Product Details

DIN 17230 Material 100Cr6 Chrome Bearing Seamless Steel Tube
Place of Origin Shandong, China
Certification ISO
Thickness 5, 20
Application Transmission Parts
Surface Treatment bright
Technique Cold Drawn
Standard
Alloy Or Not Is Alloy
Grade
Outer Diameter 35 - 280 mm
Secondary Or Not Non-secondary
Special Pipe Bearing Steel Tube
Section Shape Round

Product Features

Product Description

 

1. Relevant Steel Specification of 100Cr6 Bearing Steel

CountryUSAGermanJapanBritish
StandardASTM A295DIN 17230JIS G4805BS 970
Grades52100100Cr6/1.3505SUJ2535A99/EN31

2. Chemical Composition of 100Cr6 Bearing Steel and Equivalents

StandardGradeCMnPSSiNiCrCuMo
ASTM A295521000.93-1.050.25-0.450.0250.0150.15-0.350.251.35-1.600.300.10
DIN 17230100Cr6/1.35050.90-1.050.25-0.450.0300.0250.15-0.350.301.35-1.650.30–
JIS G4805SUJ20.95-1.100.500.0250.0250.15-0.35–1.30-1.60––
BS 970535A99/EN310.95-1.100.40-0.70––0.10-0.35–1.20-1.60––

3. Mechanical Properties of DIN 100Cr6 Bearing Steel

PropertiesMetricImperial
Bulk modulus (typical for steel)140 GPa20300 ksi
Shear modulus (typical for steel)80 GPa11600 ksi
Elastic modulus190-210 GPa27557-30458 ksi
Poisson’s ratio0.27-0.300.27-0.30
Hardness, Brinell––
Hardness, Knoop (converted from Rockwell C hardness)875875
Hardness, Rockwell C (quenched in oil from 150°C tempered)6262
Hardness, Rockwell C (quenched in water from 150°C tempered)6464
Hardness, Rockwell C (quenched in oil)6464
Hardness, Rockwell C (quenched in water)6666
Hardness, Vickers (converted from Rockwell C hardness)848848
Machinability (spheroidized annealed and cold drawn. Based on 100 machinability for AISI 1212 steel)4040
  • 100Cr6 Steel Physical Properties
PropertiesMetricImperial
Density7.81 g/cm30.282 lb/in³
Melting point1424°C2595°F
  • DIN 100Cr6 Alloy Steel Thermal Properties
PropertiesMetricImperial
Thermal expansion co-efficient (@ 23-280°C/73.4- 36°F, annealed)11.9 µm/m°C6.61 µin/in°F
Thermal conductivity (typical steel)46.6 W/mK323 BTU in/hr.ft².°F

4. Forging of DIN 100Cr6 Bearing Steel

DIN 100Cr6 alloy steel is forged at 927 to 1205°C, and should not be forged below 925ºC. A post-forge equalization treatment is recommended at 745ºC for 4-6 hours followed by air cooling for SAE/AISI 52100 steel.

5. Heat Treatment for DIN 100Cr6 Bearing Steel

 DIN 100Cr6 alloy bearing steel is heated at 816°C followed by quenching in oil. Before performing this process, it is subjected to normalizing heat treatment at 872°C followed by slowly cooling in order to reduce the machining stress.

Hot Working

DIN 100Cr6 bearing steels alloy can be hot worked at 205 to 538°C.

Cold Working

DIN 100Cr6  bearing steel can be cold worked using conventional techniques in the annealed or normalized conditions.

Annealing

For spheroidize anneale, the following isothermal anneal is recommended:

Quenching

DIN 100Cr6 alloy bearing steel could be hardened by quenching in water from 801-829 degree or quench in oil from 816-842 degree.

Tempering

Temper to desired hardness as indicated by tempering curves after water or oil quench.

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