JA7 is an excellent low cost alloy where relatively high weight is not a problem. It is suitable for larger objects over 50mm wide and over 5mm thick.
This is a lead based low cost casting alloy. JA7 is a heavy metal suitable for larger objects over 50mm wide and 5mm thick. The realease agent to use is graphite. The casting range is 310-360Â°C. The sticks average 300gm in weight and are sold on a weight basis. Approximate average content : Tin 0-45% Antimony 0-10% Cadmium 0-1% plus Lead.
Please Note: While melting alloy metals is a simple process, it should never be attempted without suitable protective safety equipment such as goggles and heat proof gloves. It is not something that children should ever attempt without very adequate adult supervison.