15X
15X Steel – Manufacturer, Stockist & Supplier in India (Russian Metals)
15X steel is a high-quality structural carbon steel known for its excellent strength, toughness, and wear resistance, making it ideal for critical applications in aerospace, automotive, and heavy engineering industries. At Russian Metals, we are a trusted manufacturer, stockist, and supplier of 15X steel, offering rods, round bars, pipes, and wires with competitive pricing and ready stock. Our experts provide technical guidance, custom sizing, and fast delivery, helping industries and traders get reliable, high-quality 15X steel for critical applications.
INTRODUCTION OF 15X
15X steel is a high-quality structural carbon steel known for its excellent strength, toughness, and wear resistance, making it ideal for critical applications in aerospace, automotive, and heavy engineering industries. At Russian Metals, we are a trusted manufacturer, stockist, and supplier of 15X steel, offering rods, round bars, pipes, and wires with competitive pricing and ready stock. Our experts provide technical guidance, custom sizing, and fast delivery, helping industries and traders get reliable, high-quality 15X steel for critical applications.
| Grade : | 15X |
| Substitute: | 10, 20 |
| Classification : | High quality structural carbon steel |
Why Choose 15X Steel?
High strength-to-weight: ideal for lightweight structural parts.
Good corrosion resistance: suited for harsh, cyclic environments.
Clean machinability: stable tolerances for CNC and finishing operations.
Heat & wear performance: reliable under moderate temperature and friction loads.
Consistency & traceability: mill test certificates (MTC) available on request.
Chemical composition in % for grade 15 ( 15 )
| C | Si | Mn | Ni | S | P | Cr | Cu | As |
|---|---|---|---|---|---|---|---|---|
| 0.12 - 0.19 | 0.17 - 0.37 | 0.35 - 0.65 | max 0.3 | max 0.04 | max 0.035 | max 0.25 | max 0.3 | max 0.08 |
15X Steel for Aerospace Components
Primary keyword focus: 15X
Secondary keyword focus: 15X steel aerospace components
Typical aerospace uses (indicative):
- Fasteners & sleeves
- Brackets, fixtures, and housings
- Landing-gear bushings, couplings, and ancillary fittings
- Sensor mounts and structural sub-assemblies
Note: Final grade selection depends on drawing/spec, heat treatment, and compliance requirements. Our team matches 15X to your exact aerospace or industrial spec and provides alternatives where necessary.
Temperature of critical points for grade 15 ( 15 ).
| Ac1 = 735 , Ac3(Acm) = 860 , Ar3(Arcm) = 840 , Ar1 = 685 |
Mechanical properties under Т=20oС for grade 15 ( 15 )
| Assortment | Dimension | Direct. | σB | σT | δ5 | ψ | KCU | Heat treatment |
|---|---|---|---|---|---|---|---|---|
| - | (mm) | - | MPa | MPa | % | % | kJ/m² | - |
| Sheet heat-treatment, GOST 4041-71 | 4 - 14 | 320-440 | 35 | |||||
| Pipe, GOST 5005-82 | 510 | 430 | 8 | |||||
| Rolled stock, GOST 1050-88 | to 80 | 370 | 225 | 27 | 55 | Normalizing | ||
| Rolled stock cold-worked , GOST 1050-88 | 440 | 8 | 45 | |||||
| Rolled stock annealed , GOST 1050-88 | 340 | 23 | 55 | |||||
| Band annealed , GOST 2284-79 | 310-490 | 20 | ||||||
| Band cold-worked , GOST 2284-79 | 440-780 |
Available Forms & Sizes (Ready Stock / Made-to-Order)
Rods & Round Bars
Dia: 6 mm – 300 mm
Lengths: 3 m / 6 m or cut-to-size
Tolerances: h9–h11 (on request)
Pipes & Tubes
OD: 10 mm – 219 mm
Thickness: 1.5 mm – 25 mm
Supply: seamless / welded per requirement
Wires & Coils
Dia: 0.8 mm – 12 mm
Packaging: coils/spools, annealed or work-hardened
| Brinell hardness for 15 ( 15 ) , Sheet GOST 4041-71 | HB 10 -1 = 121 MPa
| Brinell hardness for 15 ( 15 ) , Bar GOST 10702-78 | HB 10 -1 = 125 MPa
| Brinell hardness for 15 ( 15 ) , Rolled stock GOST 1050-88 | HB 10 -1 = 197 MPa
| Brinell hardness for 15 ( 15 ) , Rolled stock GOST 1050-88 | HB 10 -1 = 149 MPa
| Brinell hardness for 15 ( 15 ) , Rolled stock GOST 1050-88 | HB 10 -1 = 149 MPa
| Brinell hardness for 15 ( 15 ) , Sheet trick GOST 1577-93 | HB 10 -1 = 143 MPa
Processing & Services
Cut-to-length, turning, peeling, grinding
Heat treatment (normalize, quench & temper—as per PO)
CNC machining for pilot lots / samples
Ultrasonic / PMI testing and MTC on request
Export-ready packing with moisture protection
Typical Applications
Aerospace: brackets, fixtures, fasteners (as per drawing/spec)
Defense & Mobility: precision shafts, couplings
Energy & Process: pump parts, instrumentation supports
General Engineering: jigs, tooling, wear parts
Why Russian Metals?
