ASTM A 471 Class14 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: United States / ASTM

Data updates

Latest Update: 2019-08

Total number of updates: 1

Update History

This material has 21 properties — only a subset is shown here.

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ASTM A 471 Class14 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.015

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.45

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

0.50 – 1.25

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7723-14-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-36-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

A471/A471M: 2019 / Standard Specification for Vacuum-Treated Alloy Steel Forgings for Turbine Rotor Disks and Wheels

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ASTM A 471 Class14 Physical Properties

Temperature

0 - 30°C

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 21 properties — only a subset is shown here.

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ASTM A 471 Class14 Heat Treatments

Preliminary heat treatment:The forgings shall be given such preliminary heat treatment as is proper for the design and composition. The forgings shall be heated to a suitable temperature for a sufficient length of time for complete austenitization and shall be suitably cooled to bring about complete transformation.
Heat treatment for mechanical properties: Reheating to a temperature above the upper critical temperature, holding for a sufficient length of time for complete austenitization, and liquid quenched.
Tempering: Final tempering temperature shall be not less than 595°C (1100°F), cooling under suitable conditions from the tempering temperature.
Stress relieving: Forgings shall be stress relieved after machining by heating slowly to a temperature within 55°C (100°F) below the final tempering temperature but in no case below 550°C (1025°F). Holding for sufficient length of time and cooling under suitable conditions.

ASTM A 471 Class14 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

≥ 860 MPa

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Brinell Hardness (HB)

255 — 302

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Elongation, A

≥ 18 %

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Impact Energy

val1 J

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Reduction of Area

val1 %

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Yield Strength, Rp0.2

val1 MPa

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-Cross References

11Composition
6Mechanical Properties
3Physical Properties
1Heat Treatment
-Metallography
-Machinability

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

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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