Inconel 625 
3d Printing

Material & Process Capability

Inconel® 625 is a solid solution strengthened nickel-based superalloy. It is characterized by having excellent tensile, creep, and rupture properties, particularly at high temperatures. IN625 has good corrosion resistance in various corrosive environments.

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

In addition to its strength, IN625 is characterized by its superb fatigue, creep, and rupture resistance in extreme environments. IN625 is difficult to shape and machine using subtractive manufacturing techniques.

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 using Velo3D standard 50 μm layer thickness parameters, using Praxair Tru-Form 625-2, a Velo3D-approved powder.

Parts built from IN625 on a Sapphire System can be heat treated like those manufactured by other methods.

Typical Volume Rate1, cc/hr51
Density, g/cc (lbs/cubic inch)8.19 (0.296)
Relative Density, percent99.9+
Surface Finish2, Sa, μm (μin)<15 (590) for angles >25° from horizontal

Mechanical Properties at Room Temperature

 As PrintedSolution Anneal4After HIP5
Property3, MPa (ksi)Mean -3σMeanMean -3σMeanMean -3σMean
Ultimate Tensile Strength, MPa (ksi)868 (126)875 (127)826 (120)833 (121)885 (128)892 (129)
Yield (0.2% Off set), MPa (ksi)559 (81)576 (83.6)371 (53.8)377 (54.7)374 (54.2)385 (55.8)
Elongation At Break, percent39.141.756.360.343.948.9
Hardness, HRB949686888588
1. Geometry-dependent. 2. Depends on orientation & process selected. 3. Mechanical & test samples printed in vertical orientation. 4. Solution Anneal per AMS7000: product solution annealed in accordance with AMS2774 under inert or vacuum atmosphere at 1190 °C± 4°C (2174°F±39°F) for 60±10 minutes; cooled at a rate equal to an air cooling or faster to 650°C (1200°F) and cooled from 650°C (1200°F) at any rate. 5. Hot Isostatic Pressing per AMS7000: HIP under inert atmosphere at 14,500 psi (100 MPa) minimum within 1149°C to 1204°C (2100°F to 2200°F), held at selected temperature within ±14°C (±25°F) for 3 to 5 hours; under inert atmosphere in autoclave to below 649°C (1200°F). Cool from 649°C (1200°F) at any rate.

DS-In625.EN.2022-05-26.v1-04.U.USL 0905-18669_C 2022-05-26. Specifications are subject to change without notice.