NES 381 PT1 : ISSUE 1 AMD 1
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
FORGING AND HEAT TREATMENT OF MAIN PROPULSION GEARS - CARBURIZED AND HARDENED GEARS
01-04-2000
12-01-2013
States requirements for forging and heat treatment of carburized and hardened main propulsion gears in 3% NiCr case hardening steel for use in HM ships and submarines. The forgings will be required for pinions, and wheels/wheel rims which are assumed to be produced by upsetting or as hollow forgings.
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