304 Stainless Steel

304 / 304L 1.4307
Technical Data

The most common austenitic stainless steel, very widely used in the food, pharmaceutical, breweries and chemical industries. Also very popular in the building and domestic appliance sectors. The 'L' grade has a reduced carbon content. The lower carbon content will help improve corrosion resistance after welding, and minimise carbide precipitation during the welding operation.

Typical Analysis

C.

Mn.

P.

S.

Si.

Cr.

Ni.

0.08%

2.00%

0.045%

0.03%

1.00%

18.00-

8.00-

max.

max.

max.

min.

max.

20.00%

10.50%

304L grade limits carbon to 0.03% and increased nickel to 12%

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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