GB 20 Structural and constructional steels

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

Data updates

Latest Update: 2026-05
Total number of updates: 32
Update History

This material has 10773 properties — only a subset is shown here.

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GB 20 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.17 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.25
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.25
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
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
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

GB/T 699: 2015 / Quality carbon structure steels

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GB 20 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 211 GPa
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Electrical Resistivity
val1
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Ω∙mm²/m
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Density
val1
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kg/dm³
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Melting Temperature
val1
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°C
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Electrical Conductivity
val1
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S/m
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Poisson Coefficient
val1
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Shear Modulus
val1
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GPa
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Coefficient of Thermal Expansion (CTE)
val1
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10-6/°C
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This material has 10773 properties — only a subset is shown here.

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GB 20 Heat Treatments

  • Normalizing 910°C
  • Normalizing at 880-940°C.

GB 20 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
300 — 835 MPa
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Brinell Hardness (HB)
val1
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Elongation, A
val1
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%
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Impact Strength
val1
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kJ/m²
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Yield Strength, Rp0.2
val1
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MPa
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Impact Energy
val1
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J
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Reduction of Area
val1
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%
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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GB 20 International Equivalent Materials

Showing 15 of 584 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
1.0408
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Official
MATERIAL
St 45
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Official
MATERIAL
S20C
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Official
MATERIAL
E255
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Official
MATERIAL
1020
STANDARD
AISI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 510 1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 576 10L20
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 29 1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
1020
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 575 M1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 512 Grade 1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 513 Grade 1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 519 1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A 853 Grade 1020
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
E255
STANDARD
EN
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Official

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

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  • 584Cross References
  • 201Composition
  • 519Mechanical Properties
  • 78Physical Properties
  • 8Heat Treatment
  • 51Metallography
  • -Machinability
  • 68Stress-Strain
  • 1Formability
  • 3Fatigue
  • -Fracture
  • 153Creep
  • 83Joints
  • -Coatings
  • 60Dimensions
  • 1Tribology
  • 8491Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 472Total Suppliers