AISI 446

Stainless steels are known as high-alloy steels. They have excellent corrosion resistance in comparison with other steels as they contain more chromium.
Based on their crystalline structure, stainless steels are divided into three groups, namely, martensitic, austenitic and ferritic steels. A combination of martensitic and ferritic steels forms a fourth group known as precipitation-hardened steels.
The grade 446 stainless steel is a ferritic, non-heat treatable stainless steel that provides good resistance to high temperature oxidation and corrosion. The following datasheet provides more details of grade 446 stainless steel.

Chemical Composition

Element	Content(%)
Iron, Fe	73
Chromium, Cr	23.0 - 27.0
Manganese, Mn	1.50
Silicon, Si	1.0
Nickel, Ni	0.25
Carbon, C	0.20
Phosphorous, P	0.040
Sulfur, S	0.030

Mechanical Properties

Properties	Metric	Imperial
Tensile strength	550 MPa	79800 psi
Yield strength (@strain 0.200%)	345 MPa	50000 psi
Elastic modulus	200 GPa	29000 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation at break	20%	20%
Hardness, Brinell (estimated from Rockwell B)	159	159
Hardness, Knoop (estimated from Rockwell B)	173	173
Hardness, Rockwell A (estimated from Rockwell B)	51.1	51.1
Hardness, Rockwell B	83	83
Hardness, Vickers (estimated from Rockwell B)	159	159

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 446 Equivalent Grade / Specifications

AISI 446

ASTM A176

ASTM A268

ASTM A276

ASTM A314

ASTM A473

ASTM A511

ASTM A815

DIN 1.4762

QQ S763

QQ S766

ASME SA268

ASTM A580

FED QQ-S-763

FED QQ-S-766

MIL SPEC MIL-S-862

SAE J405 (51446)

AISI 446 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.