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C71640 CuNi (66/30/2/2) Seamless Copper Nickel Tube
C71640 copper-nickel is a copper-nickel alloy formulated for primary forming into wrought products. It has a moderately high base cost and a moderately high embodied energy among wrought copper-nickels.
Standard: ASTM B111, B466
Chemical Composition & Mechanical Properties
| Steel Grade | Cu | Sn | Al | As | Ni | Fe | Mn | Pb | Zn |
| C70400 | Remain | - | - | - | 4.8-6.2 | 1.3-1.7 | 0.3-0.8 | 0.05 max | 1.0 max |
| C70600 | Remain | - | - | - | 9.0-11.0 | 1.0-1.8 | 1.0 max | 0.05 max | 1.0 max |
| C71500 | Remain | - | - | - | 29.0-33.0 | 0.4-1.0 | 1.0 max | 0.05 max | 1.0 max |
| C71640 | Remain | - | - | - | 29.0-32.0 | 1.7-2.3 | 1.5-2.5 | 0.05 max | 1.0 max |
| Steel Grade | Temper | Tensile Strength Mpa | Yeild Strength Mpa | Elongation % | Expansion Requirement % | Grain Size mm | ||
| Min | Min | Max | Min | Min | Min | Max | ||
| C70400 | 061 | 260 | 85 | - | - | 30 | 0.01 | 0.045 |
| H55 | 275 | 205 | - | - | 20 | - | - | |
| C70600 | 061 | 275 | 105 | - | - | 30 | 0.01 | 0.045 |
| H55 | 310 | 240 | - | - | 20 | - | - | |
| C71500 | 061 | 360 | 125 | - | - | 30 | 0.01 | 0.045 |
| HR50A | 495 | 345 | - | 12 | 20 | - | - | |
| HR50B | 495 | 345 | - | 15 | 20 | - | - | |
| C71640 | 061 | 435 | 170 | - | - | 30 | 0.01 | 0.045 |
| HR50 | 560 | 400 | - | - | 20 | - | - | |
Application:
Chillers
Heat Condensers & Exchangers
Power Plants
Refineries
Desalination Plants
Ship Building & Ship Repairs
Defence
Mark: As required.
