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1.4404 stainless steel

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Austenitic chromium-nickel-molybdenum stainless steel particularly suitable for welding (1.4404)

Code

X2CrNiMo17-12-2

US standard (AISI)

316L

Composition

Alloying components [%]

C:  0 - 0.03

Cr: 16.50 - 18.50

Mn: 0 - 2.00

Mo: 2.00 - 2.50

N: 0 - 0.10

Ni: 10.00 - 13.00

S:  0 - 0.015 (0.030*)

Si: 0 - 1.00

P:  0 - 0.045

Remainder: Fe

Stainless steel grade

A4

Density [g/cm³]

8.0

Nickel migration

[µg/(cm² x week)] in artificial perspiration (pH 4.5)

<0.05

Yield point

Rp0.2 [N/mm²]

≥200

Tensile strength

Rm [N/mm²]

500 - 700

Corrosion resistance

- Very good

- Similar to 1.4401 but also resistant to intergranular corrosion

Machinability

Medium

Weldability

Very good

Other properties

- Austenitic non-magnetic structure

- Can be mechanically polished to a brilliant sheen

- Suitability for electropolishing: very good

- For use in the temperature range -50 - 550°C

Main uses

General applications involving higher levels of corrosive stress within the following sectors:

- Food industry

- Swimming pool technology

- Oil industry

- Construction industry

- Chemical industry

- Medical engineering

- Aviation

- Offshore equipment

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