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Impact Devices For Hardness Tester
Impact Devices For Hardness Tester
Impact device D: Universal device for most hardness requirements
Impact device DC: Ultra-short version; manually loaded on the front; same characteristics as type D; for testing in boreholes,built-in parts, hollow cylindrical parts, etc.; max. 940 HV
Impact device DL: With extremely long and fine front piece only for steel and cast steel; for testing in narrow or hard to reach areas; max. 950 HV
Impact device D+15: The front part is narrow and the coil is located behind it; same characteristics as type D; only for steel;for hardness testing in slots, grooves, recessed areas, gear flanks,grooves, cavities, tooth flanks, etc.; max. 940 HV
Impact device C: Reduced impact energy of about 1/4 of type D; for tempered or surface treated steel, small or sensitive-to-shock parts (minimal imprint is left); max. 1000 HV
Impact device G: With large test-tip diameter; impact energy 9 times larger than type D; on steel, gray or nodular cast iron; for large cast parts and forgings or parts with high surface roughness;max. 650 HB (only in Brinell)
Impact device E: With a synthetic diamond test tip of approx.5000 HV; for very hard materials (above 50 HRC / 650 HV) such as carbide, barrels, etc.; max. 1200 HV
|
Material |
Method |
Impact device |
|||||
|
D/DC |
D+15 |
C |
G |
E |
DL |
||
|
Steel and cast steel
|
HRC |
20～68.5 |
19.3～67.9 |
20.0～69.5 |
|
22.4～70.7 |
20.6～68.2 |
|
HRB |
38.4～99.6 |
|
|
47.7～99.9 |
|
37.0～99.9 |
|
|
HRA |
59.1～85.8 |
|
|
|
61.7～88.0 |
|
|
|
HB |
127～651 |
80～638 |
80～683 |
90～646 |
83～663 |
81～646 |
|
|
HV |
83～976 |
80～937 |
80～996 |
|
84～1042 |
80～950 |
|
|
HS |
32.2～99.5 |
33.3～99.3 |
31.8～102.1 |
|
35.8～102.6 |
30.6～96.8 |
|
|
Cold work tool steel |
HRC |
20.4～67.1 |
19.8～68.2 |
20.7～68.2 |
|
22.6～70.2 |
|
|
HV |
80～898 |
80～935 |
100～941 |
|
82～1009 |
|
|
|
Stainless steel
|
HRB |
46.5～101.7 |
|
|
|
|
|