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How SPC Data Can Raise Tensile-Test Cpk from 1.0 to 1.67

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How SPC Data Can Raise Tensile-Test Cpk from 1.0 to 1.67
📅 June 30, 2026 · Read ~1 min

Overview

Cpk = 1.0 is the industry baseline, but many material labs linger at 0.8. This article shows how to push Cpk to 1.67 with SPC data closed-loop on a WDW-100 universal tester.

What It Means for Test Equipment

New standards and tighter customer requirements make accurate sensing, repeatable fixtures, automatic judgment and traceable data essential. A well-configured test system should capture the complete process and produce an auditable report.

Ouxun Recommendation

Ouxun engineers can review the product, test standard and required cycle time, then configure the appropriate pressure, flow, temperature, force or environmental modules. Existing equipment can also be upgraded in stages, from software and control cabinets to a complete test-system replacement.

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