Inconel 718 is a nickel-base superalloy containing chromium, iron, niobium, and molybdenum, designed for high-temperature structural applications in jet engines, gas turbines, and aerospace components requiring strength retention to approximately 650°C (1200°F). The ST (solution-treated) condition, produced via investment casting per AMS 5383, provides controlled mechanical properties including yield strength, ultimate tensile strength, and bearing strength suitable for critical fasteners and bearing applications with intermediate ductility.
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12 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Ultimate Bearing Strength(Fbru)2 entries | 1.393 | GPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in · e/D=1.5 | ||
| ↳ | 1.710 | GPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in · e/D=2 | ||
Bearing Yield Strength(Fbry)2 entries | 1.110 | GPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in · e/D=1.5 | ||
| ↳ | 1.296 | GPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in · e/D=2 | ||
Compressive Modulus(Ec) | 213.0 | GPa | 22°C · Sheet | ||
Compressive Tangent Modulus vs Stress(Etn(σ)) | Curve (12 pts) | Pa | 21°C · Solution treated and aged · L | ||
Compressive Yield Strength(Fcy) | 723.9 | MPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in | ||
Elongation at Break(εf) | 3.000 | % | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in | ||
Fatigue Crack Growth Rate(da/dN) | Curve (6 pts) | m/cycle | 538°C | ||
Fracture Toughness(KIC) | 104,000,000 | Pa·√m | — | — | |
Hardness (Vickers)(HV) | 390 | HV | — | — | |
Poisson's Ratio(ν) | 0.2840 | - | — | — | |
Poisson's Ratio vs Temperature(ν(T)) | Curve (17 pts) | - | Solution treated and aged | ||
Reduction of Area(RA) | 8.000 | % | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in | ||
Shear Modulus(G) | Curve (14 pts) | Pa | Solution treated and aged | ||
Ultimate Shear Strength(Fsu) | 606.7 | MPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in | ||
S–N Curve (Wöhler)(S–N) | Curve (40 pts) | Pa | 760°C · -0- · LT | ||
Stress Rupture Curve(σr(t)) | Curve (12 pts) | Pa | 538°C · 2 | ||
Stress–Strain Curve(σ–ε) | Curve (11 pts) | Pa | 20°C | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain)) | Curve (10 pts) | Pa | 21°C · Solution treated and aged · ST | ||
Ultimate Tensile Strength(σUTS) | 827.4 | MPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in | ||
UTS vs Time (Creep Strength)(Ftu(t)) | Curve (69 pts) | Pa | 649°C · 2, 21 | ||
Yield Strength (0.2% offset)(σy) | 723.9 | MPa | 22°C · Investment Casting · ST · AMS 5383 · t=≤0.500 in | ||
Yield Strength vs Temperature(σy(T)) | Curve (8 pts) | Pa | — | ||
Young's Modulus(E) | Curve (12 pts) | Pa | Solution treated and aged | ||
Young's Modulus vs Temperature(E(T)) | Curve (8 pts) | Pa | — |
2 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
CTE vs Temperature(α(T)) | Curve (10 pts) | 1/K | Solution treated and aged per indicated specification | ||
Specific Heat Capacity(Cp) | 435 | J/(kg·K) | — | — | |
Thermal Conductivity(k) | 11.40 | W/(m·K) | 22°C | — | |
Thermal Conductivity vs Temperature(k(T)) | Curve (8 pts) | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 8.190 | kg/m³ | — | — |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data