SUS 632 precipitation hardened stainless steel PH15-7Mo

SUS 632 (PH15-7Mo, S15700, 0Cr15Ni7Mo2Al) precipitation hardening steel overview:

SUS632 has been widely used in load cells, air-conditioning pressure switch diaphragms, automotive expansion valve diaphragms, military industries, chemicals, shafts, valves, shipbuilding and chemical fiber and many other industries.

 

Chemical composition of SUS 632 (PH15-7Mo, S15700, 0Cr15Ni7Mo2Al) precipitation hardening steel:

C	Cr	Ni	Mo	Al
0.07	15.00	7.00	2.25	1.15

 

SUS 632 (PH15-7Mo, S15700, 0Cr15Ni7Mo2Al) precipitation hardening steel mechanical properties:

Density: 7.80kg / m3

Melting point: 1415 ～ 1450 ℃

Specific heat capacity: 460.6J / (kg · ℃).

 

SUS 632 (PH15-7Mo, S15700, 0Cr15Ni7Mo2Al) precipitation hardening steel main characteristics:

1. Corrosion resistance: Generally speaking, the corrosion resistance of SUS632 precipitation hardened steel is between 18-8 austenitic stainless steel and martensitic chromium stainless steel, while the corrosion resistance of SUS632 precipitation hardened steel is better than 17-7PH Precipitation hardened steel.

2. Process performance: Process performance includes cold and hot workability. SUS632 precipitation hardened steel can withstand cold working when it has an austenite structure. However, they all have a high tendency of cold work hardening. Therefore, cold rolling, cold stamping, etc. are mostly used with less deformation, and the deformation amount is as small as possible, and each solution amount is processed by a solution treatment method. The hot working of this steel is not difficult, and the suitable hot working temperature is 950-1150 ° C. The heat treatment of SUS632 precipitation hardening steel is more complicated and the requirements are very strict. Only when controlled according to the specified temperature, time and cooling rate, the ideal performance can be obtained.

3. Welding: The welding of SUS632 precipitation hardening steel is the same as that of general stainless steel. Arc welding, resistance welding and gas shielded welding can be used, and gas shielded welding is the best. Welding is generally performed in the solid solution treatment state of the material. Pre-heating is not required before welding, and it is best to perform heat treatment after welding. When the weld requires high strength, 17-7 steel wire with low δ-ferrite content is mostly used. When the weld strength is not high and the corrosion resistance is high, austenitic stainless steel wire can be used.

 

SUS 632 (PH15-7Mo, S15700, 0Cr15Ni7Mo2Al) precipitation hardening steel Application:

SUS632 precipitation hardened steel is used at a high temperature of 500 ° C. It is both austenitic stainless steel and austenitic heat-strength steel, but it is best not to exceed 540 ° C. Generally, SUS632 precipitation hardened steel is similar to 17-7PH It is usually used in the form of steel belts, and also used as springs, hot coils, gauge accessories, medical tools, oil drilling and other mechanical accessories.