Physical Properties of Stainless Steel

Mean Coefficient of Thermal Expansion (b)

Thermal Conductivity

Grade or type

UNS No

Density (kg/cm³)

Elastic Modulus (a) GPa

0-100°C µm/m/ °C

0-315°C µm/m/ °C

0-538°C µm/m/ oC

At 100°C W/m.K

At 500°C W/m.K

Specific Heat 0-100°C J/kg.K

Electrical Resistivity nOhms.m

201

S20100

7.93

197

15.7

17.5

18.4

16.2

21.5

500

690

202

S20200

7.93

-

17.5

18.4

19.2

16.2

21.6

500

690

301

S30100

7.93

193

17.0

17.2

18.2

16.2

21.5

500

720

302

S30200

7.93

193

17.2

17.8

18.4

16.2

21.5

500

720

302B

S30215

7.93

193

16.2

18.0

19.4

15.9

21.6

500

720

303

S30300

7.93

193

17.2

17.8

18.4

16.2

21.5

500

720

304

S30400

7.93

193

17.2

17.8

18.4

16.2

21.5

500

720

304L

S30403

7.93

193

17.2

17.8

18.4

16.3

21.5

500

720

302HQ

S30430

7.93

193

17.2

17.8

-

11.2

21.5

500

720

304N

S30451

7.93

196

17.2

17.8

18.4

16.3

21.5

500

720

305

S30500

7.93

193

17.2

17.8

18.4

16.2

21.5

500

720

308

S30800

7.93

193

17.2

17.8

18.4

15.2

21.6

500

720

309

S30900

7.98

200

15.0

16.6

17.2

15.6

18.7

500

780

310

S31000

7.98

200

15.9

16.2

17.0

14.2

18.7

500

780

314

S31400

7.8

200

-

15.1

-

17.5

20.9

500

770

316

S31600

7.98

193

15.9

16.2

17.5

16.2

21.5

500

740

316L

S31603

7.98

193

15.9

16.2

17.5

16.3

21.5

500

740

316N

S31651

7.98

196

15.9

16.2

17.5

14.4

-

500

740

317

S31700

7.98

193

15.9

16.2

17.5

16.2

21.5

500

740

317L

S31703

7.98

200

16.5

-

18.1

14.4

-

500

790

321

S32100

7.93

193

16.6

17.2

18.6

16.1

22.2

500

720

329

S32900

7.8

186

10.1

11.5

-

-

-

460

750

330

N08330

7.93

196

14.4

16.0

16.7

-

-

460

1020

347

S34700

7.98

193

16.6

17.2

18.6

16.1

22.2

500

730

384

S38400

7.93

193

17.2

17.8

18.4

16.2

21.5

500

790

409

S40900

7.75

200

11.7

12.0

12.4

24.9

-

460

-

410

S41000

7.75

200

9.9

11.4

11.6

24.9

28.7

460

570

416

S41600

7.75

200

9.9

11.0

11.6

24.9

28.7

460

570

420

S42000

7.75

200

10.3

10.8

11.7

24.9

-

460

550

430

S43000

7.75

200

10.4

11.0

11.4

26.1

26.3

460

600

430F

S43020

7.75

200

10.4

11.0

11.4

26.1

26.3

460

600

431

S43100

7.75

200

10.2

12.1

-

20.2

-

460

720

434

S43400

7.75

200

10.4

11.0

11.4

-

26.3

460

600

436

S43600

7.75

200

9.3

-

-

23.9

26.0

460

600

440C

S44004

7.75

200

10.2

-

-

24.2

-

460

600

444

S44400

7.75

200

10.0

10.6

11.4

26.8

-

420

620

446

S44600

7.75

200

10.4

10.8

11.2

20.9

24.4

500

670

630

S17400

7.78

196

10.8

11.6

-

18.3

23.0

460

800

631

S17700

7.75

204

11.0

11.6

-

16.4

21.8

460

830

+

N08904

8.00

195

16.0

17.5

-

14.0

-

500

950

+

S30815

7.80

200

16.3

17.3

18.0

14.0

18.0

500

-

+

S31803

7.80

200

13.7

14.7

-

19.0

-

480

850

+

S32304

7.80

200

13.0

-

-

16.0

-

470

850

+

S32750

7.80

200

13.0

14.0

-

17.0

-

470

-

3CR12

S41003

7.75

205

10.8

11.3

12.0

31.0

32.0

480

570

4565S

S34565

7.93

190

14.5

16.3

17.2

14.5

-

510

920

+

S32760

7.80

190

12.8

13.8

-

14.4

-

480

850

(a) 1GPa = 1000MPa
(b) µm/m/°C = x 10-6/°C(c) 1% flow in 10,000 hours at 540°C
Magnetic permiability of all 300 series austenitic steels in the annealed condition is approximately 1.02
+ Proprietary alloy names apply