Grade: 50CrVA

Standard No.: GB / T 1222-1984

50crva Overview

Features and application:
Good mechanical properties and process performance, high hardenability, adding vanadium to steel the grain refinement, reduce heat sensitivity, increased strength and toughness, high fatigue strength, yield ratio is high, but poor welding cold plastic deformation due to the low. Is a relatively high spring, as a large section of the important spring and high-load operating temperature <300 ℃ of the valve spring, piston spring, valve spring.

     General, supply specifications for the 1.5 ~ 10.0MM between, multi-annealed state. State for the hot-rolled coil, the use of annealing to reduce the hardness of the ball in order to create conditions for further processing.

Chemical composition:
Carbon C: 0.46 ~ 0.54

Si Si: 0.17 ~ 0.37

Manganese Mn: 0.50 ~ 0.80

Sulfur S: ≤ 0.030

Phosphorus P: ≤ 0.030

Chromium Cr: 0.80 ~ 1.10

Ni-Ni: ≤ 0.35

Copper Cu: ≤ 0.25

     Vanadium V: 0.10 ~ 0.20