ASTM A 723 Grade 3 Class 2 Structural and constructional steels

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

Data updates

Latest Update: 2019-04
Total number of updates: 1
Update History

This material has 30 properties — only a subset is shown here.

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ASTM A 723 Grade 3 Class 2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.40
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.80 – 2.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 0.90
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
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
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

A723/A723M: 2018 / Alloy Steel Forgings for High-Strength Pressure Component Application

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ASTM A 723 Grade 3 Class 2 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 30 properties — only a subset is shown here.

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ASTM A 723 Grade 3 Class 2 Heat Treatments

  • Heat treatment shall consist of normalizing (which may be part of the preliminary treatment), reaustenitization, liquid quenching, and tempering. The forgings shall be quenched in a suitable liquid medium by spraying or immersion. Quenching shall be followed by tempering at a minimum temperature of 540°C (1000°F). The minimum time at tempering temperature shall be 0.5h / 25 mm of maximum section thickness, unless otherwise agreed between supplier and purchaser.

ASTM A 723 Grade 3 Class 2 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
825 MPa
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Tensile Strength
930 MPa
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Elongation, A
14 %
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Reduction of Area
val1
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%
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Impact Energy
val1
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J
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  • 12 Cross References
  • 9 Composition
  • 5 Mechanical Properties
  • 3 Physical Properties
  • 1 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • - Dimensions
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