Resources
Linear Tolerances
The industry standard linear tolerances for any investment casting process are ±.005 per inch of length. In addition, this standard can be adjusted to meet your specific process capabilities. Milwaukee Precision is prepared to meet your investment castings needs, even if tighter tolerances are needed (please note that tighter tolerances may require special procedures and/or secondary operations that can impact cost and production time). Feel free to contact us to discuss your specific tolerance requirements.
Capabilities
Tolerance Capabilities
The investment casting process can produce precisely replicated parts in a truly economical fashion. Effective part configuration is the critical element in achieving strict tolerances for investment casting. Milwaukee Precision’s team of experts communicates with you at every step of the process – ensuring you of a quality experience that is unparalleled in the investment casting industry.
General parameters for linear investment casting tolerances are shown below:
Inches
| Dimension | Normal | Premium |
|---|---|---|
| up to 1/2" | ±.007 | ±.003 |
| 1/2" to 1" | ±.010 | ±.005 |
| 1" to 2" | ±.015 | ±.010 |
| 2" to 3" | ±.020 | ±.015 |
| 3" to 4" | ±.025 | ±.018 |
| 4" to 5" | ±.030 | ±.020 |
| 5" to 6" | ±.032 | ±.022 |
| 6" to 7" | ±.035 | ±.025 |
| 7" to 8" | ±.038 | ±.028 |
Millimeters
| Dimension | Normal | Premium |
|---|---|---|
| up to 12.7 | ±.18 | ±.08 |
| 12.7 to 25.4 | ±.25 | ±.13 |
| 25.4 to 50.8 | ±.38 | ±.25 |
| 50.8 to 76.2 | ±.51 | ±.38 |
| 76.2 to 101.6 | ±.64 | ±.46 |
| 101.6 to 127.0 | ±.76 | ±.51 |
| 127.0 to 152.4 | ±.81 | ±.56 |
| 152.4 to 177.8 | ±.89 | ±.64 |
| 177.8 to 203.2 | ±.96 | ±.71 |
Minimal Lead Time
Built for complex applications requiring repeatable accuracy and tight dimensional control across production runs.
Accuracy of ± .005 per inch
ISO-certified quality systems with advanced inspection and full traceability from tooling to delivery.
AMS 2175 Compliance
Fast RFQ response, efficient tooling development, and scalable production capacity to meet your schedule.
Competitive Pricing
Cast, machine, finish, and inspect under one roof — reducing lead times and supply chain complexity.
ISO 9001:2015 Certified
DFM reviews and casting optimization from experienced engineers who understand your application requirements.
Advanced Inspection
X-ray, MPI, FPI, HIPing, and dimensional validation ensure every component meets your spec before shipment.
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We cast a broad range of alloys — from corrosion-resistant stainless grades to
high-strength tool steels — engineered for demanding industrial, defense, and
energy applications.
Fast RFQ Response
Typical quote turnaround within 1–2 business days
Engineering Support
DFM review and casting optimization included with every quote
Scalable Production
Prototype to high-volume production capability
Full Technical Consultation
Material selection, tolerance review, and process recommendations
