EN 1706 Grade AC-21200 T4 Aluminium Alloy – Properties & Applications
Aluminium casting alloy (sand casting, permanent mould casting)
Properties
General
| Property | Value | Comment |
|---|---|---|
Density | 2.75 - 2.8 g/cm³ | Typical for Cast 2xx.x Series Aluminium |
Mechanical
| Property | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|
Bending Fatigue Strength | 80.0 - 110.0 MPa | T4 | EN 1706 | Casting | |
Elastic modulus | 72.0 GPa | Typical for Cast 2xx.x Series Aluminium | |||
Hardness, Brinell | 100.0 [-] | T4 | EN 1706 | Casting | |
110.0 [-] | T4 | EN 1706 | Casting | ||
Poisson's ratio | 0.33 [-] | Typical for Cast 2xx.x Series Aluminium | |||
Tensile strength | 330.0 MPa | T4 | EN 1706 | Casting | |
400.0 MPa | T4 | EN 1706 | Casting |
Thermal
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
Coefficient of thermal expansion | 20 °C | 2.3e-05 1/K | T4 | EN 1706 | Casting | |
100 °C | 2.3e-05 1/K | T4 | EN 1706 | Casting | ||
Melting point | 510.0 - 790.0 °C | Typical for Cast 2xx.x Series Aluminium | ||||
Specific heat capacity | 875.0 - 963.0 J/(kg·K) | Typical for Cast 2xx.x Series Aluminium | ||||
Thermal conductivity | 120.0 - 150.0 W/(m·K) | T4 | EN 1706 | Casting |
Electrical
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
Electrical conductivity | 16000000.0 - 23000000.0 S/m | T4 | EN 1706 | Casting |
Electrical resistivity | 4.34e-08 - 6.25e-08 Ω·m | T4 | EN 1706 | Casting |
Chemical properties
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
Aluminium | 93.29 % | T4 | EN 1706 | |
Copper | 4.0 - 5.0 % | T4 | EN 1706 | Casting |
Iron | 0.2 % | T4 | EN 1706 | |
0.20 % | T4 | EN 1706 | Casting | |
Lead | 0.03 % | T4 | EN 1706 | Casting |
Magnesium | 0.15 - 0.5 % | T4 | EN 1706 | Casting |
Manganese | 0.2 - 0.5 % | T4 | EN 1706 | Casting |
Nickel | 0.05 % | T4 | EN 1706 | Casting |
Silicon | 0.1 % | T4 | EN 1706 | Casting |
Tin | 0.03 % | T4 | EN 1706 | Casting |
Titanium | 0.1 % | T4 | EN 1706 | Casting |
Zinc | 0.1 % | T4 | EN 1706 | Casting |
Technological properties
| Property | ||
|---|---|---|
| Anodizing | decorative: acceptable | |
| Corrosion properties | general: not sufficient | |
| General machinability | after thermal treatment: excellent | |
| Processing methods | permanent mould casting, separately cast test sample | |
Metal
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