HARDIALL® - AMS 4597 - CuNi15Sn8 - C72900

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Hardiall® is a wrought spinodally hardened copper alloy CuNi15Sn8 (C72900) designed for high strength applications where toughness is required. It is non-magnetic and resists mechanical wear, galling, stress relaxation, corrosion and erosion. It is easily machined into complex components whilst being environmentally friendly being both lead and beryllium free.

Hardiall® is used within the aerospace, oil & gas and other industries thanks to its outstanding physical and mechanical properties in many varied components. Lebronze alloys has developed a full range of Hardiall® products to match it’s customers’ stringent needs. Lebronze Alloys manufacturing process for Hardiall® is fully integrated: internal processes include casting, hot and cold working stage, heat treatment and non-destructive testing. Being fully integrated ensures reactivity and complete traceability.

Equivalent Materials

This material data has been provided by Lebronze Alloys.

"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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23.0 °C

8.95 g/cm³

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Elastic modulus

23.0 °C

128 - 144 GPa

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23.0 °C

3 - 6 %

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Hardness, Brinell

23.0 °C

314 [-]

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Hardness, Rockwell C

23.0 °C

34 - 35 [-]

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Hardness, Vickers

23.0 °C

320 [-]

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Tensile strength

23.0 °C

1075 - 1137 MPa

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Yield strength

23.0 °C

1020 - 1069 MPa

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Coefficient of thermal expansion

23.0 °C

1.64E-5 1/K

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for 20-200°C

Thermal conductivity

23.0 °C

38 W/(m·K)

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for 20-200°C



Electrical conductivity

23.0 °C

5.00E+6 S/m

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Relative magnetic permeability

23.0 °C

1 [-]

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Technological properties

Application areas

Hardiall® can be an alternative to Beryllium Copper for some applications. It is environment friendly, being Beryllium-free, Lead-free, and recyclable. Aerospace: friction bushings and bearings. In landing gears, bushings and bearings are required to operate under severe conditions, they need to be lubricated and replaced frequently causing recurring maintenance downtimes. To reduce maintenance costs, Hardiall® is used for such applications as it demonstrates excellent lubricity, wear, and galling resistance. Oil & Gas: couplings for onshore production systems e.g. sucker rods. Hardiall is also used in onshore oil pumps as sucker rod and valve rod guide bushing couplings. In such applications where stainless steel is generally used, Hardiall® demonstrates excellent resistance to metal-to-metal wear. Mining: bushings and bearings. In Mining equipment, bushings and bearings are highly solicited components. They need to be lubricated and replaced frequently implying recurrent production downtimes and maintenance man hours. Hardiall® is used in excavators, mining trucks and longwall shearers.

Corrosion properties

Corrosion resistance rating: 5 out of 5


Friction behavior rating: 5 out of 5

General machinability

Machinability: 65 %

Processing history

Condition: TS