AISI 4340 and 4140 Low Alloy Steel Powder

AISI 4340 is a heat treatable medium-carbon, low-alloy steel alloyed with nickel, chromium and molybdenum, comparable with no-nickel added 4140. Both are suitable for heat treatment by quench and tempering to achieve high hardness and toughness. They are designed for additive manufacturing and metal injection moulding.

Item Fe C Cr Ni Mo Si Mn
4140 Bal 0.38-0.43 0.8-1.1 / 0.15-0.25 0.15-0.35 0.75-1.0
4340 Bal 0.38-0.43 0.7-0.9 1.65-2.0 0.2-0.3 0.15-0.35 0.6-0.8

Particle Size Distribution (PSD): 0-25, 15-45, 15-53, 45-105, 45-150um or sieved as required
Shape: Spherical
Type: Inert Gas atomized powder (IGA) or Plasma rotating electrode powder (PREP)
Powder packing: A wide range of packaging options is available. 5kg, 10kg, 25kg or as required with plastic bottle/can. All packaging materials are suitable for air, sea and road freight.
Application: 3D printing (AM), brazing and other processes.

Our powders are supplied with a certificate of analysis containing chemical composition, particle size distribution, and other information, such as SEM morphology, flow characteristics and apparent density, also is available upon request.

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