Introduction
201.0 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 | 201.0 |
| 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 | 201.0 | UNS A02010 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM B26/B26MEdition 05 · wt.% |
|---|---|
| Si | ≤ 0.10 |
| Fe | ≤ 0.15 |
| Cu | 4.0–5.2 |
| Mn | 0.20–0.50 |
| Mg | 0.15–0.55 |
| Ti | 0.15–0.35 |
| Ag | 0.40–1.0[1] |
| Al | remainder |
Notes
ASTM B26/B26M · Edition 05
[1] Ag: Contains silver 0.40–1.0 %. Explicit silver requirement in footnote A is retained separately from Others, Each.
[2] Chemical composition: Other elements, each: ≤ 0.05 wt.%
[3] Chemical composition: Other elements, total: ≤ 0.10 wt.%
Heat Treatment
ASTM B26/B26M–05 · Sand Casting · T7 · Recommended heat treatment
| Step | Operation | Temperature / holding time | Cooling |
|---|---|---|---|
| 1 | Recommended: Solution heat treatment | 960 °F / 515 °C; Holding time: 2 h[1] | — |
| 2 | Recommended: Solution heat treatment | 980 °F / 525 °C; Holding time: 14–20 h[1] | Water quench |
| 3 | Recommended: Natural aging | Holding time: 12–24 h[2] | — |
| 4 | Recommended: Precipitation heat treatment | 370 °F / 190 °C; Holding time: 5 h[3] | Still air outside furnace |
Notes
ASTM B26/B26M · Edition 05
[1] T7, T7 · Recommended heat treatment: Source: ASTM B917/B917M–25 (Recommended; when specified by the material specification or purchase order).; ±10°F; Use suitable metal-temperature measurement; sections/microstructure affect soak time selection (7.2).; Quench in water at 150 to 212°F except as noted.; Time at solution temperature may be increased for section thickness over 1 in.; Cooling not required prior to second step.; ±5°C; Quench in water at 65 to 100°C except as noted.; Time at solution temperature may be increased for section thickness over 25 mm.
[2] T7, T7 · Recommended heat treatment: room temperature; Source: ASTM B917/B917M–25 (Recommended; when specified by the material specification or purchase order).; ±10°F; Use suitable metal-temperature measurement; sections/microstructure affect soak time selection (7.2).; No quenching required. Cool in still air outside the furnace.; ±5°C
[3] T7, T7 · Recommended heat treatment: Source: ASTM B917/B917M–25 (Recommended; when specified by the material specification or purchase order).; ±10°F; Use suitable metal-temperature measurement; sections/microstructure affect soak time selection (7.2).; No quenching required. Cool in still air outside the furnace.; ±5°C
Mechanical Properties
| Property | ASTM B26/B26MEdition 05 |
|---|---|
| Tensile Strength | ≥ 60.0 ksi / ≥ 415 MPa[1] |
| Yield Strength (Rp0.2) | ≥ 50.0 ksi / ≥ 345 MPa[1] |
| Elongation | ≥ 3.0 %[1] |
Notes
ASTM B26/B26M · Edition 05
[1] Tensile Strength/Yield Strength (Rp0.2)/Elongation: inch-pound; 2 in. or 4 x diameter / SI; 5 x diameter
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