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Contraction (Shrinkage) Rules
NORMAL CONTRACTION FOR WOOD PATTERNS
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Cast
Iron
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...1
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8
|
|
|
1000
|
|
Model No.
|
|
Steel & Brass
|
...1
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17
|
500mm -3-
Contraction 1%, 1.5%, 2%
|
501 D
|
|
1000
|
1000mm -3-
Contraction 1%, 1.5%, 2%
|
501 F
|
|
Aluminium
|
...1
|
13
|
500mm -4-
Contraction 1.2%, 1.5%, 1.8%, 3%
|
502 D
|
|
1000
|
1000mm -4-
Contraction 1.2%, 1.5%, 1.8%, 3%
|
502 F
|
|
C.I.Malleable Iron
|
...1
|
10
|
500mm Single
Contraction 2.5%
|
503 D
|
|
1000
|
500mm Single
Contraction 1%
|
601 D
|
|
Steel (Stainless)
|
...1
|
20
|
1000mm Single
Contraction 1%
|
601 F
|
|
1000
|
500mm Single
Contraction 1.5%
|
602 D
|
|
Manganese
|
...1
|
25
|
1000mm Single
Contraction 1.5%
|
602 F
|
|
1000
|
500mm Single
Contraction 1.8%
|
603 D
|
|
1000mm Single
Contraction 1.8%
|
603 F
|
|
500mm Single
Contraction 2%
|
604 D
|
|
1000mm Single
Contraction 2%
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604 F
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Contraction Rules Contractions
not listed can be supplied upon request. Listed above are contractions
that apply to most metals in use today. They must not be taken too
literally, but use as a guide only. Each user must judge for himself.
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