investment castings (lost wax process) Tolerance
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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