Copper Alloy (UNS C82510)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties


The unique combination of physical and mechanical properties of copper beryllium casting alloys provides a wide range of metallurgical alternatives that meet specific performance requirements for various applications.

Copper UNS C82510 alloy has peak strength and hardness greater than many steels. Additionally, it offers excellent wear and galling resistance and good electrical conductivity.

The following datasheet discusses the chemical composition and properties of copper UNS C82510.

Chemical Composition

The chemical composition of copper UNS C82510 is given in the following table.

Element Content (%)
Copper, Cu 96.5
Beryllium, Be 1.9-2.15
Cobalt, Co 1-1.2
Carbon, C 0.2-0.35

Physical Properties

The physical properties of UNS C82510 copper alloys are outlined in the following table.

Properties Metric Imperial
Density 8.30 g/cm3 0.3 lb/in3

Mechanical Properties

The mechanical properties of UNS C82510 copper alloy (as cast) are tabulated below.

Properties Metric Imperial
Tensile strength 517-586 MPa 75000-85000 psi
Yield strength 276-345 MPa 40000-50000 psi
Elongation 15-30 % 15-30 %
Modulus of elasticity 131 GPa 19000 ksi
Rockwell B hardness 80-85 80-85

Thermal Properties

The thermal properties of UNS C82510 copper alloys are outlined in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 21-204°C/70-400°F) 18 µm/m°C 10 µin/in°F
Thermal conductivity 96.8 W/mK 672 BTU in/hr.ft2.°F


Copper UNS C82510 finds application in:

  • Plastic molds
  • Non-sparking safety tools
  • Cast parts for military and defense applications
  • Die cast plunger tips.


  1. John Beatty John Beatty United States says:

    Are there differences in hardness before and after hardening? I see that there is an RHB value given but it doesn't indicate if it is before or after hardening? I apologize if my question is elementary as I seek this information for my project in metallurgy class.

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.