Technical Parameters

Linear Tolerance

Dimensions  (mm)
Normal (mm) 
The Equivalent
Premium (mm)
The Equivalent
ISO8062-3 (2007)
VDG P690  (1990)
ISO8062-3 (2007)
VDG P690  (1990)
0-10
±0.26
DCTG6
D2
±0.13
DCTG4
D3
10-16
±0.27
DCTG6
D1
±0.14
DCTG4
D2
16-25
±0.28
DCTG6
D1
±0.15
DCTG4
D2
25-40
±0.32
DCTG6
D2
±0.23
DCTG5
D2
40-63
±0.35
DCTG6
D2
±0.25
DCTG5
D2
63-100
±0.55
DCTG7
D1
±0.39
DCTG6
D2
100-160
±0.90
DCTG8
D1
±0.60
DCTG7
D2
160-250
±1.40
DCTG9
D1
±1.00
DCTG8
D2
250-400
±2.20
DCTG10
D1
±1.60
DCTG9
D2
>400
±.8%
DCTG11
D1
±0.5%
DCTG9
D2

Size And Weight Range

Items
Size
Premium
Outline Dimension (mm)
1000×620×380
﹤100
Weight (Kg)
0.001-80
0.1-1.5
Min.Wall Thickness (mm)
0.5
5-10

Angle Tolerance

Angle Type

AngleTolerance1.jpg 

AngleTolerance2.jpgAngleTolerance3.jpg

Normal

±1°

±2°

±2°

Premium

±0.5°

±1°

±1°

Avoid the quick changes of casting structure,use fillet radius on 
internal angle when possible,which is no less than R0.3.

AngleTolerance4.jpg

Limit Dimension For Cast Holes and Slots

Items

Hole Dia.(mm)

L/D

Limit1.jpg 

Φ2-Φ3

L/D≤2

Φ4-Φ7

L/D≤5

≥Φ8

L/D≤10

Limit2.jpg

Φ2-Φ3

L/D≤1

Φ4-Φ7

L/D≤2.5

≥Φ8

L/D≤3.5

Deeper and more complicated holes and slots can be casted by using soluble wax cores and ceramic cores.

Tolerance for Flatness, Straitness and Roundness

Dimension (mm)
Normal
Premium
0-25
0.2
0.1
25-50
0.4
0.2
50-100
0.6
0.3
100-150
0.8
0.4

Surface Roughness

Rough Castings
(Weight) >5kg
Main Wall Thickness >12 mm
Ra3.2-6.3
(Weight)<5kg
Main Wall Thickness<12 mm
Ra1.6-3.2
Finished Castings
0.8-1.6


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