Copper Nickel 70/30 tubes – C71500 – has, in general, the best resistance of any of the copper alloys to impingement attack and to corrosion from most acids and waters. It is being used in severe corrosive conditions in which service lives longer than those of other copper alloys are desired.It’s wided applied for condenser, evaporator and heat Exchanger tubes; distiller tubing; salt water system etc.

Conform to ASEM SB 111, SB 395, SB 466 with delivery condition O61 Annealed / HR50 Drawn & Stress Relieved

Other related material grades in different standards: EN12451 CuNi30Mn1Fe(CW354H),DIN17664/1785 CuNi30Mn1Fe,BS2871 CN107,JIS H3300 C7150,GB/T8890 BFe30-1-1.

Properties Metric Imperial
Density 8.94 g/cc 0.323 lb/in³
CTE, linear 16.2 10-6/°C @ 20.0 – 300 °C 9.0 10-6/°F @ 70.0 – 570 °F
Specific Heat Capacity 0.09 cal/g-°C @ 20ºC 0.09 BTU/lb-°F @ 70ºF
Thermal Conductivity 29 W/m-K @ 20.0 °C 17 BTU/ft2/ft/h/°F @ 70.0 °F
Melting Point 1171 – 1238 °C 2140 – 2260 °F

Theoretical weight Calculation

Average Wall: (OD-WnxWT x00284- kg/m (all sizes in mm)
Minimum Wall:(OD-WT)x 0.0295-Kg/m (all sizes in mm)

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