17-4PH (UNS S17400) is a precipitation-hardening martensitic stainless steel containing chromium, nickel, and copper that achieves high strength through heat treatment, commonly used in aerospace fasteners, pump shafts, and turbine components requiring corrosion resistance to 600°F. The H1025 condition provides a tensile yield strength of approximately 180 ksi after aging, offering excellent bearing and fatigue strength with moderate elongation suitable for highly stressed structural applications in jet engines and pressure vessels.
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7 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 | 1.813 | GPa | 22°C · Bar · H1025 · AMS 5643 · t=<8.000 in · e/D=1.5 | ||
| ↳ | 2.289 | GPa | 22°C · Bar · H1025 · AMS 5643 · t=<8.000 in · e/D=2 | ||
Bearing Yield Strength(Fbry)2 entries | 1.455 | GPa | 22°C · Bar · H1025 · AMS 5643 · t=<8.000 in · e/D=1.5 | ||
| ↳ | 1.724 | GPa | 22°C · Bar · H1025 · AMS 5643 · t=<8.000 in · e/D=2 | ||
Compressive Modulus(Ec) | Curve (10 pts) | Pa | — | ||
Compressive Tangent Modulus vs Stress(Etn(σ)) | Curve (11 pts) | Pa | 21°C · L | ||
Compressive Yield Strength(Fcy) | 958.4 | MPa | 22°C · Bar · H1025 · AMS 5643 · L · t=<8.000 in | ||
Elongation at Break(εf)2 entries | 12.00 | - | 22°C · Forging/Tubing · H1025 · AMS 5643 · L · t=<8.000 in | ||
| ↳ | 12.00 | - | 22°C · Bar · H1025 · AMS 5643 · L · t=<8.000 in | ||
Poisson's Ratio(ν) | 0.2700 | - | 22°C | ||
Shear Modulus(G) | 87.56 | GPa | 22°C · Investment Casting | ||
Ultimate Shear Strength(Fsu) | 655.0 | MPa | 22°C · Bar · H1025 · AMS 5643 · t=<8.000 in | ||
S–N Curve (Wöhler)(S–N)3 entries | Curve (40 pts) | Pa | 21°C · L | ||
| ↳ | Curve (40 pts) | Pa | 21°C · L | ||
| ↳ | Curve (40 pts) | Pa | 21°C · L | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain))2 entries | Curve (6 pts) | Pa | 21°C · L | ||
| ↳ | Curve (39 pts) | Pa | 21°C · L | ||
Ultimate Tensile Strength(σUTS)3 entries | 1.069 | GPa | 22°C · Sheet/Strip/Plate · H1025 · AMS 5604 · LT · t=≤4.000 in | ||
| ↳ | 1.069 | GPa | 22°C · Forging/Tubing · H1025 · AMS 5643 · L · t=<8.000 in | ||
| ↳ | 1.069 | GPa | 22°C · Bar · H1025 · AMS 5643 · L · t=<8.000 in | ||
Yield Strength (0.2% offset)(σy)3 entries | 999.7 | MPa | 22°C · Sheet/Strip/Plate · H1025 · AMS 5604 · LT · t=≤4.000 in | ||
| ↳ | 999.7 | MPa | 22°C · Forging/Tubing · H1025 · AMS 5643 · L · t=<8.000 in | ||
| ↳ | 999.7 | MPa | 22°C · Bar · H1025 · AMS 5643 · L · t=<8.000 in | ||
Young's Modulus(E) | 196.5 | GPa | 22°C · Sheet/Strip/Plate |
3 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 (13 pts) | 1/K | — | ||
Specific Heat vs Temperature(Cp(T)) | Curve (17 pts) | J/(kg·K) | — | ||
Thermal Conductivity vs Temperature(k(T)) | Curve (17 pts) | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 7.806 | kg/m³ | 22°C |