
GE Additive
Hot Isostatic Pressing
Recommended* Hot Isostatic Pressing (HIP) Conditions for Common Additive Manufactured Materials
GE Additive |
Industry |
HIP Temp (°C)** |
HIP Temp (°F)** |
HIP Press. (MPa)** |
HIP Press. (ksi)** |
HIP time (hr.)** |
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Aluminum |
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CL 35AL | F357 | 538 | 1000 | 100 | 14.5 | 8 (minimum) | |||||
CL 36AL | A205 | 514 +/- 8 | 975 +/- 15 | 100 | 14.5 | 11 +/- 0.5 | |||||
CL 36AL | A205 | 454 +/- 14 | 850 +/- 25 | 100 | 14.5 | 4 +/- 0.5 | |||||
Cobalt |
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CL 110CO | F75 CoCrMo | 1204 | 2200 | 100 | 14.5 | 4 | |||||
Arcam ASTMF75 CoCr | F75 CoCrMo | 1200 | 2192 | 100 | 14.5 | 4 | |||||
CL 111CO | Alloy 188 | 1121 | 2050 | 100 | 14.5 | 4 | |||||
Iron |
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CL 25MS | M152 | 1149 | 2100 | 100 | 14.5 | 5 | |||||
Nickel |
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CL 100NB | Alloy 718 |
1163 |
2125 | 100 | 14.5 | 4 | |||||
1038 | 1900 | 100 | 14.5 | 4 | |||||||
Titanium |
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CL 41 TI ELI | Ti-6Al-4V | 899 | 1650 | 100 | 14.5 | 3 | |||||
Ti-6Al-4V | Ti-6Al-4V | 920 | 1688 | 100 | 14.5 | 2 | |||||
Ti-6Al-4V ELI | Ti-6Al-4V ELI | 920 | 1688 | 100 | 14.5 | 2 | |||||
Grade 2 | Grade 2 Ti | 920 | 1688 | 100 | 14.5 | 2 |
* Recommendations based on investigation of Laser Cusing and/or Electron Beam EBM deposited materials
** Standard tolerances except where listed on temperature and time are as follows: +/- 14C◦ (+/-25F◦), +/-1hr. Pressure is considered minimum.
Hot Isostatic Pressing (HIP)
The hot isostatic pressing process combines high temperature (up to 2200ºC) and isostatic inert gas pressure (from to 100 to 3100 bar) in a high pressure containment vessel. Heat and pressure, applied simultaneously, eliminate internal voids and residual porosity therefore improving fatigue resistance of fabricated parts while retaining a very fine grained additive structure.
Advantages
- Increases material properties such as resistance to stress and cracking by elimination of internal voids.
- Improves uniformity of additive materials and increases quality and repeatability of performance.