ThePipingMart Blog Grades Copper Casting Alloy (UNS C84200) – Composition, Properties and Uses

Copper Casting Alloy (UNS C84200) – Composition, Properties and Uses

Copper Casting Alloy UNS C84200

Copper-casting alloys are used in various industries due to their excellent properties. One such alloy is Copper casting alloy UNS C84200. This blog post will discuss its composition, mechanical properties, physical properties and uses.

C84200 Composition

The alloy is composed primarily of Copper (91%) along with tin (6%), lead (2.5%), zinc (0.3%) and nickel (0.2%). It also contains trace amounts of bismuth, iron and phosphorus, which give the alloy specific characteristics for certain applications.

Element Content (%)
Cu 91
Sn 5
Pb 2.5
Zn 12.5

C84200 Mechanical Properties

The tensile strength of this metal is 58-74 ksi, while the hardness ranges from 50-60 Brinell. It has good flexibility and can easily work with traditional machining processes like drilling or tapping. Its yield strength is 40 ksi, with an elongation of 20%.

Properties Metric Imperial
Hardness, Brinell (500 kg) 60 60
Tensile strength (as cast) 193 MPa 28000 psi
Yield strength (as cast) 103 MPa 14900 psi
Elongation at break (as cast) 27.00% 27.00%
Machinability (UNS C36000 (free-cutting brass) = 100) 80 80
Elastic modulus 117 GPa 16969 ksi
Poisson’s ratio 0.34 0.34

C84200 Physical Properties

This alloy has a density of 0.323 lb/in3, making it lightweight but still strong enough for many applications. Its melting point ranges between 1537°F – 1650°F depending on the exact composition and heat treatment used during manufacturing. It has an electrical conductivity rating of 25% IACS, making it highly conductive compared to other metals such as aluminium or steel alloys.

Properties Metric Imperial
Density 8.70 g/cc 0.314 lb/in³

UNS C84200 Equivalent

  • ASTM B30.
  • ASTM B505.
  • QQ C390.


Because it offers a combination of strength, corrosion resistance and electrical conductivity, this metal is often used in producing electrical components like transformers or switchgear parts in water piping systems. Additionally, its temperature-resistant properties make it great for use in high-temperature environments like furnaces or kilns where other materials may not be able to withstand the heat without degrading quickly over time.


If you’re looking for a versatile metal that combines strength, corrosion resistance and electrical conductivity, then copper casting alloy UNS C84200 could be just what you need! With its excellent mechanical and physical properties, this alloy is perfect for applications where these qualities are required – from electrical components to water piping systems – making it a great choice for any project you may have! Whether you’re an experienced engineer working on new designs or just starting your first project, copper-casting alloy UNS C84200 could be the material you’re looking for!

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