Introduction
208.0 is an aluminum-copper alloy grade covered by ASTM B26/B26M. Typical applications include cast manifolds, valve bodies and other pressure-containing cast components.
| Field | Value |
|---|---|
| Designation | 208.0 |
| Material Type | Aluminum Alloy |
| Sub Type | Aluminum-Copper Alloy |
| Product Form | casting |
Manufacturing Process
Sand Casting
Equivalent Materials
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[2] |
| Fe | ≤ 1.2[2] |
| Cu | 3.5–4.5[2] |
| Mn | ≤ 0.50[2] |
| Mg | ≤ 0.10[2] |
| Ni | ≤ 0.35[2] |
| Zn | ≤ 1.0[2] |
| Ti | ≤ 0.25[2] |
| Al | remainder[2] |
Chemical requirements[3]
Notes
ASTM B26/B26M · Edition 05
[1] All properties in this column: inactive; nonmandatory X3
[2] Si/Fe/Cu/Mn/Mg/Ni/Zn/Ti/Al: Source nature not classified
[3] Chemical composition: Other elements, total: ≤ 0.50 wt.%
Heat Treatment
ASTM B26/B26M–05
N/A
Mechanical Properties
Core Mechanical Properties
ASTM B26/B26M — 05 · Table X3.2 — Informative
| Property | F |
|---|---|
| Tensile Strength | ≥ 19.0 ksi ≥ 131 MPa |
| Yield Strength (Rp0.2) | ≥ 12.0 ksi[1] ≥ 83 MPa[1] |
| Elongation | ≥ 1.5 % |
| Brinell Hardness | 55 HB |
- inactive; nonmandatory X3; inch-pound table with published MPa companion values; 2 in. or 4 x diameter; Informative reference value; not an acceptance requirement
Notes
ASTM B26/B26M · Edition 05
[1] Yield Strength (Rp0.2): 0.2% offset
Welding Conditions
N/A
Applications
Aluminum-copper alloy ASTM B26/B26M 208.0 is used for cast manifolds, valve bodies and other pressure-containing cast components. Other cast components used in this material family include housings, covers, cylinder-related castings, pump components and valve components. Applications include engines, machinery and other industrial equipment, including replacement parts.
Alloy condition and the recorded purchase specification remain applicable; broader literature does not extend that specification to aerospace procurement.
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