Cr14Mo4 Ball Bearing Steel Bar
Cr14Mo4V is a molybdenum containing high-grade steel, but also the world's most widely used in a high-temperature bearing steel, in addition to a general bearing characteristics, but also has high dimensional stability, high temperature hardness, high temperature contact fatigue performance, Long-term use at temperatures below 315 ℃. Mainly used for aeroengine bearings and other high temperature bearings.
Grade: Cr14Mo4V Standard: YB 688-1976
Chemical Composition:
C | Si | Mn | S | P | Cr | Ni | Cu | V | Mo |
0.75~0.85 | ≤0.35 | ≤0.35 | ≤0.020 | ≤0.027 | 3.75 ~ 4.25 | ≤0.20 | ≤0.20 | 0.90 ~ 1.10 | 4.00 ~ 4.50 |
Mechanical Properties:
Impact Power Akv (J): 9.8
Hardness: 65HRC
Heat treatment specifications
Heat treatment specifications: 1110 ± 5 ℃
Insulation 15 ~ 20min, quenching; preheating 860 ℃, tempering 530 ℃ 3 times, each 2h.
Metallography: tempered martensite.
Delivery Status:
Hot-rolled or forged steels are delivered hot-forged or annealed. Cold-drawn steel to the state of annealing delivery.