UNS C14700 Copper Alloy Chemical Properties, Grade, Chart and PDF Online

C14700 copper per ASTM B124 certifies the chemical composition formulated primarily of 99.5% copper with low levels of sulfur and phosphorus as a machinability enhancement. This alloy, famous for its superior machinability and electrical conductivity, is being used across the industry spectrum. The grade table offers detailed specifications, serving as a reference, helping engineers and manufacturers to select suitable grades for individual applications. Copper with the superb machine ability and electrical conductivity finds applications in electrical connectors, switchgear components and bearings due to this. Table of detailed grade gives consistency in quality and performance which in turn make it a preferred one industrial sector.

ASTM B124 C14700 Coppers Chemical Composition And Grade Table

C14700 copper, according to ASTM B-124 requirements, is the alloy composed of 97% copper with about 3% aluminum and nickel. This alloy exhibits improved strength and corrosion resistance compared to copper’s standard grades. The grade table is detailed and comprehensive and gives engineers and manufacturers a handy tool in selecting proper grades for specific applications. C14700 copper finds applications in different industries including electricals, automotive, and aerospace because of its unique qualities. Users may refer to the chemical composition with the grades and specifications in ASTM documentations so that they can be included well in the different industrial processes.

C14700 Copper Composition Table
Elements Cu P S
Min (%) 99.90 0.002 0.20
Max (%) - 0.005 0.50

The Advantages and Disadvantages of ASTM B124 C14700 Copper Material Properties, C14700 Properties


  • Excellent Electrical Conductivity: C14700 copper displays an ultimate merit in electric power transmission and thus is liked by many in areas where swiftness counts in the system.

  • Soft Material: Providing such functions in addition to being able to work with absolute precision without compromising strength makes it a perfect material for various production processes.

  • High Thermal Conductivity: C14700, having comparatively high conductivity, is often used in heat exchangers and radiators as a medium of heat exchange and transportation.

  • Good Corrosion Resistance: Although not fully resistant to the extend environmental awareness for a long time, aluminum alloy composition of C14700 gives its enough resistance to the environment factors.

  • Susceptibility to Oxidation: Because of its intense oxidation reactivity of the C14700 alloy, the problem of oxidation triggered by air or moisture is quite serious compared to other alloys.


  • Costlier Option: The copper without oxygen (OFC), such as C14700, costs differently not only because its pureness is at the highest level but also for the complicated process to manufacture it which is very difficult to match with the conventional copper alloys.

  • Limited Mechanical Strength: Displaying a possessing low hardness, C14700, however, is characterized by insignificant mechanical strength, especially in (places prone to) wear and friction.

  • Unsuitable for High-Stress Environments: The C14700's low tensile strength and substantial load-related performance limitation reduce this material's suitability for main structural elements.

  • Limited Work Hardening Ability: C14700 is unchanged when harden at room temperature, which will not be harded or toughened whatever deformation it has been thought of.

  • Susceptibility to Stress Corrosion Cracking: Contrary to acids, C14700 is acid-resistant but under excessive load, it causes stress corrosion cracking.

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Frequently Asked Questions

What are the chemical properties of the alloy of UNS C14700 copper alloy?

The UNS C14700 deoxidized copper alloy contains copper, aluminum, and nickel in its composition. This allows this alloy to offer the advantages of extreme corrosion resistance and excellent electrical conductivity.

What are the grades of UNS C14700 copper alloy?

UNS C14700 is a copper-nickel-aluminum alloy rated by its solid strength, corrosion resistance, and thermal stability.

In which document I may find a diagram showing properties of UNS C14700?

Websites of reliable materials databases and manufacturer websites have charts that are comprehensive and which detail UNS C14700 features among many others.

Is the copper alloy UNS C14700 available as a PDF?

Sure, there are websites containing PDF documents with all the specification and properties related to the UNS C14700 copper alloy available on the internet nowadays.