Professional 5-step ultrasonic calibration blocks designed for precision thickness gauge verification and linearity calibration. Manufactured in compliance with ASTM E797 standards for non-destructive testing applications.

• Precision calibration for ultrasonic thickness gauges
• ASTM E797 compliant manufacturing standards
• Available in multiple material options: 1018 steel, 304 stainless steel, and aluminum
• Standard step face dimensions: 20mm × 20mm (metric) or 0.8" × 0.8" (inch)
• Five distinct thickness steps per block for comprehensive calibration

Model	Image	Specifications
S-5-MM		Metric, 1018 steel, thickness: 5mm/10mm/15mm/20mm/25mm, size: 100×20mm
S-5-MM-SS		Metric, 304 Stainless Steel, thickness: 5mm/10mm/15mm/20mm/25mm, size: 100×20mm
S-5-MM-1		Metric, 1018 steel, thickness: 2.5mm/5mm/7.5mm/10mm/12.5mm, size: 100×20mm
S-5-MM-SS-1		Metric, 304 Stainless Steel, thickness: 2.5mm/5mm/7.5mm/10mm/12.5mm, size: 100×20mm
S-5-MM-AL-1		Metric, Aluminum, thickness: 2.5mm/5mm/7.5mm/10mm/12.5mm, size: 100×20mm
S-5-MM-2		Metric, 1018 steel, thickness: 0.5mm/1mm/1.5mm/2mm/2.5mm, size: 100×20mm
S-5-IN		Inch, 1018 steel, thickness: 0.100" 0.200" 0.300" 0.400" 0.500", size: 4"×0.8"
S-5-IN-SS		Inch, 304 Stainless Steel, thickness: 0.100" 0.200" 0.300" 0.400" 0.500", size: 4"×0.8"
S-5-IN-1		Inch, 1018 steel, thickness: 0.200" 0.400" 0.600" 0.800" 1.000", size: 4"×0.8"

Ideal for calibration and verification of ultrasonic thickness gauges in industrial inspection, manufacturing quality control, maintenance testing, and non-destructive evaluation applications across various sectors including aerospace, automotive, and construction.