Cupronickel Tube ASTM B111/ASME SB111

Cupronickel Tube Material: UNS C70400;C70600;C71500;C71640 Standard:ASTM B111/ASME SB111 Size Range:Dia 6-30MM

Strictly implements the standard specification of ASTM B111/ASME SB111      

Cupronickel Tube Material:UNSC70400;C70600;C71500;C71640     

Size Range:Dia 10-80 MM 

Cupronickel or copper-nickel is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. Cupronickel is highly resistant to corrosion in seawater, because its electrode potential is adjusted to be neutral with regard to seawater. Because of this, it is used for piping, heat exchangers and condensers in seawater systems, as well as marine hardware, and sometimes for the propellers, crankshafts and hulls of premium tugboats, fishing boats and other working boats.

By the 1920s, a 70–30 copper-nickel grade was developed for naval condensers. Soon afterwards, a 2% manganese and 2% iron alloy was introduced for a UK power station which needed better erosion resistance because the levels of entrained sand in the seawater. A 90–10 alloy first became available in the 1950s, initially for seawater piping, and is now the more widely used alloy.

 

UNS standard compositions* of wrought alloys (in at%). Maximum or range.
Alloy UNS No.	Common name	European spec	Ni	Fe	Mn	Cu
C70600	90-10	CuNi10Fe	9-11	1-1.8	1	Remainder
C71500	70-30	CuNi30Fe	29–33	0.4–1.0	1	Remainder

Cupronickel Tube ASTM B111/ASME SB111