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.

Aisi 420 stainless steel heat treatment.

Parts are heated to 1 8500f and held for 1 hour. Heat treatment of aisi 420 grade martensitic stainless steel a. Maximum corrosion resistance is attained only in the fully hardened or fully hardened and stress relieved condition. Annealing for astm aisi 420 wrought stainless steel.

Subcritical annealing recommended temperature for aisi. Type 420 stainless steel heat treatment annealing. 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.

Hardening for 420 grade stainless steel. Part placed into a vacuum furnace. 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.

It is magnetic in both the annealed and hardened conditions. Like any other stainless steel aisi 420 can also be hardened through heat treatment. 0preheat part to 1 450 f and hold for 45 minutes. 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.

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. Aisi 420 high carbon steel is a high carbon steel with a minimum chromium content of 12. Applications potential ak steel type 420 is a martensitic stainless steel that provides corrosion resistance similar to type 410 plus increased strength and hardness.