Open time: 8 : 00 AM - 5 : 30 PM (Monday - Saturday)
Open time: 8 : 00 AM - 5 : 30 PM (Monday - Saturday)
Available on backorder
| Detector | Carbide ball is used at the tip of the impact hammer (D type: ASTM A956 specification) |
| Display | 7 segments, LED display |
| Hardness display range | Leeb hardness: 1 to 999HL |
| Measuring accuracy | 800±12HL For