AISI 420F

Stainless steels are high-alloy steels that have good corrosion resistance in comparison with other steels because they contain more chromium.
According to their crystalline structure, stainless steels are divided into martensitic, austenitic and ferritic steels. A combination of martensitic and ferritic steels forms a fourth group known as precipitation-hardened steels.
Grade 420F stainless steel is a general purpose free machining version of 420 stainless. It is a heat treatable chromium steel. The following datasheet provides more details of grade 420F stainless steel.

Chemical Composition

Element	Content(%)
Iron, Fe	84
Chromium, Cr	13
Manganese, Mn	1.0
Silicon, Si	1.0
Molybdenum, Mo	0.60
Carbon, C	0.15
Sulfur, S	0.15
Phosphorous, P	0.040

Mechanical Properties

Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength (@strain 0.200%)	380 MPa	55100 psi
Elastic modulus	190-210 GPa	27557– 30458 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	22%	22%
Hardness, Brinell	220	220
Hardness, Rockwell C (converted from Brinell hardness, value below normal Rockwell C hardness range, for comparison only)	18	18

Sheets / Plates

Production Route	Hot Rolled, Cold Rolled
Material Standard	AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry
Size	Width from 100mm to 3000mm ; Length from 500mm to 12000mm
Thickness	0.1mm to 400mm
Delivery Condition	As Rolled, Annealed, Quenched and Tempered, Normalized
Surface Finish	Plain, Brushed, Cladded

AISI 420F Equivalent Grade / Specifications

AISI 420F

AMS 5620

ASTM A895

SAE 51420F

SAE J405 (51420F)

AISI 420F Applications

1) Structures in Buildings, bridges, railway stations.

2) Fabrication of pipeline components & Industrial equipment.

3) Construction of automotive bodies, warehouses, shipping containers.

4) Commercial appliances, etc.