Product Name: Bearing Steel
Model: GCr15A
Standard: YB 9-1968
● Features and application:
GCr15 steel through electroslag remelting is a special precision bearing steel. High purity, high density, uniformity and good carbide, fatigue performance is better than ordinary GCr15 bearing steel. Products suitable for manufacture of military bearing, special bearing, aircraft engine bearings, precision instruments, precision spindle bearings.
● Chemical Composition:
Carbon C: 0.95 ~ 1.05
Si Si: 0.15 ~ 0.35
Manganese Mn: 0.20 ~ 0.40
Sulfur S: ≤ 0.020
Phosphorus P: ≤ 0.027
Chromium Cr: 1.30 ~ 1.60
Ni-Ni: ≤ 0.30
Copper Cu: ≤ 0.25
● Mechanical Properties:
Tensile strength σb (MPa): 1902
Impact energy Akv (J): 26
Hardness: 63HRC
Sample size: a sample
● Heat treatment and microstructure specifications:
Heat treatment specifications: 850 ~ 860 ℃ quenching oil cooling; 160 ℃ tempering 2h.
Microstructure: martensite