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Help CenterValve Steel X40crsimo10-2 1.4731 Stainless Steel Round 4cr10si2mo Steel Rod
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X40CrSiMo10-2 is a martensitic stainless steel that is primarily used for manufacturing exhaust valves and other high-temperature components in internal combustion engines. It is known for its excellent high-temperature strength, oxidation resistance, and wear resistance.
Chemical Composition (wt.%)Carbon (C): 0.35 - 0.45
Silicon (Si): 2.00 - 3.00
Manganese (Mn): ≤ 0.80
Phosphorus (P): Max 0.04
Sulfur (S): Max 0.03
Chromium (Cr): 9.50 - 11.50
Molybdenum (Mo): 0.80 - 1.30
Nickel (Ni): Max 0.50
Proof Strength (Rp0.2): ≥ 350 MPa
Tensile Strength (Rm): ≥ 650 MPa
Impact Energy (KV): 275 J
Elongation at Fracture (A): 8% - 25%
Reduction in Cross Section on Fracture (Z): 21%
Brinell Hardness (HBW): 200 - 250
Density: 7.85 g/cm³
Thermal Expansion: 10 - 10 e-6/K
Thermal Conductivity: 25 W/m·K
Specific Heat: 460 J/kg·K
Melting Temperature: 1450 - 1510 °C
Resistivity: 0.55 Ohm·mm²/m
Annealing: Typically involves heating to a temperature range of 850°C - 870°C, followed by slow cooling to achieve a soft and ductile microstructure.
Quenching: Heating to a temperature of 1050°C, holding for a period, and then air cooling.
Tempering: After quenching, tempering at 600°C to achieve the desired hardness and toughness.
Normalizing: Heating to a temperature of 850°C - 870°C, followed by air cooling.
Quenching and Tempering (Q&T): Quenching followed by tempering to achieve a combination of high strength and toughness.
X40CrSiMo10-2 steel is widely used in the automotive and industrial sectors for components that require high strength and good wear resistance at elevated temperatures. It is particularly suitable for:
Engine Valves: Due to its high-temperature strength and resistance to oxidation and corrosion.
High-Temperature Components: Such as exhaust systems, turbochargers, and other parts that operate in high-temperature environments.
X40CrSiMo10-2 steel is covered by the following standards:
DIN/EN: X40CrSiMo10-2
AISI/SAE: SUH3
WNR: 1.4731
AFNOR: Z40CSD10
UNF: F.3221-X40CrSiMo10-02
JS1: SUH3
Our factory mainly produce below vavle steel grades:
Din 1.4718 X45crsi93 and jis suh1 china 4cr9si2 vavle steel
Din 1.4871 X53crmnnin21-9 astm21-4N and JIS SUH35 vavle steel
DIN X40CrSiMo10-2 1.4731 JIS SUH3 China 4cr10si2mo vavle steel
21-2N X55CrMnNiN20-8 1.4875 x55cr2mn8ni2n vavle steel
| Technical parameters | |
| Material | SUH-3 stainless steel round bar |
| Size | Diameter:5mm-1000mm |
| Length:3000mm-6000mm | |
| Origin place | Made In China |
| Delivery Condition | Hot rolled,cold drawn,forged |
| Surface require | Black,grinding,bright,polish,turn,peel |
| Heat treatment | Quenched,Tempered,annealed |
| Packing | seaworthy packing,wooden case,carton,woven bag or at client's requires |
| Delivery time | In 20-30 days |
| Trade Term | EXW,FOB,CIF |
| Payments | T/T or L/C at sight |
| Port | China main Port,such as shanghai, Dalian, shenzhen port. |
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📧 Email: zhongzheng@zjzzgy.cn
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