Aisi 420 Stainless Steel Heat Treatment

Hardening for 420 grade stainless steel.

Aisi 420 stainless steel heat treatment. Annealing for astm aisi 420 wrought stainless steel. Parts are heated to 1 8500f and held for 1 hour. Aisi 420 high carbon steel is a high carbon steel with a minimum chromium content of 12. Lade mukand ltd mumbai maharastra india thane india martensitic stainless steel aisi 420 grade of diameter 55mm was taken for experiment to study the mechanical and microstructure properties of the steel in hardened and tempered condition.

All parts cleaned in a solvent bath to remove all traces of oil prior to heat treatment. It is magnetic in both the annealed and hardened conditions. Annealing grade 420 stainless steels can be heated at temperatures from 840 to 900 c followed by slow furnace cooling at 600 c and then air cooling. After the quenching and partitioning heat treatment the aisi 420 steel with high amounts of reversed austenite demonstrates a distinctive combination of high ductility and high ultimate tensile strength associated with deformation driven austenite to martensite transformation.

Subcritical annealing recommended temperature for aisi. Maximum corrosion resistance is attained only in the fully hardened or fully hardened and stress relieved condition. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished surface grounded or hardened. Process anneal grade 420 can be annealed at 735 to 785 c and air cooled.

Heating to austenitizing temperature 980 1065 c 1800 1950 f. X20cr13 1 4021 aisi 420 specification and application martensitic stainless steel intended for thermal improvement showing high mechanical properties strength ductility and machinability while maintaining sufficient corrosion resistance. Like any other stainless steel aisi 420 can also be hardened through heat treatment. Currently our sponsor s heat treating process for the 420 stainless steel product is listed below.

Type 420 stainless steel heat treatment annealing. Heat treatment of aisi 420 grade martensitic stainless steel a. 0preheat part to 1 450 f and hold for 45 minutes.