Gold
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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
• RollingHints, 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
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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
• CastingHints, 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
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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
• RollingHints, 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
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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
• RollingHints, 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
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9ct W 10% Palladium
Alloy Composition 37.6% AU(AG/PD/CU/ZN) Colour Melting Range 1020°C Solders 9ct E, M WHITE Specific Gravity 13.8 Annealing Colour Cherry Red
Best used for
• Bench Work
• Casting
• Rolling
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9ct W 15% Palladium
Alloy Composition 37.6% AU (AG/PD/CU) Colour Melting Range Solders 9ct E, M WHITE Specific Gravity 14.1 Annealing Colour
Best used for
• Bench Work
• Casting
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9ct W 16% Palladium
Alloy Composition 37.6% AU (AG/PD) Colour Melting Range 1480°C Solders 9ct E, M WHITE Specific Gravity 14.1 Annealing Colour
Best used for
• Bench Work
• Casting
• Rolling
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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 WorkHints, Tips & Uses
• Bench work, rolling & setting metal
• Deoxidize thoroughly – use reducing flame to prevent blistering during annealing
• Can rhodium plate for brilliant white finish
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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
• CastingHints, 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
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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
• CastingHints, 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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14ct Y Cast
Alloy Composition 58.4% AU (AG/CU/ZN/SI) Colour Pale Yellow Melting Range 930 – 1020°C Solders 14 ct E,M & H YELLOW Specific Gravity 14.3 Annealing Colour
Best used for
• CastingHints, Tips & Uses
• Specialist casting alloy
• Easy finish
• Good fluidity and form filling properties
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14ct Y Bench
Alloy Composition 58.4% AU (AG/CU/ZN) Colour Bright Yellow Melting Range 850 – 920°C Solders 14 ct E,M & H YELLOW Specific Gravity 14.3 Annealing Colour Dark Red
Best used for
• Bench WorkHints, Tips & Uses
• Soft metal that rolls well and is good for bench work
• Work hardens slowly
• Do not melt too often or at too high a temperature – this will cause cracking & the metal to become red and brittle due to zinc burnout
• Polishes well and has a good finish
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14ct W 10% Palladium
Alloy Composition 58.4% AU (AG/PD) Colour Melting Range 1130°C Solders Specific Gravity 15.80 Annealing Colour Cherry Red
Best used for
• Bench Work
• Casting
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14ct W 18.5% Palladium
Alloy Composition 58.4% AU (AG/PD) Colour Good White Melting Range 1095 – 1150°C Solders 18ct E,M,H WHITE or 960 Specific Gravity 16.1 Annealing Colour Cherry Red
Best used for
• Bench WorkHints, Tips & Uses
• Excellent bench work metal. Anneal well & often
• Soft alloy due to high palladium content
• Can be used for centrifugal casting
• Rhodium plating optional
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14ct W Nickel
Alloy Composition 58.4% AU (NI/CU/ZN) Colour White Melting Range 1220°C Solders 18ct E,M WHITE or 960 Specific Gravity 14.89 Annealing Colour Cherry Red
Best used for
• Bench Work
• Casting
• RollingHints, Tips & Uses
• Multi purpose Nickel alloy, which is magnetic
• Always ensure Nickel is mixed thoroughly
• Plasticity and workability is good for bench and rolling when the metal is annealed and allowed to cool slowly
• The Nickel content conforms to International standards
• Anneal & air cool slowly
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14ct R
Alloy Composition 58.4% AU (AG/CU) Colour Red Melting Range 920°C Solders 9ct or 18ct E,M RED Specific Gravity 15.1 Annealing Colour Red
Best used for
• Bench WorkHints, Tips & Uses
• Anneal as little as possible and allow to air cool
• This metal work hardens quickly
• This metal is difficult to roll.
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18ct Y
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
• RollingHints, Tips & Uses
• General purpose yellow gold alloy.
• Widely used by goldsmiths for all applications
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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
• CastingHints, 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
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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
• RollingHints, Tips & Uses
• General purpose white gold alloy
• Cool metal slowly
• This metal is magnetic, has good rolling properties & good for bangles
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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
• CastingHints, Tips & Uses
• Alloy should be quenched for maximum ductility
• Casting temperature: 1220°C
• Must rhodium plate for brilliant white finish
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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
• CastingHints, 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
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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
• RollingHints, 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
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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
• RollingHints, 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
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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
• RollingHints, Tips & Uses
• General all purpose white alloy with high ductility
• Softer alloy which is good for setting
• Must rhodium plate for brilliant white finish
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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
• RollingHints, 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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22ct Y General Purpose
Alloy Composition 91.67% AU (AG/CU) Colour Yellow Melting Range 1052 – 1063°C Solders 18ct E,M & H YELLOW Specific Gravity 18 Annealing Colour Dull Red
Best used for
• Bench WorkHints, Tips & Uses
• General all purpose yellow alloy
• Softest alloy in gold-copper or silver series