7475 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
7475 is a controlled-purity Al-Zn-Mg-Cu alloy developed to provide superior fracture toughness and fatigue crack growth resistance at strength levels matching 7075. Widely specified for critical aircraft fuselage and wing skins.
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 | 7475 | Aluminum Association | —Ref: Kaiser Aluminum Technical Engineering Datasheet |
| UNS | A97475 | Unified Numbering System | —Ref: Kaiser Aluminum Technical Engineering Datasheet |
| ISO | AlZn5.5MgCu(A) | International Organization for Standardization | —Ref: Kaiser Aluminum Technical Engineering Datasheet |
| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| AA 7475 | Commercial Alias | Colloquial or commercial industry synonym |
| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| ASTM International | ASTM B209 | Standard Specification for Aluminum and Aluminum-Alloy Sheet and PlatePRODUCT_SPECIFICATION · Product form: Sheet & Plate | Specification Reference |
| SAE International | AMS 4084 | Aluminum Alloy Plate 5.7Zn - 2.2Mg - 1.6Cu - 0.22Cr (7475-T651)PRODUCT_SPECIFICATION · Product form: Sheet & Plate | 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 | ≤ 0.10 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Iron | Fe | 0 | MAXIMUM | ≤ 0.12 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Copper | Cu | 0 | RANGE | 1.20 – 1.90 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Manganese | Mn | 0 | MAXIMUM | ≤ 0.06 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Magnesium | Mg | 0 | RANGE | 1.90 – 2.60 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Chromium | Cr | 0 | RANGE | 0.18 – 0.25 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Zinc | Zn | 0 | RANGE | 5.20 – 6.20 | wt% | Ref: Kaiser Aluminum Corporation | VERIFIED |
| Titanium | Ti | 0 | MAXIMUM | ≤ 0.06 | 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 | 2.8 g/cm³ | TYPICAL | 2.8 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 | 23.4 µm/(m·K) | TYPICAL | 23.4 µm/(m·K) | Kaiser Aluminum Corporation | VERIFIED | |
| Solidus Temperature | 532 °C | TYPICAL | 532 °C | Kaiser Aluminum Corporation | VERIFIED | |
| Liquidus Temperature | 635 °C | TYPICAL | 635 °C | Kaiser Aluminum Corporation | VERIFIED | |
| Thermal ConductivityCondition: T651 Temper | 142 W/(m·K) | TYPICAL | 142 W/(m·K) | Kaiser Aluminum Corporation | VERIFIED | |
| Thermal ConductivityCondition: T7351 Temper | 163 W/(m·K) | TYPICAL | 163 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: T651 Temper | 36 % IACS | TYPICAL | 36.0 % IACS | Kaiser Aluminum Corporation | VERIFIED | |
| Electrical ConductivityCondition: T7351 Temper | 42 % IACS | TYPICAL | 42.0 % 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-7475 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-7475 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-7475 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-7475 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-7475 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-7475 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-7475 Physical Properties T651 Temper. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Physical Properties T7351 Temper. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Mechanical Properties T651 Sheet & Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Mechanical Properties T7351 Sheet & Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Mechanical Properties T7651 Sheet & Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Hardness T651 Sheet & Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Hardness T7351 Sheet & Plate. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Designation AA 7475. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Designation UNS A97475. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Designation ISO AlZn5.5MgCu(A). Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Specification ASTM B209. Selected facts only; no decorative text or full standard tables reproduced.
Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-7475 Specification AMS 4084. Selected facts only; no decorative text or full standard tables reproduced.