17-4PH stainless steel is a precipitation-hardening martensitic stainless steel (Fe-Cr-Ni-Cu-Nb) used extensively in aerospace and high-performance applications for components requiring high strength, corrosion resistance, and thermal stability to approximately 600°C. The H900 condition, achieved through solution annealing followed by precipitation hardening at 480°C, delivers yield strengths around 1,310 MPa and ultimate tensile strengths near 1,450 MPa with moderate ductility, making it suitable for critical fasteners, pump shafts, compressor components, and bearing races.
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15 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) | 313 – 390 | ksi | 5 entriesClick to expand | ||
Bearing Yield Strength(Fbry) | 255 – 288 | ksi | 5 entriesClick to expand | ||
Compressive Modulus(Ec) | Curve (10 pts) | ksi | — | ||
Compressive Yield Strength(Fcy)3 entries | 170 | ksi | 22°C · Bar · H900 · AMS 5643 · L · t=<8.000 in | ||
| ↳ | 175 | ksi | 22°C · Bar · H900 · AMS 5643 · L · t=<8.000 in | ||
| ↳ | Curve (6 pts) | ksi | L | ||
Elongation at Break(εf)2 entries | 10.00 | - | 22°C · Forging/Tubing · H900 · AMS 5643 · L · t=<8.000 in | ||
| ↳ | 10.00 | - | 22°C · Bar · H900 · AMS 5643 · L · t=<8.000 in | ||
Poisson's Ratio(ν) | 0.2700 | - | 22°C | ||
Shear Modulus(G) | 12,700 | ksi | 22°C · Investment Casting | ||
Ultimate Shear Strength(Fsu)3 entries | 123 | ksi | 22°C · Bar · H900 · AMS 5643 · t=<8.000 in | ||
| ↳ | 126 | ksi | 22°C · Bar · H900 · AMS 5643 · t=<8.000 in | ||
| ↳ | Curve (7 pts) | ksi | — | ||
S–N Curve (Wöhler)(S–N) | — | ksi | 7 entriesClick to expand | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain)) | Curve (47 pts) | ksi | 21°C · L | ||
Ultimate Tensile Strength(σUTS) | 190 – 195 | ksi | 5 entriesClick to expand | ||
Yield Strength (0.2% offset)(σy) | 170 – 175 | ksi | 5 entriesClick to expand | ||
Young's Modulus(E) | 28,500 | ksi | 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) | µin/in·°F | — | ||
Specific Heat vs Temperature(Cp(T)) | Curve (29 pts) | BTU/(lb·°F) | — | ||
Thermal Conductivity vs Temperature(k(T)) | Curve (17 pts) | BTU/(hr·ft·°F) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2820 | lb/in³ | 22°C |