GB T31200 Tool steels

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

Data updates

Latest Update: 2026-03
Total number of updates: 2
Update History
2015-12

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GB T31200 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.95 – 1.10
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.30 – 1.65
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 0.40
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

Alloy Tool Steels, GB/T 1299, 2014

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GB T31200 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 297 properties — only a subset is shown here.

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GB T31200 Heat Treatments


  • Quenched at 830 - 860°C, oil cooled.

GB T31200 Mechanical Properties


Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
179 — 229
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Rockwell Hardness (HR)
≥ 62
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GB T31200 International Equivalent Materials


Showing 15 of 162 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
CSN
COUNTRY / PRODUCER
Czech Republic
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
EU
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
EU
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
GOST
COUNTRY / PRODUCER
Russia
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PN
COUNTRY / PRODUCER
Poland
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
SS
COUNTRY / PRODUCER
Sweden
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
UNE
COUNTRY / PRODUCER
Spain
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
UNI
COUNTRY / PRODUCER
Italy
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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  • 162Cross References

  • 4Composition
  • 2Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • 1Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • 124Total Suppliers