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Grade Introduction:
SAE 52100 bearing steel is a high-quality Alloy Bearing steel, It
belongs to high carbon, chromium-containing low alloy steel. SAE 52100
Oil Quenched & Tempered Hardness is 28-34 HRC. SAE 52100 steel
Annealing delivery hardness less than 250HB. SAE 52100 Alloy bearing
steel properties is a chromium, manganese alloy steel specification.
SAE 52100 is equivalent to DIN 100Cr6, GB GCr15 steel. Most
applications can replace each other.
Grade Application:
SAE 52100 steel is widely used for a variety of applications in the
used to the bearings in rotating machinery. Typical applications such
as valve bodies, pumps, and fittings, the high load of a wheel, bolts,
double-headed bolts, gears, internal combustion engine. Electric
locomotives, machine tools, tractors, steel rolling equipment, boring
machine, railway vehicle, and mining machinery transmission shaft on
the steel ball, roller and shaft sleeve, etc.
Equivalent grades:
Country |
USA |
German |
Japan |
British |
Standard |
ASTM A295 |
DIN 17230 |
JIS G4805 |
BS 970 |
Grades |
52100 |
100Cr6/1.3505 |
SUJ2 |
535A99/EN31 |
Addition to other grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B,
EN43B, EN47, EN353, IS2062, 42Crmo4, OHNS, HCHCR, D2, D3, H-11, H-13,
CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM
SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5,
20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8,
C55MN75, S40C, S355J2G3.
Our Supply Range:
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Chemical composition:
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 |
– |
– |
Mechanical Properties:
Quantity |
Value |
Unit |
Young’s modulus |
200000 – 20000 |
MPa |
Tensile strength |
650 – 880 |
MPa |
Elongation |
8 – 25 |
% |
Fatigue |
275 – 275 |
MPa |
Yield strength |
350 – 350 |
MPa |
Hardness:
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 |
Heat Treatment:
SAE 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.
Hardening:
SAE 52100 alloy steel is hardened by cold working, or heating and
quenching. It can be carburized at 913°C (1675°F) followed by
quenching. It is again heated at 788°C (1450°F) followed by quenching
for the second time.
Tempering:
Temper to desired hardness as indicated by tempering curves after
water or oil quench.
Physical Properties
Properties |
Metric |
Imperial |
Density |
7.81 g/cm3 |
0.282 lb/in³ |
Melting point |
1424°C |
2595°F |
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 |
Forging Properties:
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.
Stress Relieving:
Heat it up to 600-700℃, stay the temperature, furnace cooling. The
need for the hardness of mold steel is 187-229HBS. The characters
remove the work hardening and residual stress.
Normalizing:
Heat it until the temperature at the range of 930-950℃, maintain the
temperature, air cooling. The hardness needs to be 302-388HBS.
Annealing:
AISI 52100 alloy steel is annealed at 872°C (1600°F) followed by
slowly cooling to reduce cold working or machining stress
Density:
Properties |
Metric |
Imperial |
Density |
7.81 g/cm3 |
0.282 lb/in³ |
Machinability:
SAE 52100 alloy steel can be machined using conventional techniques.
The machinability of this steel can be improved by performing
sherardizing annealing process at 649°C (1200°F) before machining.
Welding:
This is a high carbon alloy typically used in bearing applications
where welding is not applicable or appropriate.
Supply Cities:
Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai,
Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi,
Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka,
Puducherry, Kerala, Tamil Nadu, Telangana, Salem, Thanjavur, Trichy,
Erode, Vellore, Ranipet, Sivakasi, Karur, Hosur, Nagercoil,
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Thiruvannamalai, Pollachi, Rajapalayam, Gudiyatham, Pudukottai,
Vaniyambadi, Ambur, Nagapattinam, Trivandrum, Vijayawada, Guntur,
Thirupathi, Nazarathpet, Kakinada, Kurnool, Kadapa, Nizamabad,
Mahabubnagar, Karimnagar.