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Material Supplied by

Columbia Metals

S32550 / AMAZON 256 Duplex Stainless Steel

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Description

AMAZON 256 is a super duplex stainless steel widely used in critical offshore, petrochemical and chemical plant applications. It is based on a 26% chromium and 6% nickel composition. The grade has very good pitting and crevice corrosion resistance resulting from a controlled addition of copper, as well as excellent ductility and impact strength at both ambient and sub-zero temperatures, combined with a high resistance to abrasion, erosion and cavitation erosion. These features make it particularly suitable for use in seawater and other chloride-containing environments.

Primary standard name

Equivalent standard names

Properties

Electrical

Electrical resistivity ρel

8.0E-7 Ω·m at 20 °C

General

Density ρ

7.8 g/cm³ at 20 °C

Mechanical

Elastic modulus E

199 GPa at 20 °C

Elongation A

25 % at 20 °C

Hardness, Brinell HB

280 [-] at 20 °C

Poisson's ratio ν

0.32 [-] at 20 °C

Tensile strength Rm

760 MPa at 20 °C

Yield strength YS

550 MPa at 20 °C

Thermal

Coefficient of thermal expansion α

1.1E-5 1/K at 20 °C

Specific heat capacity cp

425 J/(kg·K) at 20 °C

Thermal conductivity λ

1.4E-5 W/(m·K) at 20 °C

Chemical properties

Element

Weight %

Comment

Fe

-

REM

Cr

24 - 27 %

Ni

4.5 - 6.5 %

Mo

2.9 - 3.9 %

Cu

1.5 - 2.5 %

More

This material data has been provided by Columbia Metals.

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.