GB T33390 Tool steels

Material group: Ferrous Alloys / Tool steels
Country / Standard: China / GB
Indicative price:

Data updates

Latest Update: 2026-03
Total number of updates: 2
Update History
2025-11

This material has 453 properties — only a subset is shown here.

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GB T33390 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.80 – 0.90
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
3.80 – 4.40
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

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GB T33390 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.72 — 8 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 453 properties — only a subset is shown here.

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GB T33390 Heat Treatments

  • Preheat temperature: 800-900°C; Quenching temperature: 1200-1220°C (salt bath), 1210-1230°C (box furnace); Quenching medium: oil or salt bath; Tempering temperature: 550°C.
    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.
  • Preheating at 730 - 840°C; heating at 1210 - 1230°C in a controlled atmosphere or salt bath 5 - 15 min, oil cooling. Tempering at 540 - 560°C, twice (in controlled atmosphere or salt bath), 2 hours each.

GB T33390 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
≤ 255
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Rockwell Hardness (HR)
≥ 64
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GB T33390 International Equivalent Materials

Showing 15 of 212 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
HS6-5-2
STANDARD
ISO
COUNTRY / PRODUCER
International
EQUIVALENCE CATEGORY
Official
MATERIAL
A 600 M2 regular C
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
W6Mo5Cr4V2
STANDARD
YB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
A 600 T11302
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
BM 2
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Implicit
MATERIAL
1.3243
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
1.3342
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
1.3553
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
S 6-5-2-5
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SC 6-5-2
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
X82WMoCrV6-5-4
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
HS6-5-2C
STANDARD
EN
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
1.3243
STANDARD
EN
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
1.3342
STANDARD
EN
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
HS 6-5-2
STANDARD
EU
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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See all 212 equivalent grades with detailed mapping by standard, producer and equivalence category.

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  • 212Cross References
  • 16Composition
  • 4Mechanical Properties
  • 4Physical Properties
  • 2Heat Treatment
  • 25Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • 1Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 189Total Suppliers