Crafts
In Senra we manufacture different pewter alloys, among others, mainly for the production of decorative objects.
These alloys are processed by casting, forging, trimming, spinning, rolling, engraving and centrifugal machines. According to the products to be made, such as emblems, candlesticks, replicas, figures, brooches and chains.
Centrifugal cast alloys, manufactured by Senra, guarantee the following features:
- Correct filling of the pieces
- Good fluidity of the metal
- High surface quality outside the molds
- Low porosity
- Increased mold life
Alloy | Composition (mass %) | Casting temperature | |||
---|---|---|---|---|---|
Sn | Cu | Pb | Sb | ||
Senra P5 | 88,75 | 0,5 | 4,75 | 6 | 280-300ºC |
Senra A3 | 20 | – | 76 | 4 | 300-340ºC |
Senra A5 | 36,8 | – | 60,25 | 2,95 | 300-340ºC |
Senra Supreme | resto | 0,5-0,6 | 4 | 6,3-6,5 | 280-320ºC |
Senra P 95 | 96,2 | 0,6 | – | 3,2 | 260-290ºC |