5Cr15MoV martensitic stainless steel heat treatment: 1060 ℃ heating quenching can obtain the highest hardness value, tempered at 500 ℃ or so, 5Crl5MoV steel shows a secondary hardening phenomenon. Compared with 3Cr13 steel, 5Crl5MoV steel has higher quenching hardness and tempering stability.
The stainless steel whose mechanical properties can be adjusted by heat treatment is, in general terms, a class of hardenable stainless steel. Typical grades are Cr13 type, such as 2Cr13, 3Cr13, 4Cr13 and so on. Higher hardness after quenching, different tempering temperatures with different toughness combinations, mainly used for steam turbine blades, cutlery, surgical instruments. According to the difference in chemical composition, martensitic stainless steel can be divided into martensitic chromium steel and martensitic chromium-nickel steel two categories. According to the different organization and strengthening mechanism, it can also be divided into martensitic stainless steel, martensitic and semi-austenitic (or semi-martensitic) precipitation hardening stainless steel and martensitic aging stainless steel.