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Metal Hardness Testers
Special Purpose Impact Devices for Hardness Testers
Products >> Bliss NDT Instruments >> Metal Hardness Testers >> Special Purpose Impact Devices for Hardness Testers
Special Purpose Impact Devices for Hardness Testers
Optional Impact Devices
The unit is fitted with universal impact device D. Special impact devices are available for use in extremely confine spaces, with special component geometry or surface finish. These significantly extend the possibilities of application for the procedure. Each special impact device is compatible with unit D indicating device and is supplied as an optional accessory. Compatible with Hardness Tester Models: TH 160, TH 170, TH 370pro & TH 420
Impact device D DC DL D+15 C G
Application For the majority of your hardness testing requirements Use in very confined spaces, e.g. in holes, cylinders or for internal measure- ments on assembled machines For measurements in extremely confined spaces or at the base of grooves For measurements in grooves or recessed surface Surface hardened components, coatings, thin walled or impact sensitive components (small measuring indentation) Solid components. E.g. heavy castings and forgings
Impact energy 11Nmm 11Nmm 11Nmm 11Nmm 3Nmm 90Nmm
Mass of impact body 5.5g 5.5g 7.3g 7.8g 3g 20g
Tip Diameter 3mm 3mm 3mm 2.78mm 3mm 5mm
Hardness 1600HV 1600HV 1600HV 1600HV 1600HV 1600HV
Material Tungsten carbide Tungsten carbide Tungsten carbide Tungsten carbide Tungsten carbide Tungsten carbide
Impact Device Length 147mm 86mm 202mm 162mm 141mm 254mm
Diameter 20mm 20mm 20mm 20mm 20mm 30mm
Weight 75g 50g 100g 80g 75g 250g
Max. hardness of sample 940HV 940HV 950HV 940HV 1000HV 650HB
The average roughness of sample Ra: 1.6μm Ra: 1.6μm Ra: 1.6μm Ra: 1.6μm Ra: 0.4μm Ra: 6.3μm
Min. weight of sample of compact shape 5 kg / 11lbs 5 kg / 11lbs 5 kg / 11lbs 5 kg / 11lbs 1.5 kg / 3.3lbs 15 kg / 33lbs
on solid support 2 kg / 4.5 lbs 2 kg / 4.5 lbs 2 kg / 4.5 lbs 2 kg / 4.5 lbs 0.5 kg / 1.1 lbs 5 kg / 11 lbs
coupled on plate 0.05 kg / 0.2 lbs 0.05 kg / 0.2 lbs 0.05 kg / 0.2 lbs 0.05 kg / 0.2 lbs 0.02 kg / 0.045 lbs 0.5 kg / 1.1 lbs
Min. thickness of sample uncoupled 25 mm /
0.98 inch		 25 mm /
0.98 inch		 25 mm /
0.98 inch		 25 mm /
0.98 inch		 15 mm /
0.59 inch		 70 mm /
2.73 inch
coupled 3 mm /
0.12 inch		 3 mm /
0.12 inch		 3 mm /
0.12 inch		 3 mm /
0.12 inch		 1 mm /
0.04 inch		 10 mm /
0.4 inch
surface layer thickness 0.8 mm /
0.03 inch		 0.8 mm /
0.03 inch		 0.8 mm /
0.03 inch		 0.8 mm /
0.03 inch		 0.2 mm /
0.008 inch		  
Indentation size on test surface with 300 HV, 30
HRC		 diameter 0.54 mm /
0.21 inch		 0.54 mm /
0.21 inch		 0.54 mm /
0.21 inch		 0.54 mm /
0.21 inch		 0.38 mm /
0.015 inch		 1.03 mm /
0.04 inch
depth 24 μm /
960 μinch		 24 μm /
960 μinch		 24 μm /
960 μinch		 24 μm /
960 μinch		 12 μm /
480 μinch		 53 μm /
2120 μinch
Indentation size on test surface with 600 HV, 55
HRC		 diameter 0.45 mm /
0.017 inch		 0.45 mm /
0.017 inch		 0.45 mm /
0.017 inch		 0.45 mm /
0.017 inch		 0.32 mm /
0.012 inch		 0.9 mm /
0.035 inch
depth 17 μm /
680 μinch		 17 μm /
680 μinch		 17 μm /
680 μinch		 17 μm /
680 μinch		 8 μm /
2560 μinch		 41 μm /
1640 μinch
Indentation size on test surface with 800 HV, 63
HRC		 diameter 0.35 mm /
0.013 inch		 0.35 mm /
0.013 inch		 0.35 mm /
0.013 inch		 0.35 mm /
0.013 inch		 0.30 mm /
0.011 inch		  
depth 10 μm /
400 μinch		 10 μm /
400 μinch		 10 μm /
400 μinch		 10 μm /
400 μinch		 7 μm /
280 μinch		  
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