W18Cr4V

Time:2020-12-24

W18Cr4V is the most widely used universal high speed steel with high hardness, red hardness and high temperature hardness, which is easy to grind. It is suitable for turning, planing, milling, reaming, broaching, drilling, gear cutting, taps, dies, etc. it is suitable for machining soft or medium hardness materials (below 300-320hb). And the production of high temperature wear-resistant mechanical parts.
W18Cr4V shall comply with GB / T 9943-1988 standard
W18Cr4V chemical composition: carbon C: 0.70 ~ 0.80 (allowable deviation: ± 0.01); silicon Si: 0.20 ~ 0.40 (allowable deviation: ± 0.05); manganese manganese: 0.10 ~ 0.40 (allowable deviation: ± 0.04); sulfur s: ≤ 0.030; phosphorus P: ≤ 0.030; chromium and chromium: 3.80 ~ 4.40 (allowable deviation: ± 0.05); nickel nickel nickel: allowable residual content ≤ 0.30; copper and copper: allowable residual content ≤ 0.25; vanadium V v Mo: 1.00-1.40 (allowable deviation: ± 0.05); Mo: 0.30 (allowable deviation: dimension ≤ 6, ± 0.05; dimension > 6, ± 0.10); W: 17.50-19.00 (allowable deviation: dimension ≤ 10, ± 0.10; > 10, ± 0.20).
W18Cr4V mechanical properties: hardness: delivery hardness: (other processing methods) ≤ 269hb; (annealing) ≤ 255hb. Heat treatment system and quenching and tempering hardness of samples: ≥ 63hrc.
Specification for heat treatment of W18Cr4V round steel: quenching, preheating at 820-870 ℃, heating at 1270-1285 ℃ (salt bath furnace) or 1270-1285 ℃ (box furnace), oil cooling, tempering at 550-570 ℃ twice, 1H each time.
W18Cr4V delivery status: hot rolled, forged and cold drawn steel bars are delivered in annealed state; hot rolled and forged steel bars are delivered in annealed + other processing methods (peeling, light drawing, polishing, etc.).
W18Cr4V