825
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We have not this metal on permanent stock. But we can supply it with a longer delivery time, in any needed shape.
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| Carlier designation | NC21FeDU |
| UNS designation | N08825 |
| European numbering designation | 2.4858 |
| AFNOR designation | NiCr21Mo |
| British Standard designation | 3072 (NA16) + 3076 (NA16) |
| Thyssen Krupp VDM designation | Nicrofer 4221 |
| NACE designation | MR0175 |
| Applicable standards | | ASTM B424 | Plates | | ASTM B425 | Bars | | ASTM B564 | Forged pieces |
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Chemical composition
| en % | Ni | Fe | Cr | Mo | Si | Cu | Al | Ti | Mn | C | S | | min | 38,000 | 22,000 | 19,500 | 2,500 | - | 1,500 | - | 0,600 | - | - | - | | max | 46,000 | - | 23,500 | 3,500 | 0,500 | 3,000 | 0,200 | 1,200 | 1,000 | 0,050 | 0,030 |
Density : 8.25
Guarantee mechanical results in MPa
| Standard | Rm | Rp
0.2% | A % | Z | HB | Hrc | Comments | | ASTM B425 - 93 | 586 | 241 | 30 | - | - | - | Hot finished and annealed metal | | ASTM B564 - 97a | 586 | 241 | 30 | - | - | - | Forged and annealed metal |
Forging conditions
Forging is made at a range of temperature included between 1150 and 950°C, then cooled at appropriate conditions for the final thermal treatment and obtain required characteristics. In any case, please contact us.
Properties / Main use conditions
Nickel-Iron-Chromium alloy with addition of molybdenium and copper. Excellent resistance to extreme chemical corrosion (dissolvers), applications with sulfuric or phosphoric acids.
Main applications
Factories making pickling, waste recycling. Heat exchangers and offshore production (petroleum and "acid" gas). Concentrating apparatus of caustic soda, treatments of ores.
Heat treatment
Please, contact us
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