| | C250 Aluminium Cast Machined Tooling Plate  | 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 C250 Stock Range Typical Values of Aluminium Cast Plate C250 Mechanical Properties | Ultimate Strength Rm (MPa) | 275 | Yield Strength Rp0.2 (MPa) | 125 | Module of Elasticity (GPa) | 70 | 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 (m/Ç m) | 16.2 | Specific Heat 25 - 100 0c (J/kg K) | 900 | Density (g/cm3) | 2.66 | Chemical Composition | Magnesium | Manganese | Others | Aluminium | 4 - 5 % | < 1 % | 1.5 % | Balance |
Tolerances | Flatness | 6mm - 1/2” thick | > 1/2” | +/- 0.4mm 5mm thick +/-0.8mm | +/- 0.13mm | Thickness | +/- 0.1mm | Surface Roughness | better than 0.40µm |
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