MasterWeld MW-4018 AlSi7Mg is a modified 4010 alloy (alloy 4008) with low levels of impurities, specially designed for joining or repairing of 7% Si aluminium cast components like 356.0, A356.0 and A357.0. The mechanical properties can be increased by heat treatment. Thorough cleaning of the workpiece bevels is necessary prior to welding.
Typical composition in %
- Si 6,50 - 7,50
- Fe < 0,20
- Cu < 0,05
- Mn < 0,10
- Mg 0,50 - 0,80
- Zn < 0,10
- Be < 0,0003
- Ti 0,10 - 0,20
- Others < 0,05
- Others total < 0,15
Physical properties of pure weld metal (Approx. values)
- 0,2 % yield strength Rp0,2 [MPa] F: 80, T6: 250
- Tensile strength Rm [MPa] F: 140, T6: 310
- Elongation A5 (Lo=5d0) [%] F: 2, T6: 4
- Test temperature [°C] 20