Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 100crmnsi6-4 bearing steel gcr15simn alloy steel bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
100CrMnSi6-4 Bearing Steel GCr15SiMn Alloy Steel bar
Material:
GCr15SiMn 100CrMn6 1.3520 B3 100CrMnSi6-4 SUJ3 High-Carbon Chrome Bearing Steel Bars!.
Standards:ASTM,JIS,GB,EN(DIN,BS,NF) Or Per as clients' requires.
Product Basic Information
1.Chemical Composition and Mechanical Properties(In Quenched & Tempered State):
|
Chemical Composition |
Mechanical Properties(In Quenched & Tempered State) |
||
|
C |
0.95-1.05 |
Tensile strength(MPA) |
--- |
|
Si |
0.45-0.75 |
Yield strength (MPA) |
--- |
|
Mn |
0.95-1.25 |
Elongation(δ5/%) |
--- |
|
Cr |
1.40-1.65 |
Reduction in Area (ψ/%) |
---- |
|
Mo |
≤0.10 |
Impact (J) |
--- |
|
P |
≤0.025 |
Hardness |
Delivery hardness:179-217HB |
|
S |
≤0.025 |
||
|
Ni |
≤0.30 |
||
|
Cu |
≤0.25 |
||
2.Product Application Areas:
Our products have been used in all kinds of areas, such as aviation,aerospace,navigation,nuclear energy,chemical industry,electronic information,achine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments, etc.
3.Similar steel grade & equivalent steel materials:
|
USA |
Japanese |
Gemany |
British |
France |
International |
Chinese |
|
ASTM&AISI&SAE |
JIS |
EN DIN |
EN BS |
EN NF |
ISO |
GB |
|
---- |
---- |
1.3520 |
1.3520 |
1.3520 |
------ |
GCr15SiMn |
Factory Pictures
Certifications
Factory Manufacture Process
Product photos
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Packing & Shipping
FAQ
Q: Why choose 100CrMnSi6-4 over standard GCr15 (52100) for bearings?
A: Because it has higher manganese and silicon. This gives 100CrMnSi6-4 much better hardenability, meaning it can achieve uniform hardness in thicker cross-sections. It is the preferred choice for large bearings and heavy machinery where GCr15 would have a soft core.
Q: Do you supply this bearing steel in the spheroidize-annealed condition?
A: Yes. The base material is produced at our in-house base and supplied spheroidize-annealed with a hardness of 179-217 HB. This structure is essential for cold forming and machining, giving you a uniform microstructure for the final quenching.
Q: How do you control carbide segregation in GCr15SiMn bars?
A: We strictly control the rolling and cooling processes at our production base to prevent carbide network formation. We can provide metallurgical reports confirming the carbide uniformity rating to ensure it meets your bearing fatigue life standards.
Q: What is the difference between cold-drawn and hot-rolled tolerances for this steel?
A: Cold-drawn bars offer tighter tolerances (like h11) and a smoother surface, reducing your machining time. Hot-rolled bars are cheaper but have a black surface and wider tolerances. We stock both to match your specific machining allowances.
Q: Can you provide UT (Ultrasonic Testing) for large bearing steel bars?
A: Yes. For large diameter bars used in wind power or heavy equipment, we arrange 100% ultrasonic testing through our qualified third-party partners to detect internal inclusions or cracks before shipment.
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