Stainless Steel Grades

Chemical Composition (in%)

Stainless Steel
Grade AISI

 

C
Max.

Si
Max.

Mn
Max.

Cr.

Ni

P
Max.

S
Max.

Other
Elements

202

0.08

1.00

  7.5/10.00

17.00/19.00

4.00/6.00

0.060

0.030

-

301

0.15

1.00

  2.00

16.00/18.00

6.00/8.00

0.45

0.030

-

304

0.08

0.75

 2.00

18.00/20.00

8.00/10.50

0.45

0.030

-

304L

0.03

0.75

 2.00

18.00/20.00

8.00/12.00

0.45

0.030

-

316

0.08

0.75

 2.00

16.00/18.00

10.00/14.00

0.45

0.030

Mo:2.00/3.00

316L

0.03

0.75

 2.00

16.00/18.00

10.00/14.00

0.45

0.030

Mo:2.00/3.00

321

0.08

0.75

 2.00

17.00/19.00

9.00/12.00

0.45

0.030

Ti: 5X%C Min

                 

Mechanical Properties at room temperature

Stainless Steel
Grade AISI

Condition

UTS
N/mm2

0.2% Proof
 stress N/mm2


Elongation

Hardness
RB

202

Annealed

620

310

40

90

301

Annealed

515

205

40

88

304

Annealed

579

290

55

80

304 L

Annealed

558

269

55

80

316

Annealed

579

290

50

79

316L

Annealed

558

290

50

79

321

Annealed

621

241

45

80

409 M

Annealed

450

275

20

90

410 S

Annealed

480

310

22

90

420

Annealed

655

345

15

92

430

 Annealed

517

    345

25

85

Main Characteristics  & Typical Applications

Stainless Steel
Grade AISI

Main
Characteristics

Typical
Application/End products

202

High Cold Work hardening rate, good formability

Water tubings.Watch parts foot rule, industrial  Knives,   bus body accessories, utensils,Kitchen appliances, Kerosene and gas stove parts.

301

Attains high strength by being cold worked,while retaining good ductility.

Used in cold Worked condition for springs & wear plates.

304

 Better Welding characteristics with good formability and general corrosion  resistance.

Watch parts,engine gaskets,flexible hoses, foot rule,door hinges,capillary tubings and sinks.

304L

Low carbon content,Weldable and resistance to sensitisation.Good corrosion and oxidation resistance.

Hypodermic needles and capillary tubings.

316

Superior corrosion resistance to sea water and many chemicals and weldable.

Engine gaskets,flexible hoses,process plant and paper industry equipment.

316 L

Low Carbon content,highly corrosion resistant,weldable and resistant to sensitisation.

Process plant parts particularly in thick sections.

321

Weldable and resistant to sensitisation.Good corrosion and oxidation resistance.

Heater elements,process plant,furnace parts and high temperature tubes.

409M

Good corrosion and oxidation resistance.

Auto mufflars,catalytic converters and trasformer cases.

410S

Weldable and resistance to scaling.Good corrosion and heat resistance.

Turbine blades.fasteners and fishing tackle.

420

Superior wearability excellent,corrosion resistanat and hardnable to 500 BHN.

Surgical instruments,Knife blades and valve parts.

430

Superior corrosion resistance and formable.

Automobile trim and foof processing plants.



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