General

DAkkSAs an accredited calibration laboratory, we can give you the assurance that the hardness testing machines are calibrated in your company according to valid standards (DIN EN ISO, ASTM). Our calibration laboratory is continuosly monitored by the DAkkS (Deutsche Akkreditierungsstelle), so that the services we offer are always state-fo-the-art and comply with the specified standards. All our service technicians and engineers have unrestricted access to the company's many years of calibration experience in addition to their extensive experience and training.

We are aware of our responsibility for your hardness testing machines. Therefore we work exclusively with high-precision measuring equipment that complies with the standards. Let us give you competent advice and leave the timely calibration of your machines to us - as your partner for calibration.

 

Scope of calibration

 

Accredited testing methods

Measured variable /
Object of calibration
Measuring range /
Measuring span
Measuring range /
Method
Minimum
measurement uncertainty

Hardness (WPM)

60 HBW to 100 HBW DIN EN ISO 6506-2:2015-02
ASTM E10-17
DIN EN ISO 6507-2:2013-12
ASTM E92-17
DIN EN ISO 6508-2:2015-06
ASTM E18-16
VDI/VDE 2616-1 Sheet 1:2012-08
1% HBW,
but not < 1,5 x Ucrm
100 HBW to 650 HBW 2% HBW,
but not < 1,5 x Ucrm
140 HV to 840 HV
(Hardness scales HV5 to HV100)
(Hardness scales HV0,01 to HV3)

1% HV, but not < 1,5 x Ucrm
2% HV, but not < 1,5 x Ucrm
20 HRA to 88 HRA 0,6 HRA
20 HRB to 55 HRB 1,5 HRB
56 HRB to 100 HRB 1,0 HRB
20 HRC to 55 HRC 0,8 HRC
56 HRC to 70 HRC 0,6 HRC
60 HRF to 100 HRF 1,0 HRF
20 HRN to 91 HRN 1,0 HRN
12 HRT to 93 HRT 2,0 HRT
40 HR2,5/62,5 to 85 HR2,5/62,5 VDI/VDE 2616-1
Sheet 1:2012-08
0,8 HR2,5/62,5
25 HR2,5/187,5 to 70 HR2,5/187,5 0,8 HR2,5/187,5
60 HBT to 100 HBT VDI/VDE 2616-1
Validation HBWT version 5
1% HBT
100 HBT to 500 HBT 2% HBT
EHT 0,15mm to EHT 1,43mm Validation EHT depth version 5
according to table 525/550/600
1,5 HR

Force measurement devices
of
hardness testing machines

2,5N to 50kN DIN EN ISO 6506-2:2015-02
ASTM E10-17
DIN EN ISO 6507-2:2013-12
ASTM E92-17
DIN EN ISO 6508-2:2015-06
ASTM E18-16
VDI/VDE 2616-1 Sheet 1:2012-08
0,12%
0,1N to 100N 0,10%

Optical indetation measurement devices
of
hardness testing machines

0mm to 6mm DIN EN ISO 6506-2:2015-02
ASTM E10-17
DIN EN ISO 6507-2:2013-12
ASTM E92-17
0,15µm

Depth measurement devices
of
hardness testing machines

0mm to 0,2mm DIN EN ISO 6508-2:2015-06
ASTM E18-16
0,3µm

Force (WPM)
Force measurement devices of
spring testing machines

2,5N to 50kN

DIN EN ISO 7500-1:2014-05

0,12%
0,1N to 100N 0,10%

Length measurement devices
of
spring testing machines

25mm, 50mm and 75mm Test instruction spring version 3
Validation spring version 7
0,6µm