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S31603 stainless steel


S31603 is one of the most commonly used corrosion-resistant stainless steels. Due to the addition of 2 - 2.5% molybdenum, the corrosion resistance of this material is obviously better than S30400/S30403. Because its carbon content is lower than S31600, S31603 also has good processability.

Chemical composition


S31603 Special properties


For low temperature, the maximum temperature can be 550 ° C;

Continuous operation up to 300 ° C intergranular corrosion resistance;

Corrosion resistance

In natural environment medium, medium with medium chlorine and salt concentration and food industry, S31603 has excellent corrosion resistance. Material S31603 is resistant to intergranular corrosion due to its low carbon content. This quality is not resistant to sea water. (PREN = 23.1-28.5)

Mechanical properties of S31603 at 20 ° C

Physical characteristics of S31603 at 20 ° C

S31603 application field

Equipment and vessel manufacturing

Automotive industry

Construction industry

Chemical and petrochemical industry

Decorative use

Food industry


Mechanical engineering


Frequently asked questions

What is the tensile strength of stainless steel S31603?

The tensile strength of stainless steel S31603 is 500 to 700 N/mm ²。

What is the density of stainless steel S31603?

Stainless steel S31603 has a density of 8.0 kg/dm at 20 ° C ³。

What is the hardness of stainless steel S31603?

Hardness of stainless steel S31603 ≤ 215HB.