ASTM A 841 Grade G Class 9 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: United States / ASTM

Data updates

Latest Update: 2025-06
Total number of updates: 4
Update History
2019-09 2018-01 2014-02

This material has 83 properties — only a subset is shown here.

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ASTM A 841 Grade G Class 9 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≥ 0.008
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.13
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.30 – 1.00
UNIT
%
CAS NUMBER
7440-47-3
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
Pcm
VALUE
val1
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UNIT
%
CAS NUMBER
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

A841/A841M: 2017 / Standard Specification for Steel Plates for Pressure Vessels, Produced by Thermo-Mechanical Control Process (TMCP)

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ASTM A 841 Grade G Class 9 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 83 properties — only a subset is shown here.

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ASTM A 841 Grade G Class 9 Heat Treatments


  • Plates may be formed at temperatures not exceeding 530°C (985°F). Except for the TMR-I-T process, the plates shall be cooled directly after rolling without being allowed to cool below 550°C (1025°F).Quenching hardening shall be initiated from a temperature within the range from 550°C to 810°C (1025°F to 1490°F). Subsequent to quenching, the plates shall be tempered within the range from 555°C to 625°C (1030°F to 1155°F), holding at that temperature for a minimum of 1.2 min ⁄mm of thickness but for not less than 15 min, and then cooling at a rate of not less than 165°C ⁄h (300°F ⁄h), either in air or by quenching in water, to ambient temperature. Prior to the tempering treatment, the plates may be subjected to an intermediate heat treatment consisting of heating to a temperature in the range from 640°C to 710°C (1185°F to 1310°F), holding at that temperature for a minimum of 2.4 min ⁄mm of thickness, but in no case less than 15 min, and then water-quenching to below 150°C (300°F) in the case of plate thicknesses of more

ASTM A 841 Grade G Class 9 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
690 — 825 MPa
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Elongation, A
≥ 20 %
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Yield Strength, Rp0.2
≥ 585 MPa
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ASTM A 841 Grade G Class 9 International Equivalent Materials


Showing 2 of 3 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%

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  • 3Cross References

  • 10Composition
  • 8Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

  • 24Joints
  • -Coatings
  • 34Dimensions
  • -Tribology

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

  • -Total Suppliers