GB B02181 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: China / GB

Data updates

Latest Update: 2026-01
Total number of updates: 1
Update History

This material has 37 properties — only a subset is shown here.

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GB B02181 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.050
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
As
VALUE
≤ 0.04
UNIT
%
CAS NUMBER
7440-38-2
CRITERIA
As+Sb+Sn
VALUE
≤ 0.075
UNIT
%
CAS NUMBER
CRITERIA
C
VALUE
val1
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UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Ca
VALUE
val1
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UNIT
%
CAS NUMBER
7440-70-2
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
val1
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UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
Pb
VALUE
val1
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UNIT
%
CAS NUMBER
7439-92-1
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
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6

GB/T 32959: 2025 / Bearing steels for forged bars, rings and blanks

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GB B02181 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 37 properties — only a subset is shown here.

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GB B02181 Heat Treatments


  • Quenching temperature: 820–850 °C (for Al-containing steels: 840-880°C);
    Quenching holding time: about 1.5 min for each 1 mm of specimen diameter or thickness;
    Quenching medium: oil;
    Tempering temperature: about 150°C;
    Tempering time: 1-2 h

GB B02181 Mechanical Properties


Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
179 — 260
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Grain Size
val1
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GB B02181 International Equivalent Materials


Showing 9 of 11 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Identical
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ISO
COUNTRY / PRODUCER
International
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
SANS
COUNTRY / PRODUCER
South Africa
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
TCVN
COUNTRY / PRODUCER
Vietnam
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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  • 11Cross References

  • 15Composition
  • 4Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

  • 3Total Suppliers