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738 Nickel Alloy Modified for Laser Powder Bed Fusion (PBF-LB)

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Optimized for Processing in Laser Powder Bed Fusion (PBF-LB) Systems

MetcoAdd 738, is a high gamma prime nickel based superalloy where composition has been modified to improve the printability of the alloy to minimize cracking known to be present in printing the cast composition. The alloy powder has been proven to demonstrate minimal to crack free print. Printability depends on machine type, optimized parameters and process variables. 

Heat treated material properties at room temperature have been shown to be comparable to those of AMS 5410. Printed and heat treated samples of the modified composition have shown favorable hardness and 816°C (1500°F) tensile strength when compared with conventionally cast and heat treated material.





4 g/cm³ at 20 °C

typical apparent density, min

Particle size D10


19 μm

nominal values by laser diffraction

Particle size D50


31 μm

nominal values by laser diffraction

Particle size D90


49 μm

nominal values by laser diffraction

Particle size range


15 - 45 µm

ASTM C 1070 (Microtrac)

Technological properties

Application areas

Turbine engine hot section, Blades and heat shields



Chemical composition

Ni 17Cr 7(Al+Ti) 9Co 0.1C 2Mo 1.5Ta 0.06Zr



Handling recommendations

Blend contents prior to use to prevent segregation; Keep in the original container, or an approved alternative, tightly closed when not in use; Powder from previously opened containers should be stored in a humidity-controlled environment



Order number


Packaging size

4.5kg / 10 lb approx.

Processing history

Vacuum Induction Melted, Gas atomized (Argon)

Processing methods

Laser Powder Bed Fusion (PBF-LB)

This material data has been provided by Oerlikon Metco.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.