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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
Mechanical Properties
- 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
Physical Properties
- 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
Heat Treatment
- 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.
Applications
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.
Standards
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
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. |
SICHUAN LIAOFU SPECIAL STEEL COMPANY.,LTD
UNS S31803 and Super Duplex UNS S3276, alloy steel 4130/4140/8620 ,high speed tool T1/M2/M35/M42 and die steel D2/D3/H13/H21/P20,The products covers special steel round, square, flat, wire rod, wire, sheet, pipe, strip and heavy forgings.Produces forged round steel (¢120~850mm) and square steel (120~550mm) of various steel grades. The largest production steel ingot 13T, mainly forged alloy steel. The annual output of forged round can reach 60,000 tons.
We Have State Of The Art Production Lines With Leading Edge Technology For Bearing Steel 100Cr6, Stainless Steel 304 / 316 / Duplex UNS S31803 And Super Duplex UNS S3276, Alloy Steel 4130/4140/8620, High Speed Tool T1/M2/M35/M42 And Die Steel D2/D3/H13/H21/P20. The Products Covers Special Steel Round, Square, Flat, Wire Rod, Wire, Sheet, Pipe, Strip And Heavy Forgings. Produces Forged Round Steel (¢120~850mm) And Square Steel (120~550mm) Of Various Steel Grades.
Alloy Steel | 4140,4142,42CrMo4,1.7225,SCM440,4130,SCM430,25CrMo4,1.7218,34CrNiMo6, 1.6582,4340,SNCM439,36CrNiMo4,1.6511,SACN645,1340,SMn438,SNC236 | |||
Tool Steel | H13,1.2344,SKD61,D2,SKD11,1.2379,1.2510,01,SKS3,95MnWCr5,D3,SKD1,1.2419, SKS31,H21,SKD5,1.2581,P20,35CrMo7,1.2738,1.2316,M2 | |||
Bearing Steel | GCr15,52100,SUJ1,SUJ2,100Cr6,1.2067,55C,8620,4320,9310,440C,M50 | |||
Spring Steel | 9260,SUP6,SUP7,1.7108,54SiCr6,1.7102,5155,SUP9,1.7176,5160,1.7177,6150, SUP10,51CrV4,1.8159 | |||
Stainless Steel | 321,sus321,1.4541,304,SUS304,1.4301,410,SUS410,1.4006,420,1.4021,1.4028, 434,1.4113,316L,SUS316L,1.4435,630,1.4542,431,1.4057 | |||
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A: We are factory.
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A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according toquantity.
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A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
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A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.lf you have another question, pls feel free to contact us.
