Hastelloy C22

Used in corrosive environments with high chloride & high temperature conditions, such as flue-gas scrubbers, nuclear fuel reprocessing, sour gas handling, & pesticide production.

Material & Process Capability

HASTELLOY® C22® (N06022) is one of the most versatile alloys available today with resistance to both uniform and localized corrosion and a variety of mixed industrial chemicals. It is used in severely corrosive environments with high chloride and high temperature conditions, such as flue-gas scrubbers, nuclear fuel re-processing, sour gas handling, and pesticide production. It provides superior protection from pitting, crevice attack, and stress corrosion cracking.

The Velo3D intelligent additive printing solution uniquely enables companies to build the parts they need without compromising design or quality – resulting in complex parts higher in performance than traditional casting techniques or other additive methods.

General Process

HASTELLOY® C22® contains chromium, molybdenum, tungsten, and iron, making the alloy resistant to seawater corrosion. It exhibits excellent weldability and is easily fabricated into industrial components. This datasheet specifi es the expected mechanical properties and characteristics of this alloy when manufactured on a Velo3D Sapphire System.

All data is based on parts built using Velo3D standard 50 μm layer thickness parameters, using Praxair TruForm C22, a Velo3D-approved HASTELLOY® C22® powder. HASTELLOY® is a registered trademark of Haynes International, Inc.


  • ASTM G28A: Corrosion rate noted after 24 hrs is 29 mils/year
  • ASTM G36: No cracking in 48 hrs
  • ASTM G48B : No pitting, crevice corrosion or weight loss noted in 48 hrs
  • ASTM G150: No pitting or crevice corrosion noted up to 85°C

Process Data

Density, g/cc (lbs/cubic inch)8.69 (0.313)
Relative Density, percent99.9+
Surface Finish2, Sa, μm (μin)<15 (590)

Mechanical Properties at Room Temperature

Property3Modulus of Elasticity,
GPa (msi)
Ultimate Tensile
Strength, MPa (ksi)
Yield (0.2% Off set),
MPa (ksi)
Elongation At Break,
Process RecipeTBR (cc/h)4MinAverageMinAverageMinAverageMinAverage
1kW/50 μm45As printed
w/o Stress Relief
141 (21)176 (26)780 (113)784 (114)520 (75)537 (78)34.538.3
As printed
w/ Stress Relief6
158 (23)163 (24)840 (122)845 (123)490 (71)493 (72)39.541.6
w/o Stress Relief,
after HIP5
173 (25)206 (30)720 (104)722 (105)380 (55)386 (56)3143.3
w/ Stress Relief6,
after HIP5
156 (23)160 (23)705 (102)710 (103)420 (61)423 (61)55.556.5
1. Results were also obtained for commercially available rolled material and found to be comparable. 2. Depends on orientation and process selected; for angles >25° from horizontal. 3. Mechanical & test samples printed in vertical orientation, machined to ASTM E8 (round specimen #3). 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. HIP at 100 MPa, 1120°C±15°C (2050°F±27°F), hold for 240±60 min and cool under inert atmosphere to below 425°C (800°F). 6. Stress relief at 1038°C±14°C (1900°F±25°F) for 45 min and air cool. Mechanical properties were also checked in the following states and verified to be within ASTM B575 specification: Vertical orientation, net shape (not machined) / Horizontal orientation / Horizontal orientation using both lasers (stitch line at gauge region of tensile bar).

Qualified Powder Suppliers

DS-HastC22.EN.2024-03-15.v2-35.U.USL 0905-11397_F. Specifications are subject to change without notice. ©2024 Velo3D, Inc. All rights reserved. Velo, Velo3D, Sapphire, and Intelligent Fusion are registered US trademarks and Assure, Flow, and Without Compromise are trademarks of Velo3D, Inc. All other product or company names may be trademarks and/or registered trademarks of their respective owners.