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| Application |
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Recommendation |
| Lens Blocking |
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MCP 47, 58, 61, 70 |
| Radiation Shielding |
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MCP 69, 96 |
| Fusible Core Technology |
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MCP 58, 96, 137, 187, 200 |
| Workholding |
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MCP 137, 220 |
| Tube & Section Bending |
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MCP 70, 79, 124 |
| Sheet Metal Forming |
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MCP 137 |
| Fusible Safety Devices |
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Specific to case |
| Moulds & Dies |
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MCP 137, 150, 200 |
| Pattern Making &
Copying |
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MCP 137, 150, 200 |
| Proof Casting |
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MCP 124, 150 |
| Specialised Soldering |
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Specific to case |
| Casting & Pewterware |
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Specific to case |
Special Properties
| Except for MCP 187 and MCP 200, the standard alloys are based
on bismuth, a metal with the highly unusual property of expanding
(by rather more than 3% of volume) when it solidifies. Naturally,
the effect is less noticeable when the bismuth is alloyed with
other metals, which all have the opposite tendency. In many cases
the alloy occupies a slightly larger volume than the melt from
which it has solidified, but there are cases where the change
is effectively nil. For the most part, bismuth-based fusible alloys
continue to grow slightly for some time after casting, sometimes
after an initial period of shrinking. This often valuable property
is caused by slow changes in the crystal structure within the
casting - in fact, by a process of annealing. |
Technical Data
| The 'MCP' fusible rage contains a basic core of the fourteen
'standard' alloys mentioned in the Table above, from which it
is almost always possible to select a type suitable for a particular
purpose. A Technical Information Leaflet is available for each
of the fourteen, giving details of the physical properties of
interest in its typical applications. |
Product Information & Safety Data
| The complete 'MCP' range contains about 130 alloys,
according to composition to groups with common health, safety
and environmental features. None of the alloys is classified as
either 'dangerous for supply' or 'dangerous for carriage', and
all are safe for use when practices recommended by MCP are followed. |
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