Parameter of forge steel cylpebs:
Nominal diameter * nominal length | 20×25 | 25×35 | 30×40 | 30×45 | 35×45 | 45×50 | 50×60 |
Allowable deviation of diameter | ±2 | ±2 | ±2 | ±3 | ±3 | ||
Length allowable deviation | ±1.5 | ±2.5 | ±3 | ±3.5 | ±3.5 | ||
Steel section of the above specifications, surface hardness: HRC:60-65 degrees, central hardness: HRC:60-65 degrees
name | Chemical composition (mass fraction) | |||||||
C | Si | Mn | Cr | Mo | Cu | P | S | |
Medium carbon alloy steel section | 0.45-0.65 | 0.3-1.9 | 0.5-1.5 | ≤1.0 | ≤0.2 | ≤0.20 | ≤0.030 | ≤0.030 |
High carbon alloy steel section | 0.7-0.95 | 0.2-0.75 | 0.5~1.0 | 0.05~0.8 | ≤0.2 | ≤0.20 | ≤0.030 | ≤0.030 |
