MECHANICAL COMPOSITION ( IN PERCENTAGE )

Grade

Tensile
Strength Mpa, (Min)

Yield
Strength 
Mpa, (Min)

%Age
Elongation
in 50mm
gauge length min

Hardness (Max)

Why We Use

BHN

Rb

301

515

205

40

217

95

High work-hardening rate; used for structural applications, railcars, and automotive trims.

304

515

205

40

201

92

Most common stainless steel; excellent corrosion resistance; used in kitchenware, tanks, etc.

304L

485

170

40

201

92

Low carbon for better weldability; used in welded structures, food processing equipment.

310S

515

205

40

217

95

Heat-resistant alloy; used in furnace parts, heat exchangers, and high-temp environments.

316

515

205

40

217

95

Better corrosion resistance due to molybdenum; ideal for marine & chemical applications.

316L

485

170

40

217

95

Low carbon version for welding; used in pharmaceutical, chemical, and marine industries.

317

515

205

35

217

95

Higher molybdenum for improved pitting resistance; used in paper and pulp industries.

317L

515

205

40

217

95

Low carbon version of 317; offers high corrosion resistance and weldability for chemical plants.

321

515

205

40

217

95

Stabilized with titanium; resists intergranular corrosion; used in aerospace and exhaust systems.

347

515

205

40

201

92

Stabilized with niobium; ideal for high-temperature environments and welded components.

409

380

170

20

179

88

Low-cost ferritic grade; mainly used in automotive exhaust systems.

409M

430

275

20

187

90

Modified 409 grade with improved strength; also used in automotive exhaust.

410S

415

205

22

183

89

Martensitic stainless steel with good corrosion resistance; used in cutlery and valves.

410

450

205

20

217

89

General-purpose martensitic stainless steel; used in knives, tools, and medical instruments.

420

700( max )

-

15

217

95

High hardness and wear resistance; commonly used in cutlery and surgical instruments.

430

450

205

22

183

89

Ferritic stainless steel; good corrosion resistance and formability for automotive trims, appliances.

JSL AUS

515

205

40

217

95

High-quality Australian grade; used for corrosion-resistant applications and structural parts.

JS- 203

515

205

40

217

95

Popular grade with balanced strength and corrosion resistance; suitable for general fabrication.

301M

515

205

40

217

95

High strength and excellent ductility; used in automotive and aerospace components.