Austenitic stainless steels

The standard range of Osprey® metal powder includes grades of ASTM 304L, 310S and 316L types to be used in, for example, additive manufacturing and metal injection moulding (MIM).

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The program includes:

  • General austenitic stainless steels
  • Thermal spray alloys

Other austenitic stainless steels are also available. Contact us to discuss the full range of metal powder alloys.

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General austenitic stainless steels

General austenitic stainless steels for a wide range of applications.

Selected austenitic stainless steels incl. chemical composition (nominal), %
Alloy (UNS) Description Fe C Cr Ni Mo Si Mn S P
304L
(S30403)
See below1) Bal. 0.03 18.0-
20.0
8.0-
12.0
- 1.0 2.0 0.03 0.045
310S
(S31008)
See below2) Bal. 0.08 24.0-
26.0
19.0-
22.0
- 1.5 2.0 0.03 0.045
316L
(S31603)
See below3) Bal. 0.03 16.0-
18.0
10.0-
14.0
2.0-
3.0
1.0 2.0 0.03 0.045
'904L' See below4) Bal. 0.02 19.0-23.0 23.0-28.0 4.0-5.0 1.0 2.0 0.035 0.045


1) Essentially non-magnetic, becomes slightly magnetic when cold worked. Low carbon content means less carbide precipitation in the heat-affected zone during welding and a lower susceptibility to intergranular corrosion.
2) Low carbon type 310 – for welding.
3) Good corrosion resistance to most chemicals. High creep strength at elevated temperatures. The low carbon content redices the possibility of in vivo corrosion for medical applications.
4) High-alloy austenitic stainless steel characterized by very good resistance to general corrosion in sulphuric, phosphoric and acetic acid as well as very good resistance to pitting corrosion and stress corrosion cracking.

Thermal spray alloys

Austenitic stainless steels for thermal spray, including flame spray and metalizing.

Selected austenitic stainless steels for thermal spray, including flame spray and metalizing incl. chemical composition (nominal), %
Alloy Description Fe C Cr Si Mn Ni Others
SC 30 Austenitic stainless steel of 304 type Bal. 0.08 19.0 1.0 2.0 10.0 -
SC 304L Low-carbon austenitic stainless steel Bal. 0.02 19.0 1.0 2.0 10.0 -
SC 316L Corrosion resistant stainless steel Bal. 0.02 17.0 1.0 2.0 12.0 Mo 2.5

Our austenitic stainless steel metal powder is typically used in applications such as: