ThePipingMart Blog Grades Copper C101 (UNS C11000) – Composition, Properties, & Uses

Copper C101 (UNS C11000) – Composition, Properties, & Uses

Copper C101

What is Copper C101?

Copper C101 is an alloy of copper, tin, and zinc. It is also known as “malleable” or “free-cutting” copper due to its high mechanical properties, allowing easy machining. In this blog post, we will discuss the physical, chemical, mechanical, and corrosion resistance properties of Cu UNS C11000 and its heat treatment and applications.

What Forms is Monel 400 Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Flanges
  • Fasteners

Copper C101 Chemical Composition

Cu C101 is highly resistant to corrosion in seawater environments and has good resistance to acetic and sulfuric acids. Zinc in the alloy gives it higher resistance to atmospheric oxidation than other copper alloys such as brass or bronze.

% C101
Others (Total) 0.0-0.10
Copper (Cu) Balance

Cu C101 Physical Properties

C101 Copper has a density of 8.89 g/cm3 and a melting point of 1083°C (1981°F). Cu C101 is an extremely malleable metal that can be formed into various shapes without losing strength. It also has excellent thermal and electrical conductivity, making it ideal for many different applications.

Property Value
Density 8.92 g/cm3
Melting Point 1083 °C
Modulus of Elasticity 117 GPa
Electrical Resistivity 0.171 x 10-6 Ω.m
Thermal Conductivity 391.1 W/m.K
Thermal Expansion 16.9 x 10-6/K

Cu UNS C11000 Mechanical Properties

Copper C11000 has excellent mechanical properties such as high tensile strength, yield strength, flexibility, elongation at breakage, fatigue strength, shear modulus, and modulus of elasticity. These make it suitable for engineering components that withstand high loads or stress over time.

Grade C101
Tensile Strength (MPa) 200-360
Proof Stress (MPa) 50-340
Elongation A50 mm 50-5%
Hardness Vickers 40-110 HV

Copper C101 Equivalent

CW004A C101 C11000 Cu-ETP

Copper C101 Specifications

  • ASTM B1, B2, B8, B48, B272, B298, F68
  • AMS 4700
  • Federal QQ-W-343

Copper UNS C11000 Uses

C11000 Copper is used extensively in engineering components due to its excellent physical and mechanical properties. It is commonly used in automotive parts such as engine components or transmission housings; electrical components such as circuit boards; plumbing systems; heat exchangers; valves; bearings; fasteners; screws; tanks; pipes; fittings, wires, and cables, etc., due to its excellent thermal conductivity and electrical conductivity properties.

Corrosion Resistance

Zinc in the alloy makes it highly corrosion-resistant in most environments, including saline water. It does not corrode easily, even when exposed to air or moist conditions for long periods. This makes it particularly suitable for outdoor use where exposure to weathering could lead to corrosion issues with other metals like aluminum or steel.

Heat Treatment

Heat treatment can improve the hardness and tensile strength of C11000 Copper by increasing its yield strength by up to 40%. This makes it suitable for applications with high loads or stress over time, such as engine components or fasteners used in construction projects.


In conclusion, Copper C101 has great physical, chemical, mechanical & corrosion resistance, making it ideal for many applications. Heat treatment can further improve the hardness & tensile strength, making it suitable for more demanding applications. With that said, Copper C11000 is one versatile material with many uses ranging from automotive parts, electrical components, plumbing systems & much more. When looking for a strong material with good wear & tear resistance, look no further than Copper 101!

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