Alliage 20
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We propose this metal :
Trading : round bars in all diameters
Forge : rings, blocks, bars, rolls (rough or pre-machined pieces, or machined at your sizes).
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| Carlier designation | N08020 |
| UNS designation | N08020 |
| European numbering designation | 2.4660 |
| AFNOR designation | NiCr20CuMo |
| Thyssen Krupp VDM designation | Nicrofer 3620Nb |
| Applicable standards | | ASTM B462 | Forged pieces | | ASTM B473 | Bars |
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Chemical composition
| en % | Ni | Cu | Cr | Fe | Mo | Mn | S | Si | Nb+Ta | C | P | | min | 32,000 | 3,000 | 19,000 | - | 2,000 | - | - | - | - | - | - | | max | 38,000 | 4,000 | 21,000 | Solde | 3,000 | 2,000 | 0,035 | 1,000 | 8 x C-1 | 0,070 | 0,045 |
Density : 8.18
Guarantee mechanical results in MPa
| Standard | Rm | Rp
0.2% | A % | Z | HB | Hrc | Comments | | ASTM B462 - 97 | 551 | 241 | 30 | 50 | - | - | Forged and annealed metal | | ASTM B473 - 96 | 551 | 241 | 30 | 50 | - | - | Hot or cold finished metal, and annealed |
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
Excellent resistance to stress corrosion cracking and especially to nitric and sulphuric acids.
Main applications
Heat exchangers, pipings and equipments for chemical and petrochemical factories.
Heat treatment
Please, contact us
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