competitive pricing with customization on request.
- Custom machining & forging services for aerospace, defense & chemical industries.
Order KC20WN Copper Alloy Today
Looking for KC20WN copper alloy in bars, rods, wires, or forged shapes?
At Russian Metals, we ensure high-quality supply, fast dispatch, and the best KC20WN wholesale rates for industrial and aerospace requirements.