DEF STAN 02-835 Copper Alloy

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Description

DEF STAN 02-835 Copper Alloy is a hot forged, stress relieved high strength cupronickel developed primarily for marine and offshore applications. The alloy contains around 14.5% nickel, 4.5% manganese and smaller additions of aluminium and iron to increase the overall material strength and corrosion resistance. Specified as an MoD (Navy) grade, it combines the inherent corrosion resistance and antibiofouling benefits of traditional cupronickels whilst offering higher strength and toughness levels than the aluminium bronzes. It shows the following features and properties:

High strength

Excellent corrosion and biofouling resistance

High impact strength retained down to cryogenic temperatures

Spark resistance

Related Standards

Equivalent Materials

UNS C72420

This material data has been provided by Matmatch.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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.

Ashby charts

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Properties

General

Property	Temperature	Value
Density	23.0 °C	8.53 g/cm³ Show Material materials with Density of 8.53 g/cm³

Mechanical

Property	Temperature	Value
Charpy impact energy, V-notch	23.0 °C	40 J Show Material materials with Charpy impact energy, V-notch of 40 J
Elongation	23.0 °C	18 - 22 % Show Material materials with Elongation of 18 - 22 %
Tensile strength	23.0 °C	710 - 725 MPa Show Material materials with Tensile strength of 710 - 725 MPa
Yield strength Rp0.2	23.0 °C	400 - 430 MPa Show Material materials with Yield strength Rp0.2 of 400 - 430 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.6E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.6E-5 1/K	for 0-400°C
Melting point		1030 - 1085 °C Show Material materials with Melting point of 1030 - 1085 °C
Thermal conductivity	23.0 °C	25 W/(m·K) Show Material materials with Thermal conductivity of 25 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	23.0 °C	3.5E-7 Ω·m Show Material materials with Electrical resistivity of 3.5E-7 Ω·m

Magnetic

Property	Temperature	Value	Comment
Relative magnetic permeability	23.0 °C	1.01 [-] Show Material materials with Relative magnetic permeability of 1.01 [-]	max.

Chemical properties

Property	Value	Comment
Aluminium	1 - 2 % Show Material materials with Aluminium of 1 - 2 %
Chromium	0.5 % Show Material materials with Chromium of 0.5 %
Copper	Balance
Iron	0.7 - 1.2 % Show Material materials with Iron of 0.7 - 1.2 %
Manganese	3.5 - 5.5 % Show Material materials with Manganese of 3.5 - 5.5 %
Nickel	13.5 - 16.5 % Show Material materials with Nickel of 13.5 - 16.5 %
Other	0.3 % Show Material materials with Other of 0.3 %	max., Inosinic acid (IMP)

Technological properties

Property
Application areas	Offshore & marine: Critical marine fasteners, gears, shafts, pipe couplings, sonar equipment, connectors, flanges and subsea components
Corrosion properties	Excellent corrosion and pitting resistance in marine environments
General machinability	Easily machined