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Welcome to YiCheng


Specialist in As-Cast or Fully-machined Investment Castings


Casting Quality


Technical Data For Design Reference


1. Linear Tolerance (mm)


Dimension (mm)
≤10
10～25
25～50
50～75
75～100
100～150
150～200
200～250
＞250
Normal (mm)
±0.15
±0.25
±0.35
±0.50
±0.65
±1.00
±1.50
±1.80
±1.00%
Premium (mm)
±0.10
±0.15
±0.25
±0.40
±0.50
±0.75
±1.00
±1.20
±0.60%


2. Tolerance for Flatness, Straightness, Roundness


Dimension(mm)
0～25
25～50
50～100
100～150
Tolerance(mm)
0.2
0.4
0.6
0.8


3. Surface Roughness (Ra/μm)


Ra6.3～3.2


4. Limit Dimension for Casting Hole and Slots


Items
Diameter of Hole(φmm)
Length or Diameter of Hole (L/D)

φ2～φ3
L / D ≤ 1
φ4～φ7
L / D≤ 2
≥φ8
L / D ≤ 2.5

φ2～φ3
L / D ≤ 2
φ4～φ7
L / D≤ 4
≥φ8
L / D ≤ 5


5. Size and Weight Range


Items
Max
Min
Best
Outline Dimensions (mm)
1000×300×300
20×10×10
＜150×100×100
Weight (Kg)
40
0.015
0.2～5
Minimum Wall Thickness (mm)
─
1.0
5～15


6. Suggestion for Structure Design


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