ISO 40 CrMo 5 6 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: International / ISO
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Data updates

Latest Update: 2019-05
Total number of updates: 1
Update History

This material has 42 properties — only a subset is shown here.

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ISO 40 CrMo 5 6 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.35 – 0.45
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.00 – 1.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.40 – 0.70
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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

ISO/TR 4956: 1984 / Wrought steels for use at elevated temperatures in engines

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ISO 40 CrMo 5 6 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 211 GPa
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Thermal Conductivity
val1
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W/(m∙°C)
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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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Electrical Conductivity
val1
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S/m
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Heat Capacity
val1
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J/(kg∙°C)
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Poisson Coefficient
val1
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This material has 42 properties — only a subset is shown here.

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ISO 40 CrMo 5 6 Heat Treatments

  • Quenching and tempering: 840-870°C, oil quenching; Tempering: 600-700°C.
    If a stress relief treatment is necessary, the stress relief temperature should be at least 30°C lower than the tempering temperature.
    The indications of heat treatment for guidance only, except in cases where test samples are to be reference heat treated.

ISO 40 CrMo 5 6 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
850 — 1000 MPa
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Elongation, A
≥ 14 %
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Yield Strength, Rp0.2
≥ 635 MPa
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Impact Energy
val1
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J
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  • 3Cross References
  • 7Composition
  • 11Mechanical Properties
  • 18Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • 1Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • 1Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers