ASTM B111 C68700 Copper Brass Tube

Copper Tubes, Copper Alloy Tubes are widely used in applications of air conditioner, refrigeration, heat exchanger, petroleum industry, power station etc. We as one of leading manufacturers in China to provide one stop solution in tubing industry for customers devote to fabricating seamless copper alloy tubes for industrial applications in serious corrosion and special high temperature environments. Types of Copper material are C10100,C44300.C68700.C70600,C71500 etc.


  • UNS C44300 C68700 C70600 C71500 Condenser Brass Tube

C68700 Al-Brass Copper Tube Copper Pipe

Description:

UNS C68700 (aluminum brass)

Grades:

C68700 (CZ110 Aluminium Brass Alloy B),

C71500 (70-30 Copper-Nickel),

C71640 (Copper-Nickel-Iron-Manganese),

C44300(Brass Alloys),

C70600 (90-10 Copper-Nickel).

ASTMB111/ASME SB111

Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

C68700,C10100,C10200,C10800,C12000,C12200,C19200,C44300,C44400,  C44500,C70600,C71500

ASTM B165/ASME SB165

Nickel-Copper Alloy(UNS N04400) Seamless Tube and Pipe

UNS N04400

ASTM B135/ASME SB135

Standard Specification for Seamless Brass Tube

C22000,C23000,C26000,C27200,C28000,C33000,C33200,C37000,C44300

ASTM B88/ASME SB88

Seamless Copper Water Tube

C10200,C12000,C12200

COPPER NICKEL HEAT RESISTANCE

The hot strength of copper increases with only a small addition of nickel. By adding iron,

mechanical properties are improved, not only at room temperature, but also at elevated temperatures.

10% Ni. CuNi10Fe1Mn, for example, can be used in pressure vessel construction up to 300°C,

CuNi30Mn1Fe up to 350°C. Above these limit temperatures, strength drops markedly, particularly the creep strength and creep strain limit.

COPPER NICKEL HEAT TREATMENT

In general, heat treatments are only used with Cu-Ni alloys for soft annealing and stress relieving.

Temperatures for recrystallisation annealing can vary over wide limits between about 620 and 900°C,

depending on degree of cold work, nickel content and additional constituents. High temperatures are

associated with short annealing times (continuous annealing) and low temperatures with long annealing times (static annealing).

Stress-relief annealing is carried out at 280 to 500°C. It is advisable to anneal excluding air or in a slightly reducing atmosphere,

to avoid the pickling that is required with air-containing annealing.

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