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. Standard Grade ASTM B 111 C71500 EN 12451 CuNi30Mn1Fe (CW354H) DIN 17664/1785 CuNi30Mn1Fe BS 2871 CN107 JIS H3300 C7150 GB/T8890 BFe30-1-1 Cu Bal. Bal. Bal. Bal. Bal. Bal. Pb 0.05 max 0.02 max 0.03 max 0.01 max 0.05 max 0.02 max Fe 0.4-1.0 0.4-1.0 0.4-1.0 0.4-1.0 0.2-1.0 0.5-1.0 Ni 29.0-33.0 30.0-32.0 30.0-32.0 30.0-32.0 29.0-33.0 29.0-32.0 Zn 1.0 max 0.5 max 0.5 max - 0.5 max 0.3 max S - 0.05 max 0.06 max 0.08 max - 0.05 max P - 0.02 max - - - 0.06 max Mn 1.0 max 0.5-1.5 0.5-1.5 0.5-1.5 0.2-1.0 0.5-1.2 C - 0.05 max 0.06 max 0.06 max - 0.05 max Sn - 0.05 max - - - 0.03 max Total impurities - 0.2 max 0.1 max 0.3 max - 0.7 max Condition O61 R370 F37 M O M HR50 R480 - O - Y2 - - - - - - Yield Strength N/mm2 125 min 120 min 120-220 - - - 345 min 300 min - - - - - - - - - - Tensile Strength N/mm2 360 min. 370 min 370 min - 363 min 370 min 495 min. 480 min - - - 490 min - 480 min. - - - - Elongation (%) - 35 min 35 min - 30 min 30 min 12min. (WT<1.21 mm) 12 min - - - 10 min 15 min. (WT>1,21 mm) - - - - - Hardness Hv5 - - - 150 min - - - - - 90-120 - - Typical use This alloy has all the characteristics of CuNi 90/10, but also offers excellent corrosion resistance in high velocity sea water. Also the operating temperature is much higher than of CuNi 90/10. Can assure a long service life and reliability. Melting Point: 1240°C • Hot Working Properties: Good Density (20°C): 8,94 g/cm3 • Cold Working Properties: Good Weight Formula Average Wall: (OD-WT) x WT x 0,0284 = Kg/m (all sizes in mm) Minimum Wall: (OD-WT) x WT x 0,0295 = Kg/m (all sizes in mm)