7050 Aluminum
Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification, ASTM/CDA endorsement, or guaranteed material conformity for procurement.
Key Engineering Properties
Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.
Engineering Summary
7050 is an advanced aerospace Al-Zn-Mg-Cu-Zr alloy engineered for thick plate sections and critical forgings. It combines ultra-high strength with low quench sensitivity, high fracture toughness, and superior resistance to exfoliation and stress corrosion cracking in overaged T7-type tempers.
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Standard Designations & Applicable Specifications
Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| AAPRIMARY | 7050 | Aluminum Association | —Ref: Kaiser Aluminum Technical Engineering Datasheet |
| UNS | A97050 | Unified Numbering System | —Ref: Kaiser Aluminum Technical Engineering Datasheet |
| ISO | AlZn6CuMgZr | International Organization for Standardization | —Ref: Kaiser Aluminum Technical Engineering Datasheet |
| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| AA 7050 | Commercial Alias | Colloquial or commercial industry synonym |
| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| SAE International | AMS 4050 | Aluminum Alloy Plate 6.2Zn - 2.3Cu - 2.2Mg - 0.12Zr (7050-T7451)PRODUCT_SPECIFICATION · Product form: Plate | Specification Reference |
| SAE International | AMS 4342 | Aluminum Alloy Extrusions 6.2Zn - 2.3Cu - 2.2Mg - 0.12Zr (7050-T74511)PRODUCT_SPECIFICATION · Product form: Extrusions | Specification Reference |
Chemical Composition (Weight %)
Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).
| Element | Symbol | Atomic No. | Semantic Basis | Specified Value | Unit | Metallurgical Notes & Qualification | Data Status |
|---|---|---|---|---|---|---|---|
| Silicon | Si | 0 | MAXIMUM | ≤ 0.12 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Iron | Fe | 0 | MAXIMUM | ≤ 0.15 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Copper | Cu | 0 | RANGE | 2.00 – 2.60 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Manganese | Mn | 0 | MAXIMUM | ≤ 0.10 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Magnesium | Mg | 0 | RANGE | 1.90 – 2.60 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Chromium | Cr | 0 | MAXIMUM | ≤ 0.04 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Zinc | Zn | 0 | RANGE | 5.70 – 6.70 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Titanium | Ti | 0 | MAXIMUM | ≤ 0.06 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Zirconium | Zr | 0 | RANGE | 0.08 – 0.15 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Other Elements Each | OE | 0 | EACH | ≤ 0.05 each | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Other Elements Total | OT | 0 | TOTAL | ≤ 0.15 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Aluminum | Al | 0 | REMAINDER | Remainder | wt% | Balance aluminumRef: Kaiser Aluminum Corporation | VERIFIED |
Physical Properties
Source-specific physical properties. Test temperatures are shown only where reported.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Density | 2.83 g/cm³ | TYPICAL | 2.83 g/cm³ | Kaiser Aluminum Corporation | VERIFIED |
Thermal & Thermodynamic Properties
Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Coefficient of Thermal Expansion | 23.5 µm/(m·K) | TYPICAL | 23.5 µm/(m·K) | Kaiser Aluminum Corporation | VERIFIED | |
| Solidus Temperature | 466 °C | TYPICAL | 466 °C | Kaiser Aluminum Corporation | VERIFIED | |
| Liquidus Temperature | 635 °C | TYPICAL | 635 °C | Kaiser Aluminum Corporation | VERIFIED | |
| Thermal ConductivityCondition: T76, T76511 Temper | 154 W/(m·K) | TYPICAL | 154 W/(m·K) | Kaiser Aluminum Corporation | VERIFIED | |
| Thermal ConductivityCondition: T74, T74511 Temper | 157 W/(m·K) | TYPICAL | 157 W/(m·K) | Kaiser Aluminum Corporation | VERIFIED |
Electrical Properties
Electrical conductivity and resistivity in their reported units and conditions.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Electrical ConductivityCondition: T76, T76511 Temper | 39.5 % IACS | TYPICAL | 39.5 % IACS | Kaiser Aluminum Corporation | VERIFIED | |
| Electrical ConductivityCondition: T74, T74511 Temper | 40.5 % IACS | TYPICAL | 40.5 % IACS | Kaiser Aluminum Corporation | VERIFIED |
Contextual Mechanical Properties & Tempers
Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.
Sources & Provenance Trail
Reference publications and standards organization registers cited across this material record.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Chemical Composition Limits. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties DENSITY. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties ELASTIC_MODULUS. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties THERMAL_EXPANSION. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties SOLIDUS_TEMPERATURE. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties LIQUIDUS_TEMPERATURE. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties T76, T76511 Temper. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Physical Properties T74, T74511 Temper. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Mechanical Properties T7451 Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Mechanical Properties T76511 Extrusions. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Hardness T7451 Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Hardness T76511 Extrusions. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Designation AA 7050. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Designation UNS A97050. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Designation ISO AlZn6CuMgZr. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Specification AMS 4050. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7050 Specification AMS 4342. Selected facts only; no decorative text or full standard tables reproduced.