Alloy 200/201 is extremely resistance to caustic alkalies up to and including the molten state. The extra-low carbon content of Alloy 200/201 gives virtual immunity to intergranular attack above about 315°C. The presence of chlorates must be kept to aminimum, as they accelerate the rate of attack. Good resistance to corrosion in acids and alkalis and is most useful under reducing conditions. Outstanding resistance to caustic alkalis up to and including the molten state. In acid, alkaline and neutral salt solutions the material shows good resistance, but in oxidizing salt solutions severe attack will occur. Resistant to all dry gases at room temperature and in dry chlorine and hydrogen chloride may be used in temperatures up to 550C. Resistance to mineral acids varies according to temperature and concentration and whether the solution is aerated or not. Corrosion resistance is better in de-aerated acid.Manufacture and handling of sodium hydroxide, particularly at temperature above 300C. * Production of viscose rayon. Manufacture of soap. * Analine hydrochloride production and in the chlorination of aliphatic hydrocarbons such as benzene, methane and ethane. * Manufacture of vinyl chloride monomer. * Reactors and vessels in which fluorine is generated and reacted with hydrocarbons. * Processes using caustic alkalines * Food Processing * Synthethic Fiber Production | CHEMICAL COMPOSITION | |||||||
| Alloy | Ni+Co % | Mn % | Fe % | Si % | Cu % | C % | S % |
| Nickel 201 | Min 99.2 | Max 0.35 | Max 0.4 | Max 0.35 | Max 0.25 | Max 0.02 | Max 0.01 |
| Nickel 200 | Min | Max 0.35 | Max 0.4 | Max 0.35 | Max 0.25 | Max 0.15 | Max 0.01 |
|
| 99 | ||||||
| Physical Data | |||||||
| Density | Specific Heat | Electrical Resistivity | Melting Point | Thermal Conductivity | Mean Coeff Thermal Expansion | ||
| 8.89g/cm3 | 0.109(456 J/kg.℃) | 0.096×10-6ohm.m | 1435-1446℃ | 70.2 W/m-K | 13.3×10-6m/m.℃ | ||
| Typical Mechanical Properties | |||||||
| Mechanical Properties | Tensile Strength | Yield Strength | Elongation | Standard | |||
| Nickel 200 | 462 Mpa | 148 Mpa | 47% | ASTM B161/B163/B725/B751 | |||
1. With weldability, high electrical conductivity, suitable linear expansion coefficient
2. Good strength at high temperature, low resistivity
3. High melting point, corrosion resistance, good mechanical properties, in hot and cold state have good pressure workability, easy to degassing, suitable for radio, electric light source, mechanical manufacturing, chemical industry, is an important structural material in vacuum electronic devices.
| Grade | Ni+Co | Cu | Si | Mn | C | Mg | S | P | Fe |
| N4 | 99.8 | 0.015 | 0.03 | 0.002 | 0.01 | 0.01 | 0.001 | 0.001 | 0.04 |
| N6 | 99.6 | 0.10 | 0.10 | 0.05 | 0.10 | 0.10 | 0.005 | 0.002 | 0.10 |
| Ni201 | ≥99.0 | ≤0.25 | ≤0.35 | ≤0.35 | ≤0.02 | / | ≤0.01 | / | ≤0.40 |
| Ni200 | ≥99.2 | ≤0.25 | ≤0.35 | ≤0.35 | ≤0.15 | / | ≤0.01 | / | ≤0.40 |
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