Technical reference of aluminum sand casting

Table of tolerance level of sand casting parts

Basic dimension (mm) tolerance level of raw casting dimension (mm)
from to 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
/ 10 0.09 0.13 0.18 0.26 0.36 0.52 0.74 1 1.5 2 2.8 4.2 / / / /
10 16 0.1 0.14 0.2 0.28 0.38 0.54 0.78 1.1 1.6 2.2 3 4.4 / / / /
16 25 0.11 0.15 0.22 0.3 0.42 0.58 0.82 1.2 1.7 2.4 3.2 4.6 6 8 10 12
25 40 0.12 0.17 0.24 0.32 0.46 0.64 0.9 1.3 1.8 2.6 3.6 5 7 9 11 14
40 63 0.13 0.18 0.26 0.36 0.5 0.7 1 1.4 2 2.8 4 5.6 8 10 12 16
63 100 0.14 0.2 0.28 0.4 0.56 0.78 1.1 1.6 2.2 3.2 4.4 6 9 11 14 18
100 160 0.15 0.22 0.3 0.44 0.62 0.88 1.2 1.8 2.5 3.6 5 7 10 12 16 20
160 250 / 0.24 0.34 0.5 0.72 1 1.4 2 2.8 4 5.6 8 11 14 18 22
250 400 / / 0.4 0.56 0.78 1.1 1.6 2.2 3.2 4.4 6.2 9 12 16 20 25
400 630 / / / 0.64 0.9 1.2 1.8 2.6 3.6 5 7 10 14 18 22 28
630 1000 / / / 0.72 1 1.4 2 2.8 4 6 8 11 16 20 25 32
1000 1600 / / / 0.8 1.1 1.6 2.2 3.2 4.6 7 9 13 18 23 29 37
1600 2500 / / / / / / 2.6 3.8 5.4 8 10 15 21 26 33 42

Required machining allowance for raw sand casting parts(RMA)

maximum dimension (mm) level of required machining allowance
from to 1 2 3 4 5 6 7 8 9 10
/ 40 0.1 0.1 0.2 0.3 0.4 0.5 0.5 0.7 1 1.4
40 63 0.1 0.2 0.3 0.3 0.4 0.5 0.7 1 1.4 2
63 100 0.2 0.3 0.4 0.5 0.7 1 1.4 2 2.8 4
100 160 0.3 0.4 0.5 0.8 1.1 1.5 2.2 3 4 6
160 250 0.3 0.5 0.7 1 1.4 2 2.8 4 5.5 8
250 400 0.4 0.7 0.9 1.3 1.4 2.5 3.5 5 7 10
400 630 0.5 0.8 1.1 1.5 2.2 3 4 6 9 12
630 1000 0.6 0.9 1.2 1.8 2.5 3.5 5 7 10 14
1000 1600 0.7 1 1.4 2 2.8 4 5.5 8 11 16
1600 2500 0.8 1.1 1.6 2.2 3.2 4.5 6 9 14 18

Value added services available for aluminum sand casting and gravity casting parts

value added services aluminum sand casting part aluminum gravity casting part aluminum die casting part
sand blasting
tumbling
common polishing
mirror polishing   /
heat treatment not available
powder coating
plastic coating
painting:  -------------------   -------------------   -------------------
stoving varnish
lacquer varnish
silk screen printing
electroplating:   -------------------   -------------------   -------------------
zinc plating
nickel plating
chrome plating
black hard anodizing not available
chemical impregnation
passivation
electrophoresis
assembly
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