Brass Alloy 100g

Brass drops for casting, containing 82% Cu. Made in Italy with a special anti tarnish property.

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.^[1] It is a substitute alloy: atoms of the two constituents may replace each other within the same crystal structure. Bronze is an alloy also containing copper, but instead of zinc it has tin

Brass is used for decoration for its bright gold-like appearance; for applications where low friction is required such as locks, gears, bearings, doorknobs, ammunition casings and valves; for plumbing and electrical applications; and extensively in brass musical instruments such as horns and bells where a combination of high workability (historically with hand tools) and durability is desired. It is also used in zippers. Brass is often used in situations in which it is important that sparks not be struck, such as in fittings and tools used near flammable or explosive materials

GENERAL INFORMATION

Carats: NONE – to be used without gold

Colour: yellow

colour coordinates: L*=86.5 a*=2.2 b*=18.1

Advised use: casting

Density: 8,34 g/cm³

Hardness (as cast): 153 HV

Hardness (after annealing): 150 HV

DIRECTIONS FOR SUGGESTED USE

Melting temperature (Solidus – Liquidus): 832 – 930 °C

Casting temperature:

100 °C over its Liquidus temperature to cast with centrifugal machines and vacuum machines

with controlled atmosphere.

140 °C over its Liquidus temperature to cast in outdoor cylinders with vacuum.

Cylinders temperature: from 550 °C to 650 °C depending on the machine and

objects dimensions.

Cooling casted objects: in water after 5 minutes.

Cooling casted objects (with stones): in water after 30/40 minutes.

Annealing: 660 °C for 20 minutes followed by a quick cooling in hot

water (40 °C min.)