Stainless Steel

Stainless Steel 17-4 H1100

Specs: ASTM-A564, ASME-SA-564, AMS 5643
UNS#: S17400

Stainless Steel 17-4 H1100 is a precipitation-hardening martensitic Stainless Steel, which has corrosion resistance comparable to austenitic varieties. Our H1100 has been heat-treated to a minimum tensile strength of 140ksi, yield strength of 115ksi, an elongation in 2in of 14%, and a reduction of area of 45%. Cobalt is reported in the chemistry.


Save time and money by buying the material for your heat treatment. We do all work in large batches, driving the cost down and offering you fast delivery. Free heat treat charts will be included in our cert package upon request.


17-4 H1100 is used in applications for aerospace, chemical processing equipment, oil and petroleum refining equipment, food processing equipment as well as general metalworking.

Available shapes – round and rectangular


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