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9ct Gold

9ct Gold

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

R

9ct Y Bench

Alloy Composition 37.6% AU (AG/CU/ZN)
Colour Light Yellow
Melting Range 880 – 900°C
Solders 9ct EE,E,M & H YELLOW
Specific Gravity 11.2
Annealing Colour Dull Cherry Red

 

Best used for

  • Bench Work
  • Rolling


Hints, Tips & Uses

  • General purpose yellow gold alloy.
  • Good setting properties
  • Due to the presence of zinc, this alloy may not perform satisfactory when enamelled
  • Can be quenched for maximum ductility
  • When melting, use a soft flame to avoid zinc burnout which will cause discolouration (red) and cracking

9ct Y Casting

Alloy Composition 37.6% AU (AG/CU/ZN/SI)
Colour Pale Yellow
Melting Range 980 – 1020°C
Solders 9ct E,M & H YELLOW
Specific Gravity 12.88
Annealing Colour  

 

Best used for

  • Casting


Hints, Tips & Uses

  • Versatile casting alloy with good fluidity and form filling properties
  • Due to the presence of zinc, this alloy may not perform satisfactory when enamelled
  • If used for bench work, the metal cracks & becomes hard

9ct W Nickel

Alloy Composition 37.6% AU (AG/NI/CU/ZN)
Colour Bright White
Melting Range 980 – 1040°C
Solders 9ct M WHITE
Specific Gravity 13.78
Annealing Colour Cherry Red

 

Best used for

  • Bench Work
  • Casting
  • Rolling


Hints, Tips & Uses

  • Nickel content conforms to international standards and is magnetic
  • Do not use for piercing components
  • Excellent rolling properties and is good for bangles.
  • Boric acid flux should be used to keep the metal clean during the melting process. The molten metal should be mixed well with a stirring rod before pouring to assure a good mix. Remove the ingot from the mold & allow to air cool (which will allow the alloy to be much softer) – do not quench. Soak in a hot pickling solution to remove surface oxides

9ct W 7% Palladium

Alloy Composition 37.6% AU (AG/PD/ZN)
Colour Dull White
Melting Range 980 – 1050°C
Solders 9ct E,M WHITE & 960
Specific Gravity 13.7
Annealing Colour Dull White

 

Best used for

  • Bench Work
  • Casting
  • Rolling


Hints, Tips & Uses

  • Versatile metal alloy, more economical than 19% Palladium alloy
  • Use a softer flame than 19% Pd alloy
  • Rhodium plate for bright white colour
  • Casting temperature: 1020°C
  • Flask temperature: 450-700 °C

9ct W 10% Palladium

Alloy Composition 37.6% AU (AG/PD/CU)
Solders 9ct E, M WHITE
Specific Gravity 14.1

 

Best used for

  • Bench Work
  • Casting

9ct W 15% Palladium

Alloy Composition 37.6% AU (AG/PD/CU)
Solders 9ct E, M WHITE
Specific Gravity 14.1

Best used for

  • Bench Work
  • Casting

9ct W 16% Palladium

Alloy Composition 37.6% AU (AG/PD)
Melting Range 1480°C
Solders 9ct E, M WHITE
Specific Gravity 14.1

 

Best used for

  • Bench Work
  • Casting
  • Rolling

9ct W 19% Palladium

Alloy Composition 37.6% AU (AG/PD/CU)
Colour Grey / White
Melting Range 1050°C
Solders 9ct E,M WHITE & 960
Specific Gravity 14.21
Annealing Colour Dull Cherry Red

 

Best used for

  • Bench Work


Hints, Tips & Uses

  • Bench work, rolling & setting metal
  • Deoxidize thoroughly – use reducing flame to prevent blistering during annealing
  • Can rhodium plate for brilliant white finish

9ct W Nickel Free

Alloy Composition 37.6% AU (AG/CU/ZN)
Colour Straw White
Melting Range 1110 °C
Solders 9ct M WHITE
Specific Gravity 12.4
Annealing Colour Cherry Red

 

Best used for

  • Casting


Hints, Tips & Uses

  • Good casting properties
  • This alloy does not contain Nickel or Palladium
  • Rhodium plate for bright white colour
  • Soft alloy, suitable for handwork & casting

9ct R

Alloy Composition 37.6% AU (AG/CU)
Colour Red
Melting Range 900 – 960°C
Solders 9ct E,M & H RED
Specific Gravity 11.1
Annealing Colour Cherry Red

 

Best used for

  • Bench Work
  • Casting


Hints, Tips & Uses

  • General purpose red gold alloy.
  • Work hardens quickly due to high copper content
  • Use soft flame when annealing and roll gently
  • “Air cool” – no quenching
  • This alloy is age-hardenable

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