C250 is manufactured from a 5083 type alloy, and is machined to industry standard thickness and flatness tolerances and polycoated both sides. Special casting and heat treatment techniques makes this plate extremely stress free whilst retaining 85 -90% of the strength of rolled plate. It will retain its flatness and dimensional tolerances after machining or even after repeated heating and cooling. Like rolled 5083, C250 has excellent machining, welding and anodising properties. However, we recommend that you do not etch prior to anodising as this adversely affects the grain structure on the surface of the plate.
Metalfast stock a full range of metric and imperial C250 Plates
from 5mm - 106mm
Typical Values of Aluminium Cast Plate C250
Mechanical Properties |
|
Tensile Strength Rm (MPa) |
Typical 275 |
Yield Strength Rp0.2 (MPa) |
> 125 |
Modulus of Elasticity (GPa) |
~ 70000 |
Elongation A5 (%) |
> 15 |
Brinell Hardness HBS 2.5/62.5/30 |
> 75 |
Physical Properties |
|
Coefficient of Thermal Expansion (10-6/K) |
23.3 |
Thermal Conductivity (W/mK) |
110 - 130 |
Electrical Conductivity (MS/m) |
16.2 |
Specific Heat Capacity (25 - 100°c) (J/kg K) |
900 |
Density (g/cm3) |
2.66 |
Chemical Arguement |
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Magnesium |
Manganese |
Others |
Aluminium |
4 - 5% |
< 1 |
1.5 |
Balance |
Tolerances |
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5mm thick |
6mm - 1/2" thick |
> 1/2" thick |
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Flatness |
+/- 0.8mm |
+/- 0.4mm |
+/- 0.13mm |
|
Thickness |
+/- 0.1mm |
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Surface Roughness |
better than 0.40μm |
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