DIN 1725-2 Grade 3.2581 F – High-Performance G‑AlSi12 Alloy for Durable Cast Components
G-AlSi12 is an eutectic alloy with excellent casting characteristics. It has a medium strength but good plasticity, is weather and corrosion resistant. The alloy is suitable for difficult shapes, thin-walled, impact loaded cast parts. Application: devices, machines, vehicle, ship and apparatus engineering, housing, impellers, rib body, equipment support, filter bodies, facade panels
Properties
General
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Density | 2.65 g/cm³ | F | EN 1706 | |
20.0 °C | 2.65 g/cm³ | F | DIN 1725-2, EN 1676, EN 1706 |
Mechanical
| Property | Temperature | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|---|
Bending Fatigue Strength | 60.0 - 90.0 MPa | F | EN 1706 | ||
Elastic modulus | 75.0 GPa | F | EN 1706 | ||
20.0 °C | 75.0 GPa | F | DIN 1725-2, EN 1676, EN 1706 | ||
Elongation | 5.0 % | F | EN 1706 | A50 | |
6.0 % | F | EN 1706 | A50 | ||
20.0 °C | 3.0 % | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 5.0 - 10.0 % | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 6.0 - 12.0 % | F | DIN 1725-2, EN 1676, EN 1706 | ||
Hardness, Brinell | 50.0 [-] | F | EN 1706 | ||
55.0 [-] | F | EN 1706 | |||
20.0 °C | 45.0 [-] | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 45.0 - 60.0 [-] | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 50.0 [-] | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 50.0 - 65.0 [-] | F | DIN 1725-2, EN 1676, EN 1706 | ||
Poisson's ratio | 0.33 [-] | Typical for Cast 4xx.x Series Aluminium | |||
Tensile strength | 150.0 MPa | F | EN 1706 | ||
170.0 MPa | F | EN 1706 | |||
20.0 °C | 140.0 MPa | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 150.0 MPa | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 150.0 - 200.0 MPa | F | DIN 1725-2, EN 1676, EN 1706 | ||
20.0 °C | 170.0 - 230.0 MPa | F | DIN 1725-2, EN 1676, EN 1706 |
Thermal
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Coefficient of thermal expansion | 20 °C | 1.9999999999999998e-05 1/K | F | EN 1706 |
20 °C | 2.1e-05 1/K | F | DIN 1725-2, EN 1676, EN 1706 | |
20 °C | 2.2e-05 1/K | F | EN 1706 | |
100 °C | 1.9999999999999998e-05 1/K | F | EN 1706 | |
200.0 °C | 2.1e-05 1/K | F | DIN 1725-2, EN 1676, EN 1706 | |
200 °C | 2.1e-05 1/K | F | DIN 1725-2, EN 1676, EN 1706 | |
300 °C | 2.2e-05 1/K | F | EN 1706 | |
Melting point | 570.0 - 580.0 °C | F | EN 1706 | |
Specific heat capacity | 900.0 J/(kg·K) | F | EN 1706 | |
20.0 °C | 900.0 J/(kg·K) | F | DIN 1725-2, EN 1676, EN 1706 | |
Thermal conductivity | 140.0 - 170.0 W/(m·K) | F | EN 1706 | |
20.0 °C | 130.0 - 190.0 W/(m·K) | F | DIN 1725-2, EN 1676, EN 1706 |
Electrical
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Electrical conductivity | 17000000.0 - 24000000.0 S/m | F | EN 1706 | |
20.0 °C | 17000000.0 - 26000000.0 S/m | F | DIN 1725-2, EN 1676, EN 1706 | |
Electrical resistivity | 4.17e-08 - 5.88e-08 Ω·m | F | EN 1706 |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Aluminium | 85.1 % | F | DIN 1725-2, EN 1676, EN 1706 |
Copper | 0.05 % | F | DIN 1725-2, EN 1676, EN 1706 |
Iron | 0.5 % | F | DIN 1725-2, EN 1676, EN 1706 |
0.50 % | F | EN 1706 | |
Magnesium | 0.05 % | F | DIN 1725-2, EN 1676, EN 1706 |
Manganese | 0.001 - 0.4 % | F | DIN 1725-2, EN 1676, EN 1706 |
Silicon | 10.5 - 13.5 % | F | DIN 1725-2, EN 1676, EN 1706 |
Titanium | 0.15 % | F | DIN 1725-2, EN 1676, EN 1706 |
Zinc | 0.1 % | F | DIN 1725-2, EN 1676, EN 1706 |
Technological properties
| Property | ||
|---|---|---|
| Anodizing | decorative: not recommended | |
| Corrosion properties | general: good | |
| General machinability | after thermal treatment: acceptable | |
| Processing methods | permanent mould casting, sample taken from casting or cast on | |
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