The IMPACT TH-1100 is a small, integrated digital hardness tester which operates according to the dynamic rebound method (standardized according to ASTM A956). The compact design allows easy on-site hardness testing on solid, components that are difficult to transport, or to be used on positions difficult to access by other hardness testers. Quick and reproducible measurements can be made independent of impact direction.

• Leeb principle, portable rebound hardness tester
• Hardness values in Rockwell HRB, HRC, Vickers HV, Brinell HB, Shore HS, Leeb HLD
• Test results appear directly on the display
• Impact Device D integrated: no cables
• Tests at any angle, even upside down
• Bright LCD display
• Battery capacity on display
• Rechargeable Li-on battery
• Simple handling and low test expenditure

Standard impact device	D integrated
Hardness scales	HRC, HRB, HV, HB, HS & HLD
Measuring range / materials	See table
Accuracy	±6HLD
Output	No
Min. surface roughness of workpiece	1.6μ (Ra)
Max. workpiece hardness	940HV
Min. radius of workpiece	Rmin= 50mm (convex/concave) (with support ring Rmin= 10mm)
Min. workpiece weight	2-5kg on stable support, 0.05-2kg with compact coupling
Min. workpiece thickness coupled	5mm
Min. thickness of hardened layers	0.8mm
Charging time	3 hours
Continuous working time	> 8 hours
Power	Rechargeable Li battery
Operating temperature	0°C to 40°C
Overall dimensions	145×35×30mm
Weight	110gr

Material	HLD	HRB	HRC	HB	HV	HS
Steel & cast steel	300-900	38.4-99.8	20-68.4	81-654	81.1-955	32.5-99.5
Cold work tool steel	300-840		20.4-67.1		80-898
Stainless steel	300-800	46.5-101.7	19.6-62.4	85-655	85-802
Gray cast iron	360-650			93-334
Nodular cast iron	400-660	23.8-34.6		131-387
Cast alumumium	200-570	13.5-95.3		26.8-164
Brass	200-550			40-173
Bronze	300-700			60-290
Copper	200-690			45-315
Wrought steel				143-650