$29.00
Ni21 is a pre-alloyed gas atomized nickel based powder which is used primarily for the local repair of cast iron glass forming molds, neck rings and blow heads, as well as for hardfacing the corners and seams of molds. It can be used in applications similar to Colmonoy 224, 225 and 226. It has excellent weld characteristics and is a good color match.
It is typically deposited as a machinable, non-magnetic powder weld or spray-fuse (SF) deposited overlay. The fusing temperature is 880 – 940°C (1615 – 1725°F). It is easily finished by hand filing.
Equivalent: Deloro 21, Colmonoy 224, 225, 226
Manufacture: Gas Atomization
Its wear resistance is mainly due to the presence of hard boride and silicide phases, and it retains its properties up to about 315°C (600°F). Because of its low melting point it is easily fused to form a smooth hard-wearing surface.
| Ni | Cr | B | Si | C | Fe | Others | Hardness | Density | Melting Range |
| Bal. | 3 | 0.8 | 2.1 | < 0.05 | < 0.5 | P 2.3 | 19 – 23 HRC | 8.58 g/cm3 | 880 – 1000 ºC |
Ni22 Powder 
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