Introduction
208.0 is a casting grade in the Aluminum-Copper Alloy family, specified in ASTM B26/B26M. The specification defines its chemical composition and mechanical requirements for the applicable sand-casting tempers. Casting process options include Sand Casting, subject to the applicable specification and component requirements.
| Field | Value |
|---|---|
| Designation | 208.0 |
| Material Type | Aluminum Alloy |
| Sub Type | Aluminum-Copper Alloy |
| Product Form | casting |
Manufacturing Process
Sand Casting
Equivalent Grades
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM B26/B26M | Standard Specification for Aluminum-Alloy Sand Castings | 05 | 208.0 | UNS A02080 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM B26/B26MEdition 05 · wt.%[1] |
|---|---|
| Si | 2.5–3.5 |
| Fe | ≤ 1.2 |
| Cu | 3.5–4.5 |
| Mn | ≤ 0.50 |
| Mg | ≤ 0.10 |
| Ni | ≤ 0.35 |
| Zn | ≤ 1.0 |
| Ti | ≤ 0.25 |
| Al | remainder |
Chemical requirements[2]
Notes
ASTM B26/B26M · Edition 05
[1] All properties in this column: inactive; nonmandatory X3
[2] Chemical composition: Other elements, total: ≤ 0.50 wt.%
Heat Treatment
ASTM B26/B26M–05 · F
F
Mechanical Properties
| Property | ASTM B26/B26MEdition 05[1] |
|---|---|
| Tensile Strength | ≥ 19.0 ksi ≥ 131 MPa |
| Yield Strength (Rp0.2) | ≥ 12.0 ksi[2] ≥ 83 MPa[2] |
| Elongation | ≥ 1.5 % |
| Brinell Hardness | 55 HB |
Notes
ASTM B26/B26M · Edition 05
[1] All properties in this column: inactive; nonmandatory X3; inch-pound published MPa companion values; 2 in. or 4 x diameter; Informative reference value; not an acceptance requirement
[2] Yield Strength (Rp0.2): 0.2% offset
Welding Conditions
N/A
Applications
At the material-family level, typical applications include custom, shaped aluminum sand-cast components for non-aerospace use. ASTM B26/B26M excludes aerospace applications; suitability of this grade must be checked against the component requirements and specified temper.
Last Updated: October 13, 2026