Material Hardness Ranges

The document provides hardness measurement ranges for various materials using multiple hardness scales (HLD, HRB, HRC, HB, HV, HS). Key materials and their hardness ranges include:

• Steel & Cast Steel: 300–900 HLD, 38.4–99.8 HRB, 20.4–68.4 HRC, 81–654 HB, 81–955 HV, 32.5–99.5 HS
• CWT.ST: 300–840 HLD, 20.4–67.1 HRC, 85–655 HB, 80–898 HV
• Stainless Steel: 300–800 HLD, 46.5–101.7 HRB, 19.6–62.4 HRC, 85–802 HV
• GC.IRON: 360–650 HLD, 93–334 HB
• NC.IRON: 400–660 HLD, 131–387 HB
• Aluminum: 170–570 HLD, 23.8–84.6 HB, 19–164 HV
• Brass: 200–550 HLD, 13.5–95.3 HB, 40–173 HV
• Bronze: 300–700 HLD, 60–290 HB
• Copper: 200–690 HLD, 45–315 HB

Hardness Tester TH150 Technical Specifications

• Measuring Range: Corresponds to the material hardness ranges listed above.
• Accuracy: ±6 HLD at 760 ±30 HLD.
• Memory: Stores 256 average readings.
• Output: RS232 interface for printer connection.
• Minimum Surface Roughness of Workpiece: 1.6 μm (Ra).
• Maximum Workpiece Hardness: 900 HLD.
• Minimum Radius of Workpiece (convex/concave): Rmin = 11 mm with support ring, 10 mm without.
• Minimum Workpiece Weight: 2–5 kg on stable support; 0.05–2 kg with compact coupling.
• Minimum Workpiece Thickness (coupled): 5 mm.
• Minimum Thickness of Hardened Layers: 0.8 mm.
• Indentation Depth: Specific to impact devices (see below).
• Continuous Working Time: 300 hours without backlight.
• Power Supply: 3 V Lithium battery CR 1/2 AA.
• Operating Temperature: 0 to 40 °C.
• Overall Dimensions: 158 × 60 × 39 mm.
• Weight: 150 g.

Standard Delivery

• Main Unit integrated with Impact Device.
• Test Block with HLD value.
• Cleaning Brush.
• Battery 3 V Li CR 1/2 A.
• Instruction Manual.
• Warranty Card.
• Carrying Case.

Optional Accessories

• Support Rings (details on next page).
• Printer TA220 with cable.
• Tungsten Carbide Impact Devices.

Impact Devices and Support Rings

The document references optional impact devices (types D, DC, DL, C, C+15, G) and support rings to accommodate different testing conditions and workpiece geometries. Specific parameters such as minimum test piece weight, minimum thickness, indentation diameter, and indentation depth vary depending on the impact device used. These accessories enhance measurement flexibility and accuracy on various workpiece shapes and sizes.