Sandvik SW 821 is an austenitic copper-nickel alloy (CuNi alloy) for use in arc and flame spray systems. The alloy produces dense, well bonding coatings which are resistant to corrosion.
Sandvik SW 821 is typically used in marine applications and in certain chemical applications.
Forms of Supply
Contact your local Sandvik office for information on forms of supply.
Typical Coating Properties
Properly sprayed the wire produces dense, well bonding coatings for oxidation and corrosion protection.
Chemical composition (nominal), %
Wire Diameter 1.6 mm (0.063 in.) at 20°C (68°F)
|Yield strength, Rp0.2||MPa (ksi)||577 (84)|
|Tensile strength, Rm||MPa (ksi)||626 (91)|
Depending on the surface finish requirements, the coating may be machined by turning or grinding. For rougher surfaces, turning using carbide tools, light cuts and efficient cooling to avoid overheating is recommended. Grinding in fine steps using cooling, light pressure and clean wheels gives a smoother finish.
|Melting point, °C (°F)||1350 (2462)|
|Magnetic Properties||The material is slightly magnetic at room temperature|
|Dimension tolerance mm (in.)||+ 0/-0.05 (0.002)|
Personnel working with thermal spraying should be aware of the hazards connected to the process. They should be familiar with the use of equipment regarding, i.e. eyes, skin, hearing and respiratory protection.
Personnel should be familiar with safety regulations regarding the complete process, including spraying and the spray equipment used. This product contains elements, which in certain combinations may be dangerous for your health. Safety Information Sheets are provided by Sandvik for this product, and should be read and understood before using the material.
Not following these instructions may endanger your health.