- Using X axis to move to another sample.
- Fully enclosed
- Indenter tip going into the indenter
ASTM E18-15: Rockwell Hardness Testing
Recipe Requirements
Test Types - Customer Manual
Download one of the following recipes to execute the test protocol:
Rockwell Hardness Scales
HRB
HRC
HRA
HRD
HRE
HRF
HFG
HRH
HRK
HRL
HRM
HRP
HRR
HRS
HRV
Rockwell Superficial Hardness Scales
15 kgf (147 N)
30 kgf (294 N)
45 kgf (441 N)
Maintenance - Customer Manual
Direct Verification
Indirect Verification
Components Requirements
Ball Holder specifications
- Ball holder material hardness ≥ 25 HRC
- Ball protrusion outside the holder ≥ 0.3 mm.
- Can be verified by performing a rockwell test on a 10 HRBW or software material.
- Satisfactory if the hardness result is within ± 1.5.
- Should pass a direct verification procedure.
- Other points:
Balls specifications
- Permanently embedded or removable ball indenters can be used.
- Balls may be reused as long as they remain within the dimensional and surface-condition requirements of ASTM E18 (randomly testing balls in a batch is considered sufficient):
- Surface roughness ≤ 0.00005 mm (2 μin)
- Diameter difference with the nominal value (at least 3 positions):
- Class A balls ≤ 0.0010 (0.00004 in)
- Class B balls ≤ 0.0025 (0.0001 in)
- Hardness:
- WC ball ≥ 1500 HV1
- Steel balls ≥ 746 HV1
- WC ball density = 14.8 ± 0.2 g/cm3
- WC composition:
- Total Other carbides: 2.0% max
- Cobalt: 5.0 to 7.0%
- Tungsten Carbide: balance
- Other points:
Test block specifications
QC Checklist:
- Ball Holder: Check specific requirements part
- Balls: Check specific requirements part
Made with Bullet