2219 aluminum alloy in T81 temper is a copper-alloyed aluminum system solution heat-treated, artificially aged, and stress-relieved by stretching, providing high strength (yield ~40 ksi, ultimate ~57 ksi) with improved stress-corrosion cracking resistance compared to non-stress-relieved tempers. Primary applications include cryogenic tankage and aerospace structures requiring combined tensile strength and fracture toughness at temperatures down to liquid hydrogen (-423°F).
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18 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 | |
|---|---|---|---|---|---|
Compressive Modulus(Ec) | 10,800 | ksi | 22°C · Extruded shapes | ||
Compressive Tangent Modulus vs Stress(Etn(σ))2 entries | Curve (12 pts) | ksi | 21°C · L | ||
| ↳ | Curve (13 pts) | ksi | 21°C · LT | ||
Poisson's Ratio(ν) | 0.3300 | - | 22°C | ||
Shear Modulus(G) | 4,000 | ksi | 22°C · Extruded shapes | ||
Stress–Strain Curve(σ–ε)2 entries | Curve (17 pts) | ksi | 21°C · L | ||
| ↳ | Curve (16 pts) | ksi | 21°C · LT | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain))4 entries | Curve (8 pts) | ksi | 21°C · L | ||
| ↳ | Curve (9 pts) | ksi | 21°C · L | ||
| ↳ | Curve (9 pts) | ksi | 21°C · LT | ||
| ↳ | Curve (9 pts) | ksi | 21°C · LT | ||
Ultimate Tensile Strength(σUTS) | — | ksi | 5 entriesClick to expand | ||
Yield Strength (0.2% offset)(σy) | — | ksi | 5 entriesClick to expand | ||
Young's Modulus(E) | 10,500 | ksi | 22°C · Extruded shapes | ||
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 (15 pts) | BTU/(lb·°F) | — | ||
Thermal Conductivity vs Temperature(k(T)) | Curve (11 pts) | BTU/(hr·ft·°F) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1030 | lb/in³ | 22°C |