Aluminum Strip Thickness Tolerance Standards Explained
Controlling the thickness tolerance of aluminum strip is critical in industries such as transformers, electronics, and construction. A well-defined aluminum strip thickness tolerance ensures high processing precision, consistent product performance, and compliance with international standards.
What Is Thickness Tolerance?
Thickness tolerance refers to the allowable deviation from the nominal (target) thickness of an aluminum strip. It ensures each batch of material remains within an acceptable range of accuracy for its intended application.
Standard Tolerance Levels (Typical Values)
Below is a general tolerance chart based on common industry standards (e.g. EN, GB/T, ASTM):
| Nominal Thickness (mm) | Thickness Tolerance (± mm) |
|---|---|
| 0.10 – 0.15 | ±0.01 |
| 0.16 – 0.30 | ±0.015 |
| 0.31 – 0.50 | ±0.02 |
| 0.51 – 1.00 | ±0.03 |
| 1.01 – 2.00 | ±0.04 |
| 2.01 – 3.00 | ±0.05 |
How Thickness Tolerance Is Measured
- Using precision micrometers or laser thickness gauges
- Measured at several points across the width and along the length
- Statistical averaging ensures consistent quality
Why Thickness Tolerance Matters
Even small deviations can lead to defects in the final product, especially in:
- Transformer windings: affecting insulation, coil fitting, and heat dissipation
- Stamped parts: causing dimension mismatches or tool wear
- Foil wrapping: causing uneven tension and performance issues
Our Quality Commitment
We supply high-precision aluminum strips with industry-leading thickness control, backed by ISO-certified production lines and real-time online measurement systems.
Custom tolerance ranges and thickness specifications are available for your specific application—contact us to learn more.
