GJB 25Cr3MoA Structural and constructional steels

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

Data updates

Latest Update: 2016-11
Total number of updates: 1
Update History

This material has 34 properties — only a subset is shown here.

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GJB 25Cr3MoA Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.2000 – 0.2800
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
3.0000 – 3.5000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.2000
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
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
Sn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-31-5

GJB 6487: 2008 / Specification for high pure alloy structural steel bars for aviation

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GJB 25Cr3MoA 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 34 properties — only a subset is shown here.

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GJB 25Cr3MoA Heat Treatments

  • Quenched and tempered (I): Quenched at 900+/-10°C, oil cooled and Tempered at 580 to 630°C, air cooled.
    Quenched and tempered (II): Quenched at 900+/-10°C, oil cooled and Tempered at 570 to 620°C, air cooled.
    Quenched and tempered (III): Quenched at 900+/-10°C, oil cooled and Tempered at 550 to 600°C, air cooled.

GJB 25Cr3MoA Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
930 — 1280 MPa
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Brinell Hardness (HB)
≥ 269
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Elongation, A
≥ 11 %
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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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Yield Strength, Rp0.2
val1
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MPa
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  • 1Cross References
  • 10Composition
  • 19Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers