BRASS ALLOY B7
Stering silver 925
b7
Alloy
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B7
Alloy for high-flow silver, enhancing tarnish resistance.
Alloy for high-flow silver, enhancing tarnish resistance.
Alloy for high-flow silver, enhancing tarnish resistance.
BRASS ALLOY B7
Properties
- For decades, Oldmoon has improved alloy for standard and wide-range adaptable casting conditions for complex and luxury jewelry.
- All products are produced under a controlled close system process and quality assurance.
- Customers can be assured that our products contain no prohibited substances, such as nickel, lead, cadmium, and arsenic.
Casting conditions
Metal pouring temperature
1000-1180 °C
Crucible temperature
450-750 °C
Proportion of old scrap to new melt
50%
Crucible cleaning time
2-10 minutes (quick dip in water at 1 minute to prevent cracking for thin rings)
Melting point of silver
93% purity: 890 °C
95% purity: 910 °C
95% purity: 910 °C
Casting patterns
Casting thickness
Crucible temperature (°C)
Metal pouring temperature (°C)
< 0.5 mm
580-650
1,050-1,180
0.5-1.2 mm
550-600
1,000-1,050
> 1.2mm
450-580
980-1,020