Austenite Martensite Precipitation Hardening Stainless steel AISI 631

Austenite Martensite Precipitation Hardening Stainless steel AISI 631

Stainless steel AISI 631 equal material :17-7PH, SUS 631, X7CrNi17-7, 1.4568, S17700
AISI 631 is a 18-8CrNi based development of austenite Martensite Precipitation Hardening Stainless steel, also known as the control phase stainless steel. AISI 631 stainless steel after solid solution treatment of austenitic organization is unstable, there is toughness and processability, good after the adjustment, the austenite carbide precipitates phenological changes of components, through the martensitic transformation processing, most organizations into the toughness of low carbon tempering martensite, this state is the use of steel in the state, there is temperature and good mechanical properties. AISI 631 corrosion resistance superior to that of general martensitic stainless steel.

Stainless steel AISI 631 chemical composition

C	Mn	Ni	Si	P	S	Cr	Al
≤0.09	≤1.00	6.50-7.75	≤1.00	≤0.035	≤0.030	16.00-18.00	0.75-1.50

Stainless steel AISI 631 mechanical property
Ultimate tensile strength σ B (MPa): solid solution, ≤ 1030 degree ageing; 565, ≥ 1140 degree ageing; 510, ≥ 1230
yield strength σ 0.2 (MPa): solid solution, ≤ 380 degree ageing; 565, ≥ 960 degree ageing; 510, ≥ 1030
Elongation δ 5 (%): solid solution, ≥ 20 degree ageing; 565, ≥ 5 degree ageing; 510, ≥ 4

Stainless steel AISI 631 physical property
AISI 631 density: 7.67Kg/ m3
AISI 631 Stainless steel melting temperature range: 1415 - 1450 degree
AISI 631 Stainless steel common product exisiting form
Hot rod, forging bar, sheet, strip, casting, etc.

AISI 631 Stainless steel application
1The engine thrust reverser component
2 valve membrane
3The stainless steel elastic element
4 compressor disk
5The container, pipe, spring etc.

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