ASTM 52100 Bearing Steel Tubing

ASTM A295 52100 Bearing Steel Tube


ASTM A295 52100 steel tube is a kind of high carbon chromium bearing steel with low alloy content, good performance and most widely used. After quenching and tempering, it has high and uniform hardness, good wear resistance and high contact fatigue performance.The steel has medium cold working plasticity, general cutting performance, poor welding performance, high sensitivity to forming white point, and temper brittleness.


Relevant Steel Specification of ASTM 52100 Bearing Steel

Country USA German Japan British
Standard ASTM A295 DIN 17230 JIS G4805 BS 970
Grades 52100 100Cr6/1.3505 SUJ2 535A99/EN31


Chemical Composition of 52100 Bearing Steel and Equivalents

Standard Grade C Mn P S Si Ni Cr Cu Mo
ASTM A295 52100 0.93-1.05 0.25-0.45 0.025 0.015 0.15-0.35 0.25 1.35-1.60 0.30 0.10
DIN 17230 100Cr6/1.3505 0.90-1.05 0.25-0.45 0.030 0.025 0.15-0.35 0.30 1.35-1.65 0.30
JIS G4805 SUJ2 0.95-1.10 0.50 0.025 0.025 0.15-0.35 1.30-1.60
BS 970 535A99/EN31 0.95-1.10 0.40-0.70 0.10-0.35 1.20-1.60


ASTM 52100 Heat Treatment Process Parameters

A. Ordinary annealing: heating at 790-810 ° C, after furnace cooling to 650 ° C, air cooling - HB170-207 ° C
B. Isothermal annealing: 790-810 ° C heating, 710-720 ° C isothermal, air cooling -- HB207-229
C. Normalizing: 900-920 ° C heating, air cooling -- HB270-390
D. High temperature tempering: heating at 650-700 degrees, air cooling -- HB229-285
E. Quenching fire: 860 degrees of heating, oil quenching -- HRC62-66
F. Low temperature tempering: 150-170 degree tempering, air cooling -- HRC61-66
G. Carbonitrification: 820-830 ° C for 1.5-3 hours, oil quenching, -60 ° C to -70 ° C cryogenic treatment +150 ° C to +160 temper, air cooling -- HRC≈67

ASTM 52100 Properties Introduction

ASTM 52100 has medium cold machining plasticity, general cutting performance, poor welding performance, high sensitivity to white point formation, and temper brittleness.After heat treatment (quenching and tempering at low temperature) has a higher hardness, uniform structure, good wear resistance, high contact fat igue performance.

ASTM 52100 Materials Ordering Attention

As bearing steel, ASTM 52100 requires high smelting quality and requires strict control over the content and distribution of sulfur, phosphorus and non-metallic inclusions.The content and distribution of nonmetallic inclusions have a great influence on the service life of bearing steel.Pay attention to relevant indicators when ordering.

ASTM 52100 Applications

ASTM 52100 is used for the manufacture of various bearing rings and rolling bodies, such as steel balls, rollers and rings for internal combustion engines, electric locomotives, automobiles, tractors, machine tools, rolling mills, drilling machines, mining machinery, general machinery, and high-speed rotating high-load mechanical transmission bearings.In addition to doing ball bearings, rings, and sometimes used to make tools, such as die, measuring tools.

In our province ASTM 52100 steel grade steel pipes are widely used to produce bearings. And our city Liaocheng is China biggest trade center. We can supply the bearing products shall there is any need from you.