G.AL® C250 ELOX PLUS – Precision‑Milled Aluminum Plate for Superior Anodizing

Rolling ingots are used for the production of G.AL® C250 ELOXPLUS plates. The chemical composition of these ingots is considerably limited in accordance with the GLEICH factory standard and extensive cleaning of the melt and specific casting parameters are required. Together with the specially-developed parameters of the subsequent heat treatment, Gleich produces aluminum plates which have excellent characteristics for anodizing and hard anodizing and thus the fulfill the highest technical and optical applications. As with G.AL® C250, G.AL® C250 ELOX PLUS is a precision cast plate, precision machined on both sides with protective foil.

Properties

General

Property	Temperature	Value
Density	23.0 °C	2.66 g/cm³
Surface roughness		0.4 μm

Dimension

Property	Value
Width	1520 mm
Dimensions	Standard stock sizes: 1520mmx3020mm and 10-40mm in thickness

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	70 GPa
Elongation	23.0 °C	10 - 15 %
Hardness, HBW	23.0 °C	68 - 73 [-]	Test method: 2.5/62.5
Tensile strength	23.0 °C	230 - 260 MPa
Yield strength Rp0.2	23.0 °C	110 - 130 MPa

Thermal

Property	Temperature	Value
Coefficient of thermal expansion	23.0 °C	2.36E-5 1/K
Specific heat capacity	23.0 °C	900 J/(kg·K)
Thermal conductivity	23.0 °C	110 - 130 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	23.0 °C	1.60E+7 - 1.80E+7 S/m

Technological properties

Property
Other	Non heat treatable alloy
Processing history	Temper: O3, homogenized and stress relieved

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Metal