B443.0 Aluminum-Silicon Alloy Casting Material
Aluminum-Silicon Alloy
Introduction
B443.0 is an aluminum-silicon alloy grade covered by ASTM B26/B26M. Typical family applications include engine-related castings, transmission cases, motor housings and pump parts.
| Field | Value |
|---|---|
| Designation | B443.0 |
| Material Type | Aluminum Alloy |
| Sub Type | Aluminum-Silicon 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 | B443.0 | UNS A24430 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM B26/B26MEdition 05 · wt.% |
|---|---|
| Si | 4.5–6.0 |
| Fe | ≤ 0.8 |
| Cu | ≤ 0.15 |
| Mn | ≤ 0.35 |
| Mg | ≤ 0.05 |
| Zn | ≤ 0.35 |
| Ti | ≤ 0.25 |
| Al | remainder |
Notes
ASTM B26/B26M · Edition 05
[1] Chemical composition: Other elements, each: ≤ 0.05 wt.%
[2] Chemical composition: Other elements, total: ≤ 0.15 wt.%
Heat Treatment
ASTM B26/B26M–05
N/A
Mechanical Properties
Core Mechanical Properties
ASTM B26/B26M — 05 · Table 2 — Normative
ASTM B26/B26M — 05 · Table 2 — Informative
| Property | F |
|---|---|
| Brinell Hardness | 40 HB[2] |
ASTM B26/B26M — 05 · Table 3 — Normative
ASTM B26/B26M — 05 · Table 3 — Informative
| Property | F |
|---|---|
| Brinell Hardness | 40 HB[4] |
Notes
ASTM B26/B26M · Edition 05
[1] Tensile Strength/Yield Strength (Rp0.2)/Elongation: inch-pound; 2 in. or 4 x diameter
[2] Brinell Hardness: inch-pound; 2 in. or 4 x diameter; 500 kgf; 10 mm; Typical hardness is for information only, not required for acceptance
[3] Tensile Strength/Yield Strength (Rp0.2)/Elongation: SI; 5 x diameter
[4] Brinell Hardness: SI; 5 x diameter; 500 kgf; 10 mm; Typical hardness is for information only, not required for acceptance
Welding Conditions
N/A
Applications
For aluminum-silicon alloy ASTM B26/B26M B443.0, typical cast components in this material family include engine-related castings, transmission cases, motor housings and pump parts. Applications include automotive and industrial machinery, original equipment manufacture, repair and replacement supply. The specified alloy, temper and sand-casting purchase scope remain applicable; general automotive examples do not confer aerospace or safety-critical approval.
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Email Us for a QuoteLast Updated: November 6, 2026