Ultrasonic Step Calibration Blocks
Applications：Ultrasonic calibration block step style are used to calibrate and verify the operation of ultrasonic thickness and flaw gauges.
High Precision
In accordance with ASTM E797-05
YUSHI offers a comprehensive range of step calibration blocks in various thickness steps and materials, along with custom manufacturing services. All the Blocks in accordance with ASTM E797-05.
Should you not find the required type in our catalog, please contact me at any time through the contact information on the website.
4-Step Calibration Block
Metric Unit: 3mm, 5mm, 10mm, 15mm 2.5mm, 5mm, 10mm, 20mm 5mm, 10mm, 15mm, 20mm 6.25mm, 12.5mm, 18.75mm, 25mm 0.8mm, 1mm, 1.5mm, 2mm (Thin 4-Step) 1mm, 1.5mm, 2mm, 2.5mm (Thin 4-Step) | Inch Unit: 0.100'', 0.200'', 0.400'', 0.600'' 0.250'', 0.500'', 0.750'', 1.000'' 0.500'', 1.000'', 1.500'', 2.000'' 0.040'', 0.060'', 0.080'', 0.100''(Thin 4-Step) |
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| 4-Step 2.5mm, 5mm, 10mm, 20mm | 4-Step 0.250'', 0.500'', 0.750'', 1.000'' |
5-Step Calibration Block
Metric Unit: 1mm, 2mm, 3mm, 4mm, 5mm 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm 5mm, 10mm, 15mm, 20mm, 25mm 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm (Thin 5-Step) 0.25mm, 0.5mm, 0.75mm, 1mm, 1.25mm (Ultra Thin 5-Step) | Inch Unit: 0.100'', 0.200'', 0.300'', 0.400'', 0.500'' 0.250'', 0.500'', 0.750'', 1.000'' 0.500'', 1.000'', 1.500'', 2.000'', 2.500'' 0.500'', 0.750'', 1.000'', 1.500'', 2.000'' 0.050'', 0.250'', 0.500'', 1.000'', 2.000'' 0.020'', 0.040'', 0.060'', 0.080'', 0.100'' (Thin 5-Step) 0.010'', 0.020'', 0.030'', 0.040'', 0.050'' (Ultra Thin 5- Step) |
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| 5-Step 5mm, 10mm, 15mm, 20mm, 25mm | 5-Step 0.1'', 0.2'', 0.3'', 0.4'', 0.5'' |
6-Step Calibration Block
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| 6-Step 1mm, 3mm, 5mm, 10mm, 15mm, 20mm | 6-Step 2.5mm, 5mm, 10mm, 15mm, 20mm, 25mm |
7-Step Calibration Block
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| 7-Step 1mm, 1.5mm, 2mm, 4mm, 6mm, 8mm, 10mm | 7-Step 3mm, 12mm, 24mm, 30mm, 36mm, 42mm, 48mm |
8-Step Calibration Block
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| 8-Step 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm | Ultra Thin 8-Step 0.030'', 0.040'', 0.050'', 0.060'', 0.070'', 0.080'', 0.090'', 0.100'' |
10-Step Calibration Block
Metric Unit: 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, 22.5mm, 25mm | Inch Unit: 0.050'', 0.100'', 0.150'', 0.200'', 0.250'', 0.300'', 0.350'', 0.400'', 0.450'', 0.500'' 0.100'', 0.200'', 0.300'', 0.400'', 0.500'', 0.600'', 0.700'', 0.800'', 0.900'', 1.000'' 1.100'', 1.200'', 1.300'', 1.400'', 1.500'', 1.600'', 1.700'', 1.800'', 1.900'', 2.000'' |
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| 10-Step 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm | 10-Step 0.1'', 0.2'', 0.3'', 0.4'', 0.5'', 0.6'', 0.7'', 0.8'', 0.9'', 1.0'' |
Special Step Block
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| VersaTip Calibration Block | Curved Step Calibration Block |
ABS Block Case
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| Block Case for 4-Step, 5-Step and 6-Step | Block Case for 7-Step, 8-Step and 10-Step |
Core Applications of Ultrasonic Thickness Step Wedges
Thickness Gauge Calibration
Establish time-to-thickness correlation for material velocity settings
Verify measurement accuracy per ASTM E797 standards
Linearity Validation
Transducer Performance Testing
Evaluate probe resolution
Validate near-surface measurement capability
Reference Standardization
Provide traceable thickness references
Support ISO 17025-compliant calibration certificates
Material-Specific Calibration
Compensate for acoustic velocity variations
Check instrument linearity across thickness ranges
Identify dead zones and measurement blind spots
Thickness step wedges provide essential graduated reference standards for calibrating ultrasonic thickness gauges, validating measurement linearity, compensating for material velocity differences, and ensuring compliance with international inspection codes - particularly where ±0.1mm measurement accuracy is critical.
