AluminiumBronze

= Kinds of Copper alloys *

• http://www.metalreference.com/Forms_Copper_Alloy.html
• Lets make C62500
  • https://alloys.copper.org/alloy/C62500

Composition

• Fe: 3.5 - 5.5 %
• Al : 12.5-13.5 %
• Mn: 0-2 %
• Cu : rest
• Melting point
  • Liquidus - 1051 C
  • Solidus - 1047 C
• Density : 7.2 g/cm3

Recipes

For 500 cm3 / 3600 g

• Fe : 4% : 144 g
• Al: 13 % : 468 g
• Cu : 83% : 2988

For 400 cm3 / 2880 g

• Fe : 4% : 115 g
• Al: 13 % : 374 g
• Cu : 83% : 2391 g

Preparation protocol

• This is not yet tested : treat as hypothesis
• As we will be using the 500ml graphite crucible for the first time, preheat first to 200 - 300 C, make sure it is stable and dry

Order to actions

1. Fe, in as fine as possible form in the crucible
2. Al
3. Borax
4. Wait for it to melt. We expect Iron to dissolve in molten Al
5. Stir, check for solid Fe
6. Add Cu
7. More borax if needed
8. heat up to 1200 C, max the oven can do. We want to be well above melting temperature, so we have sufficient time to pour before it starts solidifying
9. Pour in stailess steel cupcake forms, to form ingots small enough to fit in the crucible