This website uses cookies to improve service quality. You will find more information about cookies on the privacy policy page.

Austenitic Stainless Steel

200 series

Description

200 Series stainless steels are not new – In fact they have been around for many years. To date they have traditionally not proved very popular outside the USA. However, since they have a much lower Nickel content than 300 Series Austentics, the very high Nickel price over recent years has led to significantly more interest. Equally, stainless steel producers have an ongoing programme of development designed to enhance existing grades and produce new grades. These new grades are sometimes developed for specific end uses and sometimes to improve upon an existing grade.

Related Standards

Equivalent Materials

Properties

General

Density ρ

7.8 g/cm³ at 20 °C

Mechanical

Elastic modulus E

200 GPa at 20 °C

Tensile strength Rm

750 - 950 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

330 - 380 MPa at 20 °C

Thermal

Coefficient of thermal expansion α

1.7E-5 1/K at 20 °C

Thermal conductivity λ

15 W/(m·K) at 20 °C

Chemical properties

Element

Weight %

Comment

C

-

0.15

Fe

-

Balance

Cr

16 - 18 %

Mn

5.5 - 7.5 %

Ni

3.5 - 5.5 %

More

Technological properties

Corrosion properties

Corrosion Resistance @20 C: Similar to 304, better than 430 but susceptible to stress corrosion cracking / intergranular corrosion especially after welding

Welding

Reasonable, although sensitive to intergranular corrosion in the heat affected zone where thckness exceeds 6 mm. Post-weld cleaning and passivation is crucial. 

This material data has been provided by Righton Blackburns.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.