Aisi 420 Stainless Steel Heat Treatment

Heat treatment of aisi 420 grade martensitic stainless steel a.

Aisi 420 stainless steel heat treatment.

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. It is magnetic in both the annealed and hardened conditions. Currently our sponsor s heat treating process for the 420 stainless steel product is listed below. Maximum corrosion resistance is attained only in the fully hardened or fully hardened and stress relieved condition.

Type 420 stainless steel heat treatment annealing. Heating to austenitizing temperature 980 1065 c 1800 1950 f. Annealing for astm aisi 420 wrought stainless steel. Parts are heated to 1 8500f and held for 1 hour.

All parts cleaned in a solvent bath to remove all traces of oil prior to heat treatment. 0preheat part to 1 450 f and hold for 45 minutes. 2h13 does not show resistance to chlorine salts and intergranular corrosion. 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.

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. Hardening for 420 grade stainless steel. Part placed into a vacuum furnace. Applications potential ak steel type 420 is a martensitic stainless steel that provides corrosion resistance similar to type 410 plus increased strength and hardness.

Subcritical annealing recommended temperature for aisi. Like any other stainless steel aisi 420 can also be hardened through heat treatment. Process anneal grade 420 can be annealed at 735 to 785 c and air cooled.