17-7PH annealed stainless steel sheet is a kind of Martensite Precipitation Hardening Stainless steel which is developed based on 18-8CrNi, also known as the control phase change stainless steel.

17-7PH annealed stainless steel sheets:
Precipitation hardening stainless steel
Standard: AISI, ASTM
Model: 17-7PH (631)
UNS number: S17700

Characteristics and application of 17-7PH annealed stainless steel sheets:
17-7PH is a kind of unstable austenite stainless steel after solution treatment which is with toughness and good processability, after adjustment, the austenite precipitated carbide phenological component changes, and then after the martensitic transformation processing, most organizations into the good toughness of low carbon martensite, the state is the using state of the stainless steel, and it is with good good mechanical properties under unstable austenite. The corrosion resistance of 17-7PH is better than that of common martensite stainless steel.

Chemical composition of 17-7PH annealed stainless steel sheet:
C: ≤0.09
Mn: ≤ 1
Si: ≤1
Cr: 16.0~18.0
Ni: 6.5~7.75
P: ≤0.04
S: ≤ 0.03
Al: 0.75~1.5

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