Breadth of inventory in 15X (rods, bars, pipes, wires)
Technical guidance from enquiry to delivery
Competitive pricing with mill-backed assurance
Fast dispatch and global logistics support
Technological properties for grade 15 ( 15 )
| Weldability : | without limitations. |
| Flakes : | not predisposed |
| Temper brittleness: | not predisposed |
Purchasing Guide
What to share for a quick quote
Drawing/spec (if any), sizes & tolerances
Quantity / cut lengths
Required tests (UT, PMI, IGC, etc.)
Delivery location & timeline
Lead Times
Ex-stock: immediate
MTO/custom: depends on size/qty/processing (we’ll confirm at quote stage)
Physical properties for grade 12KH18N10T ( 12Х18Н10Т )
| T | E 10- 5 | α 10⁶ | λ | ρ | C | R 10⁹ |
|---|---|---|---|---|---|---|
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.01 | 53 | 7850||||
| 100 | 1.92 | 12.4 | 53 | 7827465 | 233 | |
| 200 | 1.85 | 13.2 | 53 | 7794 | 486296 | |
| 300 | 1.76 | 13.9 | 49 | 7759 | 515387 | |
| 400 | 1.56 | 14.4 | 46 | 7724 | 532487 | |
| 500 | 14.8 | 43 | 7687 | 565607 | ||
| 600 | 15.1 | 39 | 7648 | 586753 | ||
| 700 | 15.3 | 36 | 7611 | 620904 | ||
| 800 | 14.1 | 32 | 7599 | 6911092 | ||
| 900 | 13.2 | 30 | 7584 | 708 | 1140 | |
| T | E 10- 5 | α 10⁶ | λ | ρ | C | R 10⁹ |
Equivalent steels for grade 08KH18N10T ( 08Х18Н10Т )
Warning! Indicated both exact and nearest equivalents.
| USA | Germany | Japan | France | England | European | Italy | Belgium | Spain | China | Sweden | Bulgaria | Hungary | Poland | Romania | Czechia | Austria | Switzerland | South Korea |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| - | DIN,WNr | JIS | AFNOR | BS | EN | UNI | NBN | UNE | GB | SS | BDS | MSZ | PN | STAS | CSN | ONORM | SNV | KS |
| 1015 1016 1017 1018 G10150 G10170 M1015 M1017 | 1.0401 1.1141 C15 C15E Ck15 Cq15 RSt42-2 | S15 S15C S15CK S17C | C18RR XC12 XC15 XC18 | 040A15 080M15 C15E | 1.1132 1.1141 2C15 C15E2C C15Е | C15 C16 | C16-2 | C15E C15k C16k F.1110 F.1511 | 15 H15A ZG200-400 s | 1370 | 15 | C15 | 15 | OLC15 OLC15AT OLC15X | 12020 12023 | RC15 | Ck15 | SM15C SM15CK |
Types of delivery of grade 15 ( 15 )
- B03 - Metal forming treatment. Forgings
- В22 - Graded and shaped rolling
- B23 - Sheets and Strips
- B24 - Ribbons
- В32 - Graded and shaped rolling
- B33 - Sheets and Strips
- B34 - Ribbons
- В62 - Steel pipes and connecting parts to them
- В32 - В71 - Low-carbon steel wire
- В72 - Medium-high and high-carbon steel wire
- B76 - Metal nets
Specification
Mechanical properties :
σB - Tensile strength [MPa]
σT - Yield stress [MPa]
δ5 - Specific elongation at fracture [%]
ψ - Reduction of area [%]
KCU - Impact strength [kJ/m²]
HB - Brinell hardness [MPa]
Physical properties :
T - Test temperature [Grade]
E - Young modulus [MPa]
α - Coefficient of linear expansion (20° - T) [1/Grade]
λ - Thermal (heat) condition coefficient [Watt/(m·Grade)]
ρ - Density [kg/m³]
C - Specific heat (range 20° - T) [J/(kg·Grade)]
R - Electrical resistance [Ohm·m]
Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing