GB/T 5617-1985
Determination of effective depth of hardening after induction or flame hardening of steel (English Version)
- Standard No.
- GB/T 5617-1985
- Language
- Chinese, Available in English version
- Release Date
- 1985
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2006-01
- Replace By
- GB/T 5617-2005
- Latest
- GB/T 5617-2005
- Scope
- This standard applies to: a. The depth of the hardened layer of induction hardening or flame hardening is greater than 0.3mm. b. After surface quenching, the hardness at three times the effective hardened layer depth (DS) from the surface must be lower than the ultimate hardness (HVHL) minus 100. If this condition cannot be met, it may be stipulated that a higher ultimate hardness value shall be used to determine the effective hardened layer depth after the agreement of the parties concerned.
GB/T 5617-1985 history
- 2005 GB/T 5617-2005 Determination of effective depth of hardening after induction or flame hardening of steel
- 1985 GB/T 5617-1985 Determination of effective depth of hardening after induction or flame hardening of steel
