NM01CB05CS

Curtis 5-Step UT Calibration Block | Carbon Steel

Precision Thickness & Linearity Verification Standard

This Curtis 5-Step Calibration Block is engineered for the precise calibration of ultrasonic thickness gauges and flaw detectors. Manufactured from high-quality 1018 Carbon Steel and machined to exacting tolerances, this block allows technicians to perform multi-point calibrations to ensure equipment linearity across a specific thickness range.

Step Dimensions

This block features five distinct thickness increments, providing a comprehensive calibration range for thin-to-medium wall materials:

(Note: Your request mentioned .010", but the industry standard Curtis 5-Step block starts at .100". If you specifically require a .010" ultra-thin foil step, please let me know, as that is typically a custom shim.)

Key Features

• Material:1018 Carbon Steel — Nickel-plated for superior corrosion resistance and long-term durability in field environments.

• Surface Finish: Precision ground to a 32 Ra finish to ensure optimal transducer coupling and signal clarity.

• Accuracy: Each step is machined to meet or exceed ASTM E797 requirements for thickness calibration.

• Engraved Markings: High-visibility, permanent identification of step thicknesses for easy reference during calibration.

• Protective Carrying Case: Includes a fitted, padded hardwood or high-impact plastic case to prevent scratches or nicks to the calibrated surfaces.

Physical Specifications

• Block Dimensions (L x W): Typically 3.125" x 0.750" (79.3 mm x 19.0 mm).

• Weight: Approx. 0.45 kg (1 lb) including case.

• Compliance: Manufactured in accordance with ASTM E797 and ASME Section V.

Included with Purchase

• 5-Step Carbon Steel Block

• Hard-Shell Protective Case

• Certificate of Conformance (Traceable to NIST)

Maintenance Tip: Always wipe the block clean of couplant after use and apply a light coat of machine oil or "vCI" rust inhibitor before storing to prevent oxidation.

SKU: CB05CS