GB A38108 Structural and constructional steels

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

Data updates

Latest Update: 2026-02
Total number of updates: 2
Update History
2024-07

This material has 86 properties — only a subset is shown here.

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GB A38108 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.020
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
As
VALUE
≤ 0.010
UNIT
%
CAS NUMBER
7440-38-2
CRITERIA
As+Bi+Pb+Sb+Sn
VALUE
≤ 0.035
UNIT
%
CAS NUMBER
CRITERIA
B
VALUE
val1
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UNIT
%
CAS NUMBER
7440-42-8
CRITERIA
Bi
VALUE
val1
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UNIT
%
CAS NUMBER
7440-69-9
CRITERIA
C
VALUE
val1
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UNIT
%
CAS NUMBER
7440-44-0
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
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
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
Sb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-36-0
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
Sn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-31-5
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6
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
CRITERIA
Zr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-67-7

GB/T 5310: 2023 / Seamless steel tubes and pipes for high pressure boiler

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GB A38108 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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Coefficient of Thermal Expansion (CTE)
val1
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10-6/°C
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This material has 86 properties — only a subset is shown here.

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GB A38108 Heat Treatments

  • Normalizing temperature from 1040°C to 1080°C; Tempering temperature 760°C to 790°C.
    For S>70 mm steel pipes can be quenched and tempered. Quenching temperature not less than 1040°C, tempering temperature 760°C to 790°C.

GB A38108 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 620 MPa
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Brinell Hardness (HB)
190 — 250
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Elongation, A
≥ 16 %
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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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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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GB A38108 International Equivalent Materials

Showing 9 of 9 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
10Cr9MoW2VNbBN
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Identical
MATERIAL
A 335 Grade P92
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
10Cr9MoW2VNbBN
STANDARD
NB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
SA-335 Grade P92
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
KA-STBA29
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
KA-STPA29
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
Gr.92 [NF616]
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
K92460
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
10Cr9MoW2VNbBN
STANDARD
YB
COUNTRY / PRODUCER
China
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 9 equivalent grades with detailed mapping by standard, producer and equivalence category.

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  • 9Cross References
  • 23Composition
  • 25Mechanical Properties
  • 18Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • 3Creep
  • -Joints
  • -Coatings
  • 2Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 5Total Suppliers