310S (old brand 0Cr25Ni20/new brand 06Cr25Ni20) is an austenitic chromium nickel stainless steel with good oxidation resistance and corrosion resistance. Because of the high percentage of chromium and nickel, 310S has much better creep strength, can continue to operate at high temperatures, and has good high temperature resistance.
Chinese name: 310S stainless steel
Hardness (HB): ≤ 187
Elongation: ≥ 40
Quenching: 500~550 810~830
310S stainless steel is austenitic chromium nickel stainless steel, which has good oxidation resistance, corrosion resistance and high temperature resistance. Because of the high percentage of chromium and nickel, it has much better creep strength, can continue to operate at high temperatures, and has good high temperature resistance. Due to the high content of nickel (Ni) and chromium (Cr), it has good oxidation resistance, corrosion resistance, acid and alkali resistance, and high temperature resistance. High temperature resistant steel pipes are specially used for making electric heating furnace tubes and other occasions. After the carbon content is increased in austenitic stainless steel, its strength is improved due to its solid solution strengthening effect. The chemical composition of austenitic stainless steel is characterized by adding molybdenum, tungsten, niobium, titanium and other elements based on chromium and nickel, Because of its face centered cubic structure, it has high strength and creep strength at high temperature. The melting point is 1470 ℃, the softening starts at 800 ℃, and the allowable stress continues to decrease.
Tensile strength（ б b）（Mpa）：≥520
Yield strength（ σ s）（Mpa）：≥205
Area reduction（ ψ）%： ≥50
ób（MPa）≥520，ó0.2（MPa）≥205 ， δ 5（%）≥40， Ψ (%) ≥ 50, HB ≤ 187 can withstand high temperature above 1150 ℃. The melting point is 1398 ℃~1454 ℃.
Stamping die, fixture, tool, gauge, paper cutter, auxiliary tool, etc
Improve the fragility of common carbon tool steel, so as to prolong the service life of tools. Vacuum degassing refining steel with stable quality. Good hardenability, good toughness and wear resistance after oil quenching (less quenching crack and deformation), and durable tools.
Annealed state, ≤ 207HB
Indentation diameter ≥ 4.20mm
Quenching, ≥ 62HRC