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Material Chrome ASTM A295 Grade 52100 Seamless Bearing Steel Tube / Pipe

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USD $1,200 - $1,256 / Ton

10 Tons(Min.Order)

Supply Ability 8000 Tonne / Tonnes per Month
Port shanghai/tianjin/qingdao
Payment Terms:T/T Credit Card

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Product Details

Brand Name:	LCKC	Place of Origin:	Shandong, China	Model Number:	52100 / GCr15 / SUJ2 / 100Cr6
Shape:	Bar	Application:	Transmission Parts	Standard:	ASTM
Grade:	52100	Dimensions:	Thickness:0.08-6.0mm

Product Description

1.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

2. 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	–	–

3. Mechanical Properties of ASTM A295 52100 Bearing Steel

Properties	Metric	Imperial
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Hardness, Brinell	–	–
Hardness, Knoop (converted from Rockwell C hardness)	875	875
Hardness, Rockwell C (quenched in oil from 150°C tempered)	62	62
Hardness, Rockwell C (quenched in water from 150°C tempered)	64	64
Hardness, Rockwell C (quenched in oil)	64	64
Hardness, Rockwell C (quenched in water)	66	66
Hardness, Vickers (converted from Rockwell C hardness)	848	848
Machinability (spheroidized annealed and cold drawn. Based on 100 machinability for AISI 1212 steel)	40	40

52100 Steel Physical Properties

Properties	Metric	Imperial
Density	7.81 g/cm3	0.282 lb/in³
Melting point	1424°C	2595°F

52100 Alloy Steel Thermal Properties

Properties	Metric	Imperial
Thermal expansion co-efficient (@ 23-280°C/73.4- 36°F, annealed)	11.9 µm/m°C	6.61 µin/in°F
Thermal conductivity (typical steel)	46.6 W/mK	323 BTU in/hr.ft².°F

4. Forging of A295 52100 Bearing Steel

AISI 52100 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 ASTM 52100 Bearing Steel

ASTM/AISI 52100 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

AISI 52100 bearing steels alloy can be hot worked at 205 to 538°C.

Cold Working

AISI 52100 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:

1500ºF (815ºC) for 3 hours
1350ºF (735ºC) for 4 hours
1250ºF (675ºC) for 3 hours
Slow cool to 1000ºF (540ºC) then air cool.

Quenching

AISI 52100 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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Material Chrome ASTM A295 Grade 52100 Seamless Bearing Steel Tube / Pipe

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