I-Beam Joint I-Beam Joint I-Beam Joint
Fabricated Beam Tube Joint Tube Joint
Channel Joint Channel Joint Box Joint
Assembly Methods
Almost all assembly methods used for wood, aluminium, steel or other materials can be adopted to assemble Dura
Profile
The following techniques should be followed:
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Punches work better with a slight sheer edge
Lag screws (lag bolts) are not recommended for fastening
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Router bits should be diamond-coated
Dura Profile
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Drilling speeds should take hole size and thickness into
Counter support is necessary when drilling hollow profiles
consideration
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A medium coarse grinding wheel is preferable to the finer
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Solvents, such as methylene chloride or acetone should be
grades.
used to prepare surface for bonding or coating.
Mechanical Properties Physical Properties Electrical Properties
Tensile Strength 290 – 760 MPa Relative Density 1.6 – 2.1 Electrical Strength at 23ºC 7 – 12 MV/m
Tensile Modulus 18 – 38 GPa Water Absorption 0.5% Comparative Tracking Index 480
Flexural Strength 250 – 750 MPa Barcol Hardness 46 – 60 Insulation Resistance 5 x 106 Ω
Flexural Modulus 14 – 42 GPa Specific Heat 1.5 KJ (kgK) Surface Resistivity 1013.6 Ω
Compressive Strength 125 – 380 MPa Thermal Conductivity 0.37 W/(mk) Volume Resistivity 1014.1 Ωcm
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Impact Strength, Charpy 100 – 300 KJ/m
2
Coefficient of Thermal Expansion1.3 x 10 5/K Power factor at I MHz 0.0127
Permittivity at I MHz 3.99
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