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18ct Gold

18ct Gold

Cape Precious Metals manufactures gold to a purity of 99.99%.

Order Codes:

R

18ct Y Bench

Alloy Composition 75.2% AU (AG/CU)
Colour Light Yellow
Melting Range 960 – 990°C
Solders 18ct E,M & H YELLOW
Specific Gravity 15.96
Annealing Colour   Dull Cherry Red

Best used for

  • Bench Work
  • Casting
  • Rolling


Hints, Tips & Uses

  • General purpose yellow gold alloy.
  • Widely used by goldsmiths for all applications

18ct R Bench

Alloy Composition 75.2% AU (AG/CU)
Colour Red
Melting Range 890 – 895°C
Solders 18ct E,M & H RED
Specific Gravity 15.9
Annealing Colour   Cherry Red

Best used for

  • Bench Work
  • Casting


Hints, Tips & Uses

  • Do not anneal often as cracking can occur. Can be annealled in furnace at 650°C – the time depends on the size of the piece
  • Alternatively, it may be heated to cherry red and quenched from a black heat for maximum ductility

18ct W Nickel

Alloy Composition 75.2% AU (CU/NI/ZN)
Colour Grey / White
Melting Range 1050°C
Solders 18ct E,M & H WHITE
Specific Gravity 15.9
Annealing Colour   Cherry Red

Best used for

  • Bench Work
  • Casting
  • Rolling


Hints, Tips & Uses

  • General purpose white gold alloy
  • Cool metal slowly
  • This metal is magnetic, has good rolling properties & good for bangles

18ct W 10% Palladium

Alloy Composition 75,5% AU (AG/PD/CU)
Colour White
Melting Range 950°C
Solders 18ct E,M,H White
Specific Gravity 16.2
Annealing Colour   Cherry Red

Best used for

  • Bench Work
  • Casting


Hints, Tips & Uses

  • Alloy should be quenched for maximum ductility
  • Casting temperature: 1220°C
  • Must rhodium plate for brilliant white finish

18ct W 12% Palladium

Alloy Composition 75.2% AU (AG/PD/CU)
Colour White
Melting Range 960°C
Solders 18ct E,M & H WHITE
Specific Gravity 16.2
Annealing Colour   Cherry Red

Best used for

  • Bench Work
  • Casting


Hints, Tips & Uses

  • Alloy should be quenched for maximum ductility
  • High casting temperature = 1340°C
  • Must rhodium plate for brilliant white finish
  • Age hardenable alloy – heat to 450°C for 90 minutes

18ct W 12.5% Palladium

Alloy Composition 75.2% AU (AG/PD)
Colour White
Melting Range 960°C
Solders 18ct E,M & H WHITE
Specific Gravity 16.2
Annealing Colour   Cherry Red

Best used for

  • Bench Work
  • Rolling


Hints, Tips & Uses

  • General purpose white gold alloy
  • Metal has good setting properties
  • Alloy should be quenched for maximum ductility
  • Must rhodium plate for brilliant white finish

18ct W 13% Palladium

Alloy Composition 75.2% AU (PD/IND/COP)
Colour White
Melting Range 980°C
Solders 18ct E,M & H WHITE
Specific Gravity
Annealing Colour   Red

Best used for

  • Bench Work
  • Casting
  • Rolling


Hints, Tips & Uses

  • Melts and flows easily
  • Black once melted due to copper content
  • Rolls with a bit more resistance due to copper content
  • Polishes very easily

18ct W 16% Palladium

Alloy Composition 75.2% AU (AG/PD)
Colour White
Melting Range 1150°C
Solders 18ct E,M & H WHITE
Specific Gravity 16.3
Annealing Colour   Cherry Red

Best used for

  • Bench Work
  • Rolling


Hints, Tips & Uses

  • General all purpose white alloy with high ductility
  • Softer alloy which is good for setting
  • Must rhodium plate for brilliant white finish

18ct W Platinum & Palladium

Alloy Composition 75.2% AU (PT/PD)
Colour Superior White
Melting Range 1200°C
Solders 18ct E,M & H WHITE & 960
Specific Gravity 17.43
Annealing Colour   Dull Cherry Red

Best used for

  • Bench Work
  • Rolling


Hints, Tips & Uses

  • No age hardening needed
  • Frequent annealing allows for good rolling
  • Excellent properties for tension setting
  • If used for casting, use Phosphate Bond investment powder & centrifugal casting system

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