Choosing a Profile
Standards and Basic Information
Material name according to DIN EN 573-3
Material abbreviation according to DIN 1725-1
Material number
14
2
D
W
The profiles are made from extruded aluminium and
are available in a standard length of 5100 mm. They
can also be cut to length. Lengths in excess of the
standard length are available on request. All construction
profiles are pretreated with the E6 chemical
process, which removes grooves and scratches
in the surface. The profiles are anodised with a coating
that is approx. 10 μm thick and with colour C0
(natural colour). The coating is resistant to acids and
bases (alkali bases up to pH 9.5 and acids up to pH 4).
Profile structures are typically suitable for indoor
use at temperatures from +10° to +60° C and a
humidity of 30 to 60%. Low temperatures down to
-20° C are possible on request. Temperatures above
80° C are only briefly permissible for most plastics.
Ambient temperatures higher than 150° C are only
permissible for aluminium base structures after
testing. The values shown in the table below are the
highest permissible deviations as specified in the
standard.
Materials of mk Profiles
According to DIN EN 755-2
mk generally uses two different materials for its
profile technology. AlMgSi 0.5 F25 is used for Series
25 and 40, and AlMgSi 0.7 F27 is primarily used for
Series 50 and 60, which exhibits 7% higher strength.
Squareness Tolerance*
EN AW 6063 T66
AlMg0.7Si
AlMgSi 0.5 F25
3.3206.72
EN AW 6005A T6
AlSiMg(A)
AlMgSi 0.7 F27
3.3210.71
Density r g/cm³ 2.7 2.7
Elastic modulus E N/mm² 70,000 70,000
Tensile strength Rm N/mm² 245 270
0.2% offset yield stress Rp0.2 N/mm² 200 215
Elongation at break A5 % 8 8
Brinell hardness HB 80 85
Coefficient of thermal expansion
21.8*6
(up to 20° C/up to 293° K)
1/K 10-a 23.2*10-6
(20°–100°C/293°–373°K)
21.8*10-6
23.2*10-6
Thermal conductivity l W/(m*K) 200–220 180–220
Electrical conductivity
(20° C/293° K) k m/(W*mm²) 28–34 26–32
Width W (mm)
range Squareness tolerance
for cross section D (mm)
over up to
— 40 0.20
40 60 0.30
60 90 0.40
90 120 0.45
120 150 0.55
150 180 0.65
180 210 0.70
Profiles
Profiles may exhibit web marks.
Tolerances for flatness and contour
deviations available on request.