1018 Steel Stainless Steel Aluminum IIW Type 2 Calibration Block With Test Report

Here is a detailed explanation of the IIW-Type 2 Calibration Block, a standard ultrasonic NDT calibration tool defined by the International Institute of Welding (IIW), ASTM E164, and other specifications, which is a modified version of the classic IIW-Type 1 block, with enhanced features for on-site and lab calibration.

1. Dimensions:
   • Imperial: 1" * 4" * 12" (25.4 mm * 101.6 mm * 304.8 mm)
   • Metric: 25 mm * 100 mm * 300 mm
2. Key features:
   • Double-radius arcs: 2" (50 mm) and 4" (100 mm) radii for distance/angle calibration
   • Precision holes: Imperial (3/64", 5/64", 8/64", 0.06" SDH); Metric (1 mm, 2 mm, 3 mm, 1.5 mm SDH)
   • Engraved reference marks for quick reading of refracted angles
3. Material: Mild carbon steel (1018 steel is common); optional materials like aluminum, stainless steel, nickel-plated/black anodized finishes are available on request