A nickel-copper grade, Alloy 400 combines high strength and corrosion resistance.
Superb corrosion resistance in a wide range of media including seawater, hydroflouric acid, fluorine, sulphuric acid and alkalis.
| % | C | Si | Mn | S | Fe | Ni | Cu |
|---|---|---|---|---|---|---|---|
| Min | 0 | 0 | 0 | 0 | 0 | 63 | 28 |
| Max | 0.3 | 0.5 | 2 | 0.024 | 2.5 | 70 | 34 |
Alloy 400 from NeoNickel has superb corrosion resistance, particularly in neutral and alkaline salts. It is also one of a limited number of alloys that can be used in conjunction with hydrofluoric acid and fluorine. With high nickel content, this alloy is immune to chloride-induced stress corrosion cracking. The alloy also has good mechanical properties from sub-zero temperatures up to 549°C.
This alloy also performs excellently in seawater, with improved resistance to cavitation corrosion compared with other copper-base alloys. It’s often used to handle sulphuric acid up to 80% concentration at room temperature and up to 15% sulphuric acid at boiling temperatures.
Check out our Technical Resource: Burst Pressure Tables using Alloy 400 Seamless Tube.
| Mechanical & Physical Properties | -180°C | -130°C | -70°C | 21.1°C | 93.3°C | 204.4°C | 315.6 | 371.1°C | 426.7°C | 537.8°C | 648.9°C | 982°C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength /MPa | - | - | - | 450 | 420 | 390 | 380 | 370 | 370 | - | - | - |
| 0.2% Yield Strength /MPa | - | - | - | 175 | 150 | 135 | 130 | 130 | 130 | - | - | - |
| Reduction of area % | - | - | - | - | - | - | - | - | - | - | - | - |
| Elongation % | - | - | - | 51 | 44 | 43 | 47 | - | 48 | 38 | - | - |
| Coefficient of Thermal Expansion /µm/m°C | 11.1 | 11.4 | 12.1 | - | 14.2 | 15.2 | 15.7 | 16.1 | - | 16.3 | 16.6 | 18.1 |
| Thermal Conductivity /kcal/(hr.m.°C) | 14.19 | 15.65 | 17.03 | 18.92 | 20.64 | 23.13 | 25.89 | 28.72 | - | 31.39 | 33.88 | - |
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