Copper-nickel

CuNi30Mn1Fe

Copper-nickel

UNS C71500 - CW354H

CuNi30Mn1Fe is a copper-nickel alloy containing 30% nickel, also known as 70/30. The addition of iron and manganese improves resistance to erosion and increases mechanical strength without compromising corrosion resistance. It can be used in pressure vessels up to 350 °C and is the material of choice for the most demanding marine applications: seawater piping, hull coatings, and offshore valves.

Properties

Weldability
Cold Deformation
Corrosion Resistance

Development

BIOLOGY STANDARD

States

BIOLOGY STANDARD

Applications

Maritime Industry
Oil Industry
Automotive Industry

Chemical Composition

ElementCu (%)Neither (%)Fe (%)Mn (%)Other (%)
ContentsRemaining30.0–32.00.4–1.00.5–1.5≤0.2

Mechanical Properties

Hardness (HB)≥95
Rm (MPa)≥340
0.2 Rp (MPa)≥120
A%≥30
Density (g/cm³)8.9

Available Sizes

Standards

ASTM B111
ASTM B466
ASTM B151
ASTM B122
ASTM B171
EN 12163
EN 1652

Certificate 3.1 available

Upon request when ordering

* These values are for reference only; they may vary depending on the standard and condition.