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Master alloys

Osprey® 4340/MA

Osprey® 4340/MA is a master alloy, designed for blending with carbonyl iron powder, for Metal Injection Moulding (MIM). It creates standard 4340 low-alloy steel after sintering.

Powder designed for

  • Metal Injection Moulding (MIM)

This metal powder is manufactured by Inert Gas Atomization (IGA), producing a powder with a spherical morphology which provides good flow characteristics and high packing density.

Technical data

Page updated Sep 14, 2023 1:41 PM CET (supersedes all previous editions)

Download datasheet PDF

Disclaimer: Data and recommendations are for guidance only, and the suitability of a powder for a specific process or application can be confirmed only when we know the actual conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Osprey® powder.

Range of master alloys

Osprey® Standards* Blend ratio Fe C Cr Ni Mo Si Mn W V Cu Nb
17-4 PH/MA - MA 1, Carbonyl Fe 2 Bal. ≤0.07 50.0 13.0 - ≤2.0 ≤2.0 - - 12.0 0.7 17-4 PH/MA
304L/MA - MA 1, Carbonyl Fe 2 6.5 ≤0.08 Bal. 30.0 - ≤3.0 3.5 - - - - 304L/MA
316L/MA - MA 1, Carbonyl Fe 2 - ≤0.08 Bal. 38.0 7.2 ≤1.0 ≤0.5 - - - - 316L/MA
4140/MA - MA 1, Carbonyl Fe 2 Bal. 1.2 3.0 - 0.6 2.6 2.6 - - - - 4140/MA
420/MA - MA 1, Carbonyl Fe 3 Bal. <1.5 50.0 - - ≤4.0 ≤4.0 - - - - 420/MA
4340/MA - MA 1, Carbonyl Fe 2 Bal. 1.2 2.4 4.7 0.75 0.75 1.8 - - - -
4605/MA - MA 1, Carbonyl Fe 2 Bal. 1.5 - 6.0 1.0 ≤1.0 - - - - - 4605/MA
8620/MA - MA 1, Carbonyl Fe 2 Bal. 0.6 1.6 1.6 0.6 0.9 2.4 - - - - 8620/MA
M2/MA - MA 1, Carbonyl Fe 2 Bal. 3.0 13.0 - 15.0 0.8 0.8 18.5 6.0 - - M2/MA

* Information about more standards is available in the datasheet for the respective alloy.

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