Haynes® 214®
Ideal for high temperature, oxygen rich environments including turbo-machinery components found in rocket engines.
Material & Process Capability
Haynes® 214® alloy (UNS N07214) is a nickel-chromium-aluminum-iron alloy, developed to provide the optimum in high-temperature oxidation resistance, while at the same time allowing for conventional forming and joining.
Intended principally for use at temperatures of 1750 °F (955 °C) and above, Haynes 214 alloy exhibits resistance to oxidation that exceeds many conventional heat-resistant alloys at these temperatures. This is attributable to the formation of a tightly adherent Al2O3-type protective oxide scale. This oxide scale also makes Haynes 214 ideal for use in high temperature oxygen environments found in some rocket engines in the pre-burner and main combustion sections.
General Process
This data sheet specifies the expected mechanical properties and characteristics of this alloy when manufactured on a Velo3D Sapphire System. All data is based on parts built with Velo3D standard 50 μm layer thickness parameters, using Praxair TruForm 214-N51, a Velo3D approved powder.
| Density, g/cc (lbs/cubic inch) | 8.05 (0.291) |
| Relative Density, percent | 99.9+ |
| Surface Finish1, Sa, μm (μin) | <15 (590) |
Mechanical Properties at Room Temperature
| After Heat Treatment3 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Property2 | Ultimate Tensile Strength, MPa (ksi) | Yield (0.2% Offset), MPa (ksi) | Elongation At Break, percent | |||||
| Process Recipe | TBR (cc/h)4 | Sample Size | Mean | Min | Mean | Min | Mean | Min |
| 310W/50 μm | 18 | 305 | 960 (139) | 955 (139) | 646 (94) | 640 (93) | 37.5 | 35 |
| 500W/50 μm | 30 | 345 | 985 (143) | 975 (141) | 687 (100) | 680 (99) | 35.8 | 34 |
| 1. For angles >25° from horizontal, actual finish depends on orientation and process selected. 2. Mechanical & test samples printed in vertical orientation, machined to ASTM E8 (round specimen #3). 3. HIP at 1163 °C ± 12 °C (2125 °F ± 22 °F) for 180 min, 15ksi (±1ksi). Heat treat per AMS 2774: heat at 316 °C /h (600 °F /h) to 538 °C ± 28 °C (1000 °F ± 50 °F), hold for 15-30 min, heat at 482 °C/h (900 °F /h) to 1093 °C ± 14 °C (2000 °F ± 25 °F) for 30 +5/-0 min, argon quench at 0.9 bar or greater. 4. TBR: Theoretical Build Rate (TBR) is a per-laser build rate calculated from the process conditions of bulk core as scan speed x hatch spacing x layer thickness. This value represents a single laser only and is reported for comparison purposes across different materials and recipes, but does not correspond to true build rate, which is dependent on geometry and system characteristics (i.e. number of lasers, recoat times, etc.) 5. Data collected from single Sapphire printer. | ||||||||
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