PROPRIETARY ATI 718 Alloy Nickel Alloys

Material group: Nonferrous Alloys / Nickel Alloys

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2022-11

Total number of updates: 3

Update History

2020-11 2016-11

This material has 92 properties — only a subset is shown here.

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PROPRIETARY ATI 718 Alloy Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.50

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

0.003

UNIT

CAS NUMBER

7440-42-8

CRITERIA

VALUE

0.05

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-48-4

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-89-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

Nb+Ta

VALUE

val1

UNIT

CAS NUMBER

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

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-32-6

Allegheny Technologies Incorporated, Product Data Sheets,

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PROPRIETARY ATI 718 Alloy Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

185 — 205 GPa

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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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Poisson Coefficient

val1

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Shear Modulus

val1 GPa

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This material has 92 properties — only a subset is shown here.

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PROPRIETARY ATI 718 Alloy Heat Treatments

The optimum temperature for annealing or solution treating is determined by the relative importance of short or long time elevated temperature mechanical properties. If maximum short time yield and tensile strengths are required, the alloy should be solution treated at 940-995°C (1725 to 1825°F) prior to aging; best long time stress rupture or creep properties are obtained by solution treating at 1038-1066°C (1900 to 1950°F) and aging. If excess phases are present in the microstructure, they are more readily dissolved by the higher temperature solution treatment.

The best aging treatment following solution treatment is to hold the alloy at 718-732°C (1325 to 1350°F) for 8 hours, followed by furnace cooling to 621-649°C (1150 to 1200°F), holding for 8 hours and then air cooling. Since cold rolling accelerates the precipitation hardening reaction, cold rolled sheet, if not solution treated after cold reduction, develops optimum strength if aged at 691°C (1275°F) for 16 hours.

PROPRIETARY ATI 718 Alloy Mechanical Properties

Temperature

0 - 30°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Tensile Strength

≥ 965 MPa

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Elongation, A

val1 %

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Yield Strength, Rp0.2

val1 MPa

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PROPRIETARY ATI 718 Alloy International Equivalent Materials

Showing 3 of 4 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

N07718

STANDARD

UNS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Implicit

MATERIAL

Inconel alloy 718

STANDARD

PROPRIETARY

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

Implicit

MATERIAL

Alloy 718

STANDARD

PROPRIETARY

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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4Cross References

15Composition
27Mechanical Properties
32Physical Properties
1Heat Treatment
-Metallography
-Machinability

8Stress-Strain
-Formability
-Fatigue
-Fracture
-Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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