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Portable Leeb Hardness Tester Probes
Material Hardness |
Hardness scale |
Impact device |
|||||
D/DC |
D+15 |
C |
G |
E (imported) |
DL |
||
Steel and cast steel |
HRC |
17.9~68.5 |
19.3~67.9 |
20.0~69.5 |
|
22.4~70.7 |
20.6~68.2 |
HRB |
59.6~99.6 |
|
|
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 |
|
Steel |
HB |
143~650 |
|
|
|
|
|
CWT. 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 |
|
|
|
|
|
HB |
85~655 |
|
|
|
|
|
|
HV |
85~802 |
|
|
|
|
|
|
GC. iron |
HRC |
|
|
|
|
|
|
HB |
93~334 |
|
|
92~326 |
|
|
|
HV |
|
|
|
|
|
|
|
NC. iron |
HRC |
|
|
|
|
|
|
HB |
131~387 |
|
|
127~364 |
|
|
|
HV |
|
|
|
|
|
|
|
C. Alum |
HB |
19~164 |
|
23~210 |
32~168 |
|
|
HRB |
23.8~84.6 |
|
22.7~85.0 |
23.8~85.5 |
|
|
|
Brass |
HB |
40~173 |
|
|
|
|
|
HRB |
13.5~95.3 |
|
|
|
|
|
|
Bronze |
HB |
60~290 |
|
|
|
|
|
Copper |
HB |
45~315 |
|
|
|
|
|
Tolerance and repeatability
No. |
impact device |
Hardness value of Leeb standard hardness block |
Accuracy of displayed value |
Repeatability of displayed value |
1 |
D |
790±40HLD 530±40HLD |
±6 HLD ±10 HLD |
6 HLD 10 HLD |
2 |
DC |
790±30HLDC 530±40HLDC |
±6 HLDC ±10 HLDC |
6 HLDC 10 HLDC |
3 |
DL |
894±40HLDL 736±40HLDL |
±12 HLDL |
12 HLDL |
4 |
D+15 |
795±40HLD+15 544±40HLD+15 |
±12 HLD+15 |
12 HLD+15 |
5 |
G |
590±40HLG 500±40HLG |
±12 HLG |
12 HLG |
6 |
E |
755±40HLE 508±40HLE |
±12 HLE |
12 HLE |
7 |
C |
851±40HLC 590±40HLC |
±12 HLC |
12 HLC |
Technical specifications of impact devices
Types of impact device |
DC(D)/DL |
D+15 |
C |
G |
E(imported) |
Impact energy |
11mJ |
11mJ |
2.7mJ |
90mJ |
11mJ |
Test tip hardness |
1600HV |
1600HV |
1600HV |
1600HV |
5000HV |
Impact device diameter |
20mm |
20mm |
20mm |
30mm |
20mm |
Max. hardness of sample |
940HV |
940HV |
1000HV |
650HB |
1200HV |
Roughness of sample surface |
1.6μm |
1.6μm |
0.4μm |
6.3μm |
1.6μm |
Minimum weight of sample: |
>5kg |
>5kg |
>1.5kg |
>15kg |
>5kg |
Min. thickness of sample Coupling tightly |
5mm |
5mm |
1mm |
10mm |
5mm |
Size of tip indentation
Hardness |
Indentation diameter |
0.54mm |
0.54mm |
0.38mm |
1.03mm |
0.54mm |
Depth of indentation |
24μm |
24μm |
12μm |
53μm |
24μm |
|
Hardness |
Indentation diameter |
0.54mm |
0.54mm |
0.32mm |
0.90mm |
0.54mm |
Depth of indentation |
17μm |
17μm |
8μm |
41μm |
17μm |
|
Hardness |
Indentation diameter |
0.35mm |
0.35mm |
0.35mm |
|
0.35mm |
Depth of indentation |
10μm |
10μm |
7μm |
|
10μm |
|
|
|
D: General test. |
D+15 : Test |
C : |
G : |
E : |