This standard specifies the gas nitriding process, equipment, inspection, energy consumption and safety and health requirements for steel parts heated in an ammonia-containing atmosphere. This standard applies to gas nitriding of carbon steel, alloy structural steel, stainless steel and heat-resistant steel.
GB/T 18177-2008 Referenced Document
GB 15735 Requirements for the safety and health in production process of metal heat treatment*, 2012-11-05 Update