What material is W9Mo3Cr4V?

W9Mo3Cr4V tungsten molybdenum series universal high-speed steel has strong universality, comprehensive performance surpasses W6Mo6Cr4V2, and low cost. It can still maintain a high hardness at a working temperature of around 600 degree . Especially suitable for steel used in hot deformation molds and high-speed cutting tools.


Carbon C: {{0}}.77-0.87 (allowable deviation: ± 0.01)
Silicon Si: {{0}}.20-0.40 (allowable deviation: ± 0.05)
Manganese Mn: {{0}}.20-0.40 (allowable deviation: 0.04)
Sulfur S: Less than or equal to 0.030
Phosphorus P: Less than or equal to 0.030
Chromium Cr: 3.80~4.40 (allowable deviation: ± 0.05)
Nickel Ni: allowable residual content Less than or equal to 0.30
Copper Cu: allowable residual content Less than or equal to 0.25
Vanadium V: 1.30-1.70 (allowable deviation: ± 0.05)
Molybdenum Mo: 2.70-3.30 (allowable deviation: size ≤ 6, ± 0.05; size>6, ± 0.10)
Tungsten W: 8.50~9.50 (allowable deviation: size ≤ 10, ± 0.10; size>10, ± 0.20)

Hardness: Delivery hardness: (other processing methods) Less than or equal to 269HB; (Annealed) Less than or equal to 255HB. Sample heat treatment system and quenching and tempering hardness: Greater than or equal to 63HRC (box furnace), Greater than or equal to 64HRC (salt bath furnace)

Heat treatment specifications: quenching, preheating at 820-870 degree , heating at 1210-1230 degree (salt bath furnace) or 1220-1240 degree (box furnace), oil cooling, tempering at 540-560 degree twice, each time for 2 hours.
● Delivery status: hot-rolled, forged, and cold-drawn steel bars are delivered in an annealed state, while hot-rolled and forged steel bars are delivered after annealing plus other processing methods (peeling, light drawing, polishing, etc.).