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Weldability and Joinability of Common Materials

Material
Cast iron 7 10 1 1 3 1 7
Carbon Steel,
low-alloy steel
10 10 7 10 10 3 7
Stainless steel 10 7 7 10 10 5 7
Aluminum 7 7 7 7 7 1 10
Magnesium 7 7 7 7 7 1 10
Copper,
Copper alloys
7 7 7 7 10 10 7
Nickel,
Nickel alloys
10 7 7 10 10 5 7
Titanium 7 1 7 7 3 1 7
Lead 7 7 1 3 1 10 10
Zinc 7 7 1 3 1 7 10
Thermoplastics 10* 10** 1 7*** 1 1 7
Thermosets 1 1 1 1 1 1 7
Elastomers 1 1 1 1 1 1 10
Ceramics 1 1 7 1 1 1 10
Dissimilar metals 3 3 7 3 3 - 7 N/A 10
 
Note: 10 = Execllent, 5 = Fair, 1 = Seldom/never used.
        * : Heated tool; ** : Hot gas; *** : Induction.