High-Strength T4 Heat‑Treated Grade 3.1371 G‑AlCu4TiMg Alloy – DIN 1725‑2 Specification
G-AlCu4TiMg - solidifies in an wide range of temperature - complicated casting - application in part hardend or warm hardend state - applicable for cast pieces, with high demands to strength (warm hardened) and highest toughness (cold hardened) application: - wear resistant construction parts in automobile, machine and aircraft industry
Properties
General
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Density | 2.75 g/cm³ | T4 | EN 1706 | |
20.0 °C | 2.75 g/cm³ | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
Mechanical
| Property | Temperature | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|---|
Bending Fatigue Strength | 80.0 - 110.0 MPa | T4 | EN 1706 | ||
Elastic modulus | 72.0 GPa | T4 | EN 1706 | ||
20.0 °C | 70.6 GPa | T4 | WL 3.1854, DIN 1725-2 | ||
20.0 °C | 72.0 GPa | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
Elongation | 5.0 % | T4 | EN 1706 | A50 | |
8.0 % | T4 | EN 1706 | A50 | ||
20.0 °C | 3.0 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 4.0 % | T4 | WL 3.1854, DIN 1725-2 | ||
20.0 °C | 5.0 - 10.0 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 5.0 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 5.0 - 15.0 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 6.0 % | T4 | WL 3.1854, DIN 1725-2 | ||
20.0 °C | 8.0 - 18.0 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
Hardness, Brinell | 90.0 [-] | T4 | EN 1706 | ||
20.0 °C | 85.0 [-] | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 90.0 - 120.0 [-] | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 90.0 [-] | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 90.0 - 115.0 [-] | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 95.0 - 115.0 [-] | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
Poisson's ratio | 0.33 [-] | Typical for Cast 2xx.x Series Aluminium | |||
Tensile strength | 300.0 MPa | T4 | EN 1706 | ||
320.0 MPa | T4 | EN 1706 | |||
20.0 °C | 240.0 MPa | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 270.0 MPa | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 300.0 - 400.0 MPa | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 300.0 MPa | T4 | WL 3.1854, DIN 1725-2 | ||
20.0 °C | 320.0 MPa | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | ||
20.0 °C | 320.0 - 420.0 MPa | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
Thermal
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Coefficient of thermal expansion | 20 °C | 2.3e-05 1/K | T4 | EN 1706 |
100 °C | 2.3e-05 1/K | T4 | EN 1706 | |
200.0 °C | 2.4e-05 1/K | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | |
Melting point | 540.0 - 640.0 °C | T4 | EN 1706 | |
Specific heat capacity | 910.0 J/(kg·K) | T4 | EN 1706 | |
20.0 °C | 910.0 J/(kg·K) | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | |
Thermal conductivity | 120.0 - 150.0 W/(m·K) | T4 | EN 1706 | |
20.0 °C | 110.0 - 140.0 W/(m·K) | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | |
20.0 °C | 126.0 - 147.0 W/(m·K) | T4 | WL 3.1854, DIN 1725-2 |
Electrical
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Electrical conductivity | 16000000.0 - 23000000.0 S/m | T4 | EN 1706 | |
20.0 °C | 16000000.0 - 20000000.0 S/m | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | |
20.0 °C | 17000000.0 - 19000000.0 S/m | T4 | WL 3.1854, DIN 1725-2 | |
Electrical resistivity | 4.35e-08 - 6.25e-08 Ω·m | T4 | EN 1706 |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Aluminium | 93.4 % | T4 | WL 3.1854, DIN 1725-2 |
93.5 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 | |
Copper | 4.2 - 4.9 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
4.2 - 5.0 % | T4 | WL 3.1854, DIN 1725-2 | |
Iron | 0.18 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
0.18 % | T4 | EN 1706 | |
0.35 % | T4 | WL 3.1854, DIN 1725-2 | |
Magnesium | 0.15 - 0.3 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
0.15 - 0.35 % | T4 | WL 3.1854, DIN 1725-2 | |
Manganese | 0.001 - 0.5 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
0.1 % | T4 | WL 3.1854, DIN 1725-2 | |
Nickel | 0.03 | T4 | WL 3.1854, DIN 1725-2 |
Silicon | 0.18 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
0.3 % | T4 | WL 3.1854, DIN 1725-2 | |
Titanium | 0.15 - 0.3 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
0.15 - 0.25 % | T4 | WL 3.1854, DIN 1725-2 | |
Zinc | 0.07 % | T4 | DIN 1725-2, EN 1676, EN 1706, WL 3.1854 |
0.1 % | T4 | WL 3.1854, DIN 1725-2 |
Technological properties
| Property | ||
|---|---|---|
| Anodizing | decorative: acceptable | |
| Corrosion properties | general: not sufficient | |
| General machinability | as cast: excellent | |
| Processing methods | investment casting, sample taken from casting | |
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