gcr15 round steel
gcr15 steel plate
gcr15 steel pipe
suj2 round steel
100cr6 round steel
100cr6 steel plate
52100 round steel
1.3505 Round steel
GCr15 bearing steel is a kind of high carbon chromium bearing steel with less alloy content, good performance and the most widely used. After quenching and tempering, it has high and uniform hardness, good wear resistance and high contact fatigue performance. The cold working plasticity of the steel is medium, the cutting performance is general, the welding performance is poor, the sensitivity to the formation of white spots is large, there is temper brittleness.
Implementation standards:
China GB/T18254-2002
Japanese JIS G4805:1991
ASTM A295:1998
Unified digital code :B00150
Chemical composition
S: ≤0.020
P: 0.027 or less
Cr: 1.30 to 1.65
Heat treatment
Steel bar annealing, steel wire annealing or oil quenching at 830-840 degrees.
Process parameter
1. Ordinary annealing: 790-810 degrees heating, furnace cooling to 650 degrees, air cooling -- HB170-2 GCr15 bearing steel
2. Isothermal annealing: 790-810 degrees heating, 710-720 degrees isothermal, air cooling -- HB207-229
3. Normalizing: 900-920 degrees heating, air cooling -- HB270-390
4. High temperature tempering: 650-700 degrees heating, air cooling -- HB229-285
5. Quenching: 860 degrees heating, oil quenching - HRC62-66
6. Low temperature tempering: 150-170 degrees tempering, air cooling - HRC61-66
7. Carbonitriding: 820-830 degrees of co-infiltration for 1.5-3 hours, oil quenching, -60 degrees to -70 degrees of cryogenic treatment +150 degrees to +160 tempering, air cooling -- HRC≈67
.3505 52100 100cr6 suj2 Features and Uses
The representative steel of high carbon chromium bearing steel has good comprehensive mechanical properties, high hardenability, high and uniform hardness after quenching and tempering, good wear resistance and high contact fatigue life, hot processing deformation performance and machinability are good, but poor weldability, more sensitive to white spot form, and tempering brittleness tendency.
It is used to manufacture various bearing rings with wall thickness of 12mm and outer diameter of 250mm, and also used as rolling bodies with wide size range, such as steel balls, tapered rollers, needle rollers, etc. It is also used to manufacture molds, precision measuring tools, and other machine parts that require high wear resistance, high elastic limits, and high contact fatigue strength.
This standard applies to hot rolled or forged round steel, wire rod, cold drawn (rolled) round steel (straight bar or disc) and steel pipe for making bearing sleeves and rolling elements of high carbon chromium bearing steel. Continuous casting steel is not recommended for ball steel.
Other varieties and specifications of steel and billets may also be supplied through negotiation between the supply and demand parties, and the specific requirements shall be indicated in the contract.
High carbon chromium bearing steel like table
China China Taiwan Japan Korea United States International Standards Organization Germany France Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST SKF BS EN/BS
GCr15 B00150 SUJ2 SUJ2 STB2 E52100 G52986 100Cr6
(B1) 100Cr6
(W3) 1.3505 100Cr6
(100C6) Щ X15 SKF3 535A99
2 Approximate table alloy cold working tool steel
China Japan America Germany France European standard Russia Sweden UK
GB JIS ASTM DIN EN/DIN NF EN/NF EN Digital grade GOST SS BS EN/BS
Cr2
GCr15 SUJ2 52100 100Cr6 100Cr6
100Cr6RR 102Cr6 1.2067 KH
ShKh15 2258 534A99
535A99
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