Available 4Cr10Si2Mo Valve Steel, Juming 40Cr10Si2Mo Stainless Steel Bar, S48140 Internal Combustion Engine Valve Steel

4Cr10Si2Mo is a medium carbon martensitic valve steel. Valve steel, also known as valve steel.

It is an important branch of heat-resistant steel, used for manufacturing various internal combustion engine valves and is a specialized material specifically for making intake and exhaust valves for internal combustion engines.

Valve steel operates under extremely harsh conditions, enduring long-term exposure to high temperatures of 400-900°C and explosion pressures ranging from 3447.5 to 6895.0 kPa. It withstands the high-temperature corrosion and erosion from corrosive gases, frequent and rapid high-speed movement, friction, and impact, all while carrying heavy loads.

Therefore, the valve material 4Cr10Si2Mo must possess excellent thermal strength, thermal hardness, fatigue strength, wear resistance, and anti-oxidation and anti-corrosion properties. The internal structure must be free of defects, and the surface must not have cracks.

Additionally, a low coefficient of linear expansion is required, and the manufacturing process for valves also imposes strict requirements on the quality of the steel.

4Cr10Si2Mo valve steel is difficult to produce, challenging to cold work, and has a high scrap rate.

4Cr10Si2Mo features excellent heat-resistant properties, suitable for use in internal combustion engine intake valves, exhaust valves for light-load engines, etc. It is a well-established valve steel grade in use.

As per the execution standard, it is generally GJB 4050-2001.

Austenitic: 20Cr21Ni12N, 33Cr23Ni8Mn3N, 45Cr14Ni14W2Mo, 50Cr21Mn9Ni4Nb2WN, 53Cr21Mn9Ni4N, 55Cr21Mn9Ni4N

4Cr10Si2Mo Characteristics and Application Range:

High thermal efficiency and good assistive learning properties, suitable for intake valves of internal combustion engines, exhaust valves of light-load engines, etc.

Chemical Composition: 4Cr10Si2Mo

Carbon (C): 0.35～0.45

Silicon (Si): 1.90～2.60

Manganese (Mn): ≤0.70

Sulfur S: ≤0.030

Phosphorus (P): ≤0.035

Chromium (Cr): 9.00~10.50

Nickel (Ni): ≤0.60

Molybdenum (Mo): 0.70~0.90

4Cr10Si2Mo Hot Rolled

4Cr10Si2Mo Cold Drawn

4Cr10Si2Mo thin-skin

40Cr10Si2Mo: Standard for Internal Combustion Engine Alloy Steel Bars - GB/T 12773-2008.

It belongs to stainless heat-resistant steel and is an important type of steel for power machinery.

4Cr14Ni14W2Mo has been developed first overseas, and a newer grade, 3Cr23Ni8Mn3N, has already been developed.

Jiuming Special Steel specializes in: non-ferrous alloy metals, nickel-based high-temperature alloys, nickel-based corrosion-resistant alloys, precision alloys, Hastelloy, Stellite, Monel alloys, special stainless steels, copper alloys, etc. Their mechanical properties at both room temperature and high temperatures, as well as the steel's resistance to gas corrosion, are superior to those of the previous generation.