ISO 40 CrMoV 4 6 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: International / ISO

Indicative price:

Data updates

Latest Update: 2019-05

Total number of updates: 1

Update History

This material has 98 properties — only a subset is shown here.

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ISO 40 CrMoV 4 6 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.36 – 0.44

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

0.90 – 1.20

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.45 – 0.85

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7723-14-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

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

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ISO 40 CrMoV 4 6 Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 211 GPa

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Thermal Conductivity

val1 W/(m∙°C)

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Electrical Resistivity

val1 Ω∙mm²/m

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Density

val1 kg/dm³

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Electrical Conductivity

val1 S/m

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Heat Capacity

val1 J/(kg∙°C)

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Poisson Coefficient

val1

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This material has 98 properties — only a subset is shown here.

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ISO 40 CrMoV 4 6 Heat Treatments

Quenching and tempering (Q+T1): 880-950°C, oil quenching; Tempering: 670-720°C.
Quenching and tempering (Q+T2): 940-970°C, oil quenching; Tempering: 600-700°C.
Q+T1 apply to sizes up to 100 mm, Q+T2 to sizes above 100 up to 200 mm.
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 CrMoV 4 6 Mechanical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Tensile Strength

800 — 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 J

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44Cross References

8Composition
23Mechanical Properties
18Physical Properties
1Heat Treatment
-Metallography
-Machinability

2Stress-Strain
-Formability
-Fatigue
-Fracture
2Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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