The advantage of bronze is they don't rust and ye syou can pour cast iron into them so long as you have applied mould release (deltacast, microcollid)
Unlike some ingot moulds these have been designed with a good taper and smooth inside walls to allow easy release of ingots.
The small handle is for tipping out using tongs. Prior to use the ingot mould can be coated with delta cast mould release or mould blacking
For making ingots after melting down scrap or when too much metal has been smelted.
Ingot moulds should be pre-heated to drive off moisture prior to pouring molten metal into them.
Ingot Mould Size External with handle
L 170 x W 110 x H 27mm Ingot
Total volume 176ml/cc (For comparison would hold 3.4 kg of gold or 1.572 Kg of copper)
Volume per ingot bay 44ml/cc (For comparison would hold 850 grams of gold or 393 grams of copper)