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15-7 Mo is a semi-austenitic precipitation-hardening stainless steel. It is known for its high strength, hardness and corrosion resistance. It can be easily formed in the annealed condition.

Component Elements Properties Percent
Carbon (maximum) .09%
Manganese (maximum) 1%
Phosphorus (maximum) .04%
Sulfur (maximum) .04%
Silicon (maximum) 1%
Chromium 14 – 16%
Nickel 6.5 – 7.75%
Molybdenum 2 – 3%
Aluminum .75 – 1.5%

Mechanical Properties, Solution Heat Treated

Nominal Thickness Inches Tensile Strength ksi, max Yield Strength at 0.2% Offset ksi, max Elongation In 2 Inches or 4D %, min
0.0015 to 0.005, excl 165 15
0.005 and over 150 65 25