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HArdness testers D/DC/DL D+15 C 3 Nmm G 90 Nmm

GaGe amps, Hardness and surf ace TesTers Mass of the Impact Body Hardness 5.5g 7.8g 3.0g 20g
tecHnIcAl dAtA for stArrett HArdness IMpAct devIces
Technical Data for Impact Devices
Impact Energy
11 Nmm
11 Nmm
1600 HV
1600 HV
1600 HV
Test Tip
1600 HV
3mm
3mm
Diameter
3mm
5mm
DL: 7.3 g
Tungsten carbide
Tungsten carbide
Tungsten carbide
Tungsten carbide
Material
20mm
30mm
20mm
20mm
Diameter
162mm
Length
147/86mm
Impact Device
141mm
254mm
75 g
80 g
Weight
75/50 g
250 g
1000 HV
940 HV
650 HB
Max. Hardness of Sample
940 HV
N9
N7
N5
N7
Roughness class ISO
Max. roughness depth Rt
Preparation of Surface
7µm
Average roughness Ra
0.4µm
2µm
2µm
5kg
5kg
Of compact shape
1.5kg
15kg
Min. Weight of Sample
5kg
2kg
0.5kg
2kg
On solid support
Coupled on plate 10µm 10µm 2.5µm 30µm
0.5kg
0.1kg
0.1kg
0.02kg
Coupled 3mm 3mm 1mm 10mm
Min. Thickness of Sample
Min. thickness of layers 0.8mm 0.8mm 0.2mm —
Diameter 0.54mm 0.54mm 0.38mm 1.03mm
Indentation of Test Tip with 300 HV
Depth 24µm 24µm 12µm 53µm
Diameter 0.45mm 0.45mm 0.32mm 0.90mm
Indentation of Test Tip with 600 HV
Depth 17µm 17µm 8µm 41µmC
Diameter 0.35mm 0.35mm 0.30mm —
Indentation of Test Tip with 800 HV
Depth 10µm 10µm 7µm —
ApplIcAtIon And HArdness rAnGes for stArrett HArdness IMpAct devIces
Optional Impact Devices
Material HRC HRB HB HV HSD
Impact Device – D, DC Measuring Range 200-900 †
Steel 20.0-67.9 59.6-99.5 80-647 80-940 32.2-99.5
C.W. Tool Steel 20.4-67.1 80-898
Gray Cast Iron 93-334
Nodular Cast Iron 131-387
Cast Aluminum 30-159
Brass 13.5-95.3 40-173
Bronze 60-290
Copper 45-315
Impact Device – D+15, Measuring Range 300-900† (not shown)
Steel and Cast Steel 19.3-67.9 80-638 80-937 33.3-99.3
Impact Device – C, Measuring Range 350-950 †
Steel and Cast Steel 20.0-69.5 80-683 80-996 31.9-99.6
Impact Device – G, Measuring Range 300-750 †
Steel and Cast Steel 47.7-99.9 90-646
Gray Cast Iron 92-326
Nodular Cast Iron 127-364
Impact Device – DL, Measuring Range 300-900 †
Steel and Cast Steel 20-68 37-100 80-650 80-940 30-97
† Leeb Measuring Range
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