Matmatch helps you find, evaluate and source the best materials for your projects.
Search for materials or suppliers

S32550 / AMAZON 256 Duplex Stainless Steel

Supplied by Columbia Metals
Contact supplier
Columbia Metals
View full profile


Equivalent standards

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.


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.

Chemical composition

Element Weight %
Cr 24.0 — 27.0
Ni 4.5 — 6.5
Mo 2.9 — 3.9
Cu 1.5 — 2.5
Mn 0.0 — 1.5
Si 0.0 — 1.0
N 0.1 — 0.25
P 0.0 — 0.04
C 0.0 — 0.04
S 0.0 — 0.03



Electrical resistivity [ ρel ]

8E-7 Ω·m

General information

Density [ ρ ]

7.80 g/cm³


Elastic modulus [ E ]

199.00 GPa

Elongation [ A ]

25.00 %

Hardness, Brinell [ HB ]

280.00 [-]

Poisson's ratio [ ν ]

0.32 [-]

Tensile strength [ Rm ]

760.00 MPa

Yield strength [ YS ]

550.00 MPa


Coefficient of thermal expansion [ α ]

1.11E-5 1/K

Specific heat capacity [ cp ]

425.00 J/(kg·K)

Thermal conductivity [ λ ]

1.4E-5 W/(m·K)

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
This material data has been provided by Columbia Metals.

Download material data

Material data to download as .xlsx and .pdf file.

Similar Materials

These are materials almost identical to the ones you are looking at. They could be a relevant standard or a different supplier.

Go to to find materials similar to S32550 / AMAZON 256 Duplex Stainless Steel.