Description
Haynes 214
HAYNES® 214® alloy (UNS N07214) is a nickel – chromium-aluminum-iron alloy, designed to provide the optimum in high-temperature oxidation resistance for a wrought austenitic material, while at the same time allowing for conventional forming and joining. Intended principally for use at temperatures of 1750°F (955°C) and above, 214® alloy exhibits resistance to oxidation that far exceeds virtually all conventional heat-resistant wrought alloys at these temperatures. This is attributable to the formation of a tightly adherent Al2 O3 -type protective oxide scale, which forms in preference to chromium oxide scales at these high temperatures. At temperatures below 1750°F (955°C), 214® alloy develops an oxide scale which is a mixture of chromium and aluminum oxides. This mixed scale is somewhat less protective, but still affords 214® alloy oxidation resistance equal to the best nickel-base alloys. The higher temperature Al2 O3 – type scale which 214® alloy forms also provides the alloy with excellent resistance to carburization, nitriding and corrosion in chlorine-bearing oxidizing environments.
%Chemical Composition
| Mo | Mn | Co | Fe | Al | Cr | Ni |
| (max) 0.5 | (max) 0.5 | (max) 2 | 3 | 4.5 | 16 | Balance |
| B | C | Zr | Si | Nb | W | Ti |
| (max) 0.01 | 0.04 | (max) 0.1 | (max) 0.2 | (max) 0.15 | (max) 0.5 | (max) 0.5 |
Density & Melting Point
| Melting Point (Celsius) | Density |
| 1400 | (g/cm) 8.05 |
Hardness
| Average Hardness (HRBW) | Form |
| 100 | Plate |
| 94 | Bar |
| 98 | Sheet |
DM unit
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