PROPRIETARY Inconel alloy 718 Nickel Alloys

Material group: Nonferrous Alloys / Nickel Alloys

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2021-12

Total number of updates: 17

Update History

2021-08 2021-07 2021-06 2021-04 2019-03 2019-01 2018-03 2017-08 2017-05 2017-03 2016-12 2016-08 2016-03 2015-01 2014-11 2014-05

This material has 2034 properties — only a subset is shown here.

Unlock full material properties, including detailed values across temperatures and conditions.

PROPRIETARY Inconel alloy 718 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.20 – 0.80

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.006

UNIT

CAS NUMBER

7440-42-8

CRITERIA

VALUE

≤ 0.08

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

Ni+Co

VALUE

val1

UNIT

CAS NUMBER

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

Special Metals Corporation, Product Data Sheets,

Looking for full material performance data?

PROPRIETARY Inconel alloy 718 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

185 — 208.8 GPa

Unlock full details

Thermal Conductivity

val1 W/(m∙°C)

Unlock full details

Electrical Resistivity

val1 Ω∙mm²/m

Unlock full details

Density

val1 kg/dm³

Unlock full details

Electrical Conductivity

val1 S/m

Unlock full details

Heat Capacity

val1 J/(kg∙°C)

Unlock full details

Melting Temperature

val1 °C

Unlock full details

Service Temperature

val1 °C

Unlock full details

Shear Modulus

val1 GPa

Unlock full details

Dynamic Modulus of Elasticity

val1 GPa

Unlock full details

Poisson Coefficient

val1

Unlock full details

Torsional Modulus

val1 GPa

Unlock full details

This material has 2034 properties — only a subset is shown here.

Unlock detailed physical values across temperatures and conditions.

PROPRIETARY Inconel alloy 718 Heat Treatments

Annealed: 1800°F (980°C).
For most applications, INCONEL alloy 718 is specified as: solution annealed and precipitation hardened (precipitation hardening, age hardening, and precipitation heat treatment are synonymous terms). Alloy 718 is hardened by the precipitation of secondary phases (e.g. gamma prime and gamma double-prime) into the metal matrix. The precipitation of these nickel-(aluminum, titanium, niobium) phases is induced by heat treating in the temperature range of 593 to 816°C (1100 to 1500°F). For this metallurgical reaction to properly take place, the aging constituents (aluminum, titanium, niobium) must be in solution (dissolved in the matrix); if they are precipitated as some other phase or are combined in some other form, they will not precipitate correctly and the full strength of the alloy with not be realized. To perform this function, the material must first be solution heat treated (solution annealed is a synonymous term). Two heat treatments are generally utilized:
1. Solution anneal at 927-1010°C (1700-1850°F) followed by rapid cooling, usually in water, plus precipitation hardening at 718°C (1325°F) for 8 hours, furnace cool to 621°C (1150°F), hold at 621°C (1150°F) for a total aging time of 18 hours, followed by air cooling.
2. Solution anneal at 1038-1066°C (1900-1950°F) followed by rapid cooling, usually in water, plus precipitation hardening at 760°C (1400°F) for 10 hours, furnace cool to 649°C (1200°F), hold at 649°C (1200°F) for a total aging time of 20 hours, followed by air cooling.
If the material is to be machined, formed, or welded, it typically is purchased in the mill annealed or stress relieved condition. The material is then fabricated in its most malleable condition. After fabrication, it can be heat treated as required per the applicable specification.

PROPRIETARY Inconel alloy 718 Mechanical Properties

Temperature

≤ 0°C 0 - 30°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Tensile Strength

758.4 — 1682.3 MPa

Unlock full details

Brinell Hardness (HB)

val1

Unlock full details

Elongation, A

val1 %

Unlock full details

Yield Strength, Rp0.2

val1 MPa

Unlock full details

Impact Energy

val1 J

Unlock full details

Reduction of Area

val1 %

Unlock full details

Rockwell Hardness (HR)

val1

Unlock full details

Need complete mechanical properties to make the right choice?

Get complete data on strength, hardness, fatigue, and more.

PROPRIETARY Inconel alloy 718 International Equivalent Materials

Showing 15 of 166 results.

MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

SB-637 N07718

STANDARD

ASME

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

B 637 N07718

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

N07718

STANDARD

UNS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

B 670 N07718

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Official

MATERIAL

A 1014 N07718

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

H07718

STANDARD

COUNTRY / PRODUCER

China

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

Alloy 718

STANDARD

PROPRIETARY

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

B 983 N07718

STANDARD

ASTM

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Implicit

MATERIAL

ERNiFeCr-2

STANDARD

AWS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Implicit

MATERIAL

NS4301

STANDARD

COUNTRY / PRODUCER

China

EQUIVALENCE CATEGORY

Composition 100%

MATERIAL

NiCr19Fe19Nb5Mo3

STANDARD

ISO

COUNTRY / PRODUCER

International

EQUIVALENCE CATEGORY

Implicit

MATERIAL

NW7718

STANDARD

ISO

COUNTRY / PRODUCER

International

EQUIVALENCE CATEGORY

Implicit

MATERIAL

VDM alloy 718

STANDARD

PROPRIETARY

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

Implicit

MATERIAL

Nistelle 718

STANDARD

PROPRIETARY

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

Implicit

MATERIAL

HAYNES 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.

Need the full list of 166 international equivalents?

See all 166 equivalent grades with detailed mapping by standard, producer and equivalence category.

Optimize material selection for your application - Book A Demo

Looking to compare materials and make better decisions?

Access reliable material data, compare options, and make better decisions faster.

With Total Materia, you can:

Compare materials based on real engineering data

Find equivalent materials across standards

Evaluate performance for your specific conditions

Check compliance with global regulations

See how this works for your specific application

Take a Guided Tour

166Cross References

28Composition
1018Mechanical Properties
405Physical Properties
5Heat Treatment
3Metallography
-Machinability

210Stress-Strain
1Formability
20Fatigue
-Fracture
5Creep

2Joints
-Coatings
-Dimensions
-Tribology

13Corrosion
-Ageing
-Weatherability
20Irradiation

138Total Suppliers