Precipitation hardened nickel-copper alloy, K500 exhibits outstanding corrosion resistance.
With the addition of titanium and aluminium, Alloy K500 can be heat treated to give higher strength. The alloy has similar corrosion resistance to Alloy 400 in a wide range of media including seawater, hydrofluoric acid, sulphuric acid and alkalis.
| % | C | Mn | Si | S | Ni | Cu | Ti | Al | Fe |
|---|---|---|---|---|---|---|---|---|---|
| Min | 0 | 0 | 0 | 0 | 63 | 27 | 0.35 | 2.3 | 0 |
| Max | 0.25 | 1.5 | 0.5 | 0.01 | 70 | 33 | 0.85 | 3.15 | 2 |
Alloy K500 has outstanding corrosion resistance in a variety of environments and is currently employed in marine, oil and gas and chemical environments. The alloy has excellent mechanical properties ranging from sub-zero temperatures up to around 480°C. Alloy K500 demonstrates excellent corrosion resistance in many environments including pure water to non-oxidising mineral acids, salts and alkalis.
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| Mechanical & Physical Properties | -200°C | -157°C | -130°C | -70°C | 21.1°C | 100°C | 204.4°C | 315.6°C | 400°C | 537.8°C | 648.9°C |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength /MPa | - | - | - | - | 1100 | 1040 | 1020 | 980 | 890 | 750 | 620 |
| 0.2% Yield Strength /MPa | - | - | - | - | 690 | 670 | 640 | 620 | 600 | 570 | 490 |
| Reduction of area % | - | - | - | - | - | - | - | - | - | - | - |
| Elongation % | - | - | - | - | 24 | - | - | - | - | - | - |
| Charpy Impact V-notch /J | - | - | - | - | 68 | - | - | - | - | - | - |
| Coefficient of Thermal Expansion /µm/m°C | 11.2 | 11.7 | 12.2 | 13 | 13 | 13.7 | 14.6 | 14.9 | 15.3 | 15.7 | 16.4 |
| Thermal Conductivity /kcal/(hr.m.°C) | - | 10.6 | 11.3 | 12.64 | 14.79 | 16.68 | 19.09 | 21.84 | 24.25 | 27 | 29.41 |
| Modulus of Elasticity / GPa | - | - | - | - | 179 | - | - | - | - | - | - |
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