77 Non-Cracking Cast Iron Welding Rod | 72 Burnt Cast Iron Welding Rod | 75 Nickel Iron Welding Rod for Malleable, Ductile, and Nodular Cast Irons | SSF-6 High Strength 56% Silver Solder | |
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Sizes Available (in.) | 5/32in, 1/8in, 3/32in | 5/32in, 1/8in, 3/32in | 3/32in, 1/8in, 5/32in | 1/16in |
Sizes Available (mm) | 3.96mm, 3.17mm, 2.38mm | 3.96mm, 3.17mm, 2.38mm | 2.38mm, 3.17mm, 3.96mm | 1.58mm |
Arc - TIG - Braze | Arc - TIG | Arc - TIG | Arc - TIG | Braze |
Works on engine blocks? | Yes | No | No | Yes |
Works on large cast iron holes? | Yes | Yes | Yes | No |
Joins cast iron to steel? | Yes | Yes | Yes | No |
Joins cast iron to metals other than steel? | No | No | No | Yes |
Works on exhaust manifolds, woodstoves, or other burnt cast iron? | Good | Great | No | Good |
Works on thin cast iron? | Yes | Yes | Yes | Yes, even very thin |
Color match? | Good | Good | Good | No |
All position? | Yes | Yes | Yes | Yes |
Machineable? | Yes | No | Yes | Yes |
Paintable? | Yes | Yes | Yes | Yes |
Works over existing welds? | Fair-- better on unwelded surface | Fair | Over nickel, yes | Great |
Crack resistant? | Yes | No | No | Yes |
Depth to bevel cracks | 3/4 through | 3/4 through | 3/4 through | 1/2 through |