W6Mo5Cr4V4 (China / GB) Material Properties

Other designations: ,
Material group: Ferrous Alloys / Tool steels
Country/Standard: China / GB

Data updates

Latest Update: 2025-11
Total number of updates: 2
Update History:
2018-04

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Brinell Hardness (HB) ≤ 269 view details
Rockwell Hardness (HR) 64 view details
Brinell Hardness (HB) ≤ 269 view details
Rockwell Hardness (HR) 64 view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.72 — 8 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.279 — 0.289 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.25 – 1.35
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
3.80 – 4.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.15 – 0.40
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

GB/T 9943: 2025 / High-speed tool steels

Heat Treatments

  • Preheat temperature: 800-900°C; Quenching temperature: 1200-1220°C (salt bath or box furnace); Quenching medium: oil or salt bath; Tempering temperature: 550°C.<br />Tempering shall be performed three times: each time for 1 hour in a salt bath, and for 2 hours each in a box furnace or vacuum furnace.