17-7PH stainless steel has outstanding metallurgical and machining process performance. Because the composition of the steel is close to the 18-8 type austenitic stainless steel, the austenite arrangement is still preserved in the solid solution state, which is convenient for processing and forming. The arrangement at this moment is in a sub-stable state, and then the required adjustment treatment and aging can be obtained. Strength and durability.
17-7PH steel contains 17% Cr and a large amount of Ni, so that it has satisfactory corrosion resistance and rust resistance, which is generally appropriate and close to the level of 18-8 stainless steel. 17-4PH data characteristics: 17-4PH is a kind of martensitic precipitation hardening stainless steel, the steel is easy to adjust the strength grade, and its strength can be adjusted by changing the heat treatment process. Its strength level can reach 1600MPa
Martensitic transformation and aging treatment to form the deposition hardening phase are the main strengthening means. Due to the low carbon, high chromium and copper content of 1.4542, its corrosion resistance is better than that of Crl3 type and 9Crl8, lCrl7Ni2 martensitic steel. In addition, the steel has good attenuation function, and its resistance to corrosion fatigue and water droplet erosion is better than that of 12%Cr martensitic steel. The welding process is simple and easy to process and manufacture, but it is more difficult to perform deep cold forming.
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