ACP 7(R)
Excellent machining properties with high demands on mechanical properties and material stability.
The precision surface machined plate ACP 7 or ACP 7R, the latter with a sawn surface, is particularly suitable for applications with high demands on mechanical properties in combination with excellent machining properties. As the world‘s leading manufacturer of aluminium cast plates, with ACP 7 we have succeeded in achieving outstanding cast plate quality in the EN AW 7000 alloy range.
Technical data / specific properties
Chemical Composition
EN AW-7021 (Al Zn5.5Mg1.5), according to DIN EN 573-3
Material Properties
Machinability
very good (HSC/HPC)
Dimensional Stability
very good
Polishing
very good
Weldability (TIG, MIG)
good
Anodising Properties
acceptable
Corrosion Resistance
acceptable
Typical Mechanical Properties
Tensile Strength Rm
330 – 360 MPa (N/mm2)
0.2 % Yield Strength Rp 0.2
300 – 340 MPa (N/mm2)
Elongation A
1 – 2 %
Brinell Hardness
121 HB
Typical Physical Properties
Density
2.78 g/cm3
Thermal Conductivity
150 W/(mK)
Electrical Conductivity
19 – 23 MS/m (m/Ω mm2)
Modulus of Elasticity
~72,000 N/mm2
Coefficient of Thermal Expansion
23.7 * 10-6/K-1
ACP 7 Standard Sizes
Thickness
10 – 200 mm
Width
1520 mm
Length
3020 mm
ACP 7 Tolerances
Surface Finish Ra
≤ 0.4 µm
Tolerance in Thickness
+/- 0.1 mm
Flatness
10 – 12 mm thickness: on request
>12 – 200 mm thickness: ≤ 0.13 mm
(Linear measured section 1 m)
Tolerance in Width for Plates
0/+10 mm
Tolerance in Length for Plates
0/+15 mm
Tolerance (L/W) for cur pieces
DIN ISO 2768-m
(Linear measured section 1 m)
Other tolerances on request.
ACP 7R Standard Sizes
Thickness
15 – 500 mm
Width
1520 – 2020 mm
Length
3020 – 4020 mm
Standard plate formats:
≥ 15 – 400 mm x 1520 mm x 3020 mm
≥ 50 – 500 mm x 2020 mm x 4020 mm
Other dimensions on request.
ACP 7R Tolerances
Surface
sawn on all sides
Tolerance in Thickness
0/+3 mm
Tolerance in Width for Plates
0/+10 mm
Tolerance in Length for Plates
0/+15 mm
Tolerance (L/W) for cut pieces
0/+3 mm
(Linear measured section 1 m)
Other tolerances on request.
