3d Printing

Material & Process Capability

Aluminum F357 is a lightweight, corrosion resistant, and highly dynamic load-bearing material ideal for applications that require a combination of mechanical and thermal load endurance with low weight. It is typically used for heat transfer and other components in the aerospace, energy, defense and automotive industries.

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

Aluminum F357 is a foundry-grade beryllium-free aluminum-silicon alloy, similar to A357. It has excellent weldability and corrosion resistance and is heat-treatable to T5, T6, and T7.

This data sheet specifies the expected mechanical properties and characteristics of this alloy when manufactured on a Velo3D Sapphire® System. Parts built from Aluminum F357 on a Sapphire System can be heat treated using processes similar to those used on parts manufactured by other methods. All data is based on parts built with Velo3D standard 50 μm layer thickness parameters. Velo3D uses Tekna Aluminium F357.

Typical Volume Rate1, cc/hr80
Density, g/cc (lbs/cubic inch)2.67 (0.097)
Relative Density, percent99+
Surface Finish2, Sa, μm (μin)<20 (787) for angles >25° from horizontal

Mechanical Properties at Room Temperature

 As PrintedAfter Heat Treatment4After HIP5
Property3Mean -3σMeanMean -3σMeanMean -3σMean
Modulus of Elasticity, GPa (msi)53.4 (7.75)73.0 (10.6)48.2 (7.00)71.8 (10.4)49.2 (7.14)75.8 (11.0)
Ultimate Tensile Strength, MPa (ksi)332 (48.1)350 (50.7)279 (40.5)307 (44.5)302 (43.8)329 (47.7)
Yield (0.2% Off set), MPa (ksi)230 (33.4)238 (34.5)225 (32.6)252 (36.6)226 (32.8)262 (37.9)
Elongation At Break, percent2.617.095.45109.1212.76
1. Geometry-dependent. 2. Depends on orientation and process selected. 3. Mechanical & test samples printed in vertical orientation.
4. Heat treatment solution at 540°C (1000°F) for 30 minutes, water quench and age at 160°C (320°F) for 6 hours 5. Hot Isostatic Pressing at 510°C
(950°F) at 15 ksi for 4 hours, rapid cool, solution at 540°C (1000°F) for 30 minutes, water quench and age at 160°C (320°F) for 6 hours.
DS-AlumF357.EN.2022-02-28.v1-13.U.USL 0905-10330_B 2022-02-28. Specifications are subject to change without notice.