303 Stainless Steel

303 1.4305
Technical Data

A sulphur bearing austenitic free machining stainless. It offers excellent corrosion resistance with improved machineability to the more popular 304 grade.

Typical Analysis

C.

Mn.

P.

S.

Si.

Cr.

Ni.

0.15%

2.00%

0.05%

0.15%

1.00%

17.00-

8.00-

max.

max.

max.

min.

max.

19.00%

10.00%

Physical Properties

Temperature

20ºC

200ºC

400ºC

800ºC

Modulus of elasticity
20000

18500

17000

13500

kg/mm

Specific heat
0.105

0.125

0.135

0.15

kcal/ºC

Specific electrical resistance
0.7

0.8

1.0

1.15

(resistivity)

Mean value for:

20-100ºC

20-200ºC

20-400ºC

20-800ºC

Coefficient of Thermal Expansion
17

17.5

18

19.5

x10-6 per ºC

Density g/cm3 at 20ºC
7.9

Scaling temperature ºC
875ºC

topics

174PH
FV520B
F51
F55
440C
440B
420
410
416
431
1-2083
310
316
304
303
321

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