ThePipingMart Blog Grades C710 Copper (C71000) – Composition, Properties, and Uses

C710 Copper (C71000) – Composition, Properties, and Uses

Copper C710

Copper C710 is a copper alloy that combines nickel and silicon in a solid solution. It is often used for its high strength and corrosion resistance, making it ideal for many applications. In this post, we’ll take a closer look at the properties and uses of this versatile copper alloy.

C710 Copper Composition

Copper C710 has a chemical composition of 0.7% Ni, 0.1% Si, and 99.2% Cu (by weight). This combination gives it superior strength while providing good electrical conductivity and corrosion resistance.

Nominal Minimum Maximum
Copper (incl. Silver) 79 Remainder Remainder
Lead .05
Iron 1.0
Zinc 1.0
Nickel 21 19.0 23.0
Manganese 1.0

C710 Copper Mechanical Properties

Copper C710 has excellent mechanical properties, including a high tensile strength (up to 710 MPa) and yield strength (up to 590 MPa). Additionally, its fatigue limit is 250 Mpa, and its hardness is 90 BHN for cold-worked material and 95 BHN for hot-worked material.

Size Section in. Temper Tensile Strength ksi Yield Strength Elongation in 2” % Rockwell Hardness Shear Strength ksi Fatigue Strength
(.5% Ext. Under Load) ksi (.2% Offset) ksi F B 30T ksi Million Cycles
Flat Products
0.040 in. .050 mm 51.0 13.0 13.0 35 72 25
.035mm 52.0 14.0 14.0 35 73 27
.025mm 53.0 16.0 16.0 35 75 30
Quarter Hard 60.0 48.0 49.0 20 92 58
Half Hard 68.0 62.0 63.0 8 100 75
Hard 75.0 71.0 72.0 5 80
Extra Hard 78.0 75.0 76.0 4 82
Spring 82.0 78.0 79.0 3 84
Extra Spring 85.0 78.0 79.0 3 86
1.0 in. OD .025mm 49.0 18.0 40 72
x .065 in. Light Drawn 68.0 62.0 14 76 20.0 100
.080 in. Extra Spring 95.0 85.0 5

C710 Copper Chemical Properties

Copper C710 has unique chemical properties, making it a preferred choice in many industrial applications. These properties include low thermal and electrical conductivity, low coefficient of thermal expansion, excellent corrosion resistance, strength/weight ratio, nonmagnetic behavior, and excellent formability. Despite being used in many harsh environments due to its robustness, Copper C710 is chemically very stable, offering exceptional resistance against oxidation and mechanical erosion. It is an environmentally safe choice because it has no hazardous by-products like other metals such as nickel or cobalt. It also does not leech any dangerous chemicals into its surrounding environment when exposed to extreme temperatures or pressure changes over time. Copper C710’s chemical properties make it an extremely popular option for consumer products such as cookware and even space exploration equipment due to its durability and chemical stability.

C710 Copper Physical Properties

Copper C710 has many physical properties, making it an ideal choice for many applications. Its specific gravity is 8.9 g/cm3, its melting point ranges from 1033-1060°C, and its thermal conductivity is around 180 W/mK at room temperature. It also has excellent thermal shock and wear resistance due to its high strength, making it suitable for parts exposed to wear or heat cycling over long periods.

English Units C.G.S. Units
Melting Point (Liquidus) 2190°F 1200°C
Melting Point (Solidus) 2100°F 1150°C
Density .323 lb./cu. in. @ 68°F 8.94 gm./cu. cm @ 20°C
Specific Gravity 8.94 8.94
Coefficient of Thermal Expansion per °F from 68°F to 212°F per °C from 20°C to 100°C
Coefficient of Thermal Expansion per °F from 68°F to 392°F per °C from 20°C to 200°C
Coefficient of Thermal Expansion .0000091 per °F from 68°F to 572°F .0000164 per °C from 20°C to 300°C
Thermal Conductivity 21 Btu./sq. ft./ft./hr./°F @ 68°F .09 cal/sq. cm/cm/seC/°C @ 20°C
Electrical Resistivity (Annealed) 160 Ohms (circ. mil./ft.) @ 68°F 26.6 Microhm-cm @ 20°C
Electrical Conductivity* (Annealed) 6.5% IACS @ 68°F .038 Megohm-cm @ 20°C
Thermal Capacity (Specific Heat) .09 Btu./lb./°F @ 68°F .09 cal./gm./°C @ 20°C
Modulus of Elasticity (Tension) 20,000 ksi 14,100 Kg./sq. mm
Modulus of Rigidity 7,500 ksi 5,275 Kg./sq. mm

