JB/T 6012.2-2008
Internal combustion engines.Intake and exhaust valves.Part 2: Metallographic inspections (English Version)
- Standard No.
- JB/T 6012.2-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- Professional Standard - Machinery
- Latest
- JB/T 6012.2-2008
- Replace
- JB/T 6720-1993
JB/T 6012.2-2008 Referenced Document
- GB/T 11354 Determination of nitrided case depth and metallographic microstructure examination for steel & iron parts
- GB/T 1299 Tool and mould steels*， 2014-12-05 Update
- GB/T 5617 Determination of effective depth of hardening after induction or flame hardening of steel
- GB/T 6394 Determination of estimating the average grain size of metal*， 2017-02-28 Update
- GB/T 9451 Determination of total or effective thickness of thin surface hardened layers of steel parts
- JB/T 6012 Internal combustion engines - Intake and exhaust valves - Specification
JB/T 6012.2-2008 history
- 2008 JB/T 6012.2-2008 Internal combustion engines.Intake and exhaust valves.Part 2: Metallographic inspections
- 1993 JB/T 6720-1993 Metallographic inspection of intake and exhaust valves of internal combustion engines
JB/T 6012.2-2008 Internal combustion engines.Intake and exhaust valves.Part 2: Metallographic inspections has been changed from JB/T 6720-1993 Metallographic inspection of intake and exhaust valves of internal combustion engines.