Copper Nickel 70-30 tubes – 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 service, which require a longer copper life.
UNS No. | C71500 – BSI No. CN107 – ISO Name CuNi30Mn1Fe |
Chemical Comp. (%) | Cu rem / Ni 29 ~ 33 / Pb 0.05 / Fe 0.40 ~ 1 / Zn 1 max |
ASTM Spec. | B 111, B 359, B395, B 466, B 467, B 543, B 552 |
ASME Spec. | SB 111, SB 395, SB 466 |
Applications | Condenser, Evaporator and Heat Exchanger tubes; Distiller tubing; Salt Water piping. |
Temper | O61 Annealed / HR50 Drawn & Stress Relieved |
Properties * | Metric | English |
Density | 8.94 g/cc | 0.323 lb/in³ |
Tensile Strength min.- O61 -/- HR50 | 360 MPa -/- 495 MPa | 52 ksi -/- 72 ksi |
Yield Strength min.- O61 -/- HR50 | 125 MPa -/- 345 MPa | 18 ksi -/- 50 ksi |
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 |
* The information provided in this page includes typical values “only” for general reference and information. It is not intended for specification, design or engineering purposes.