C710 Copper Uses

Because of its excellent mechanical properties, corrosion resistance, heat resistance, and machinability, Copper C710 can be used in a variety of applications such as valves, pumps, bearings, pipe fittings & flanges etc., as well as in aircraft engine components like turbine blades & vanes where high levels of heat & pressure are present. Due to its excellent corrosion resistance, it can also be used in marine engineering or shipbuilding when exposed to salt water or other corrosive environments. In addition to these applications, it can also be used for welding work due to its good weldability when properly preheated before welding operations begin.

Corrosion Resistance

Copper C710 is a copper alloy with excellent corrosion resistance and is often used for structural applications such as frames, columns, mesh, and more. The unique combination of copper and zinc creates a low-friction, wear-resistant surface resistant to chemical damage and oxidation. Copper C710 also offers outstanding electrical conductivity, making it ideal for electrical conduits and armoured cable applications. Its amazing corrosion resistance allows it to be used in corrosive environments where other materials wouldn’t stand a chance. All this makes Copper C710 an incredibly versatile metal that can handle almost any industrial project you can throw at it.

Heat Resistance

Copper C710 is a highly versatile copper alloy with excellent heat resistance properties. Its melting point -of 94°C makes it one of the most reliable materials for applications requiring higher temperatures. In addition to the high melting point, its remarkable ability to handle prolonged heating and cooling cycles without deforming or weakening makes it ideal for engineering and construction projects that must operate in extreme heat conditions. With superior heat resistance characteristics and durability, Copper C710 is an unbeatable choice for a cost-effective material with long-term reliability benefits.

Heat Treatment

Copper C710 is an alloy commonly used in the heat treatment of industrial products and components. It provides a high level of resistance to corrosion and wear, making it one of the most popular choices for heat treatment applications. Through quenching, softening, hardening and tempering techniques, Copper C710 can be easily manipulated to achieve the desired properties for whatever product it uses. This versatility makes it a go-to option for many manufacturers in heat treatment.


Copper C710 machining is used to manufacture highly precise products, from medical devices to components, for use in experimental physics labs. By using powerful and precise machines such as CNC lathes, skilled personnel can quickly and accurately create components made from copper C710 that can be used in various applications. To ensure quality control over the finished product, machinists often go through several comprehensive tests, which include dimensional accuracy measurements and inspection of grain structure. When done correctly, copper C710 machining offers dependable component construction and meets increasingly stricter demands in the industry.


Copper C710 is an excellent choice for welding, as it provides strong joints capable of withstanding high heat and vibration. It is widely used because it resists corrosion in sea water, seawater piping systems, and fuel tanks. Copper C710 has a low melting point making it ideal for joining metals with dissimilar thermal expansion coefficients. Its neat and orderly grain structure helps ensure a uniform weld. Furthermore, its strength and ductility are second to none, making it the preferred material by many welders due to its ability to hold up under pressure.


Copper C710 is an incredibly versatile copper alloy with many beneficial properties like high mechanical strength, corrosion resistance, heat resistance, and machinability. It is suitable for various industries, from aerospace engineering to shipbuilding. By understanding the composition, physical, mechanical, and practical application properties associated with copper c 710, one can make informed decisions on how best to utilize this unique copper alloy. Therefore, it’s essential to understand the specifics associated with copper c 710 before selecting it for any project or application.

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