Stainless Steel Grade Compositions for Austenitic Stainless

Grade

UNS No.

Typical Composition (%)

Description and Applications

C

Mn

Cr

Mo

Ni

others

301

S30100

0.10

1

17

 

7

 

Primarily for deep drawn components and high strength springs and roll-formed panelling.

302HQ

S30430

0.03

0.6

18

 

9

Cu 3.5

Wire for severe cold heading applications such as cross-recess screws.

303

S30300

0.06

1.8

18

 

9

S 0.3

Free machining grade for high speed repetition machining. Also available as "Ugima" 303 improved machinability bar for even higher machinability.

304

S30400

0.05

1.5

18.5

 

9

 

Standard austenitic grade - excellent fabrication characteristics with good corrosion resistance. Also available as "Ugima" 304 improved machinability bar.

304L

S30403

0.02

1.5

18.5

 

9

 

Low carbon version of 304 gives resistance to intergranular corrosion for heavy section welding and high temperature applications.

308L

S30803

0.02

1

19.5

 

10.5

 

Filler wire for welding 304 and similar grades.

309

S30900

0.05

1.5

23

 

13.5

 

Good corrosion resistance and good resistance to attack by hot sulphur compounds in oxidising gases. Filler for welding dissimilar metals.

310

S31000

0.08

1.5

25

 

20

 

Good resistance to oxidation and carburising atmospheres in temperatures 850-1100°C.

316

S31600

0.05

1

17

2

11

 

Higher resistance than 304 to many media, particularly those containing chlorides. Also available as "Ugima" 316 improved machinability bar.

316L

S31603

0.02

1

17

2

11

 

Low carbon version of 316 gives resistance to intergranular corrosion for heavy section welding and high temperature applications.

321

S32100

0.04

1

18

 

9

Ti 0.5

Titanium stabilised grade resists intergranular corrosion during exposure at 425-850°C. High strength in this temperature range.

347

S34700

0.04

1

18

 

9

Nb 0.7

Niobium stabilised grade resists intergranular corrosion as for 321, but more commonly used as a filler for welding 321.

904L

N08904

0.02

1

20

4.5

24

Cu 1.5

Super austenitic grade with very high corrosion resistance, particularly to sulphuric acid and warm chlorides.

2111HTR

S30815

0.08

0.6

21

 

11

N 0.16
Ce 0.06

Excellent scaling and creep resistance at temperatures up to 1150°C.

 

Source: Atlas Steels Australia

 

For more information on this source please visit Atlas Steels Australia

 

Date Added: Jan 2, 2002 | Updated: Mar 27, 2013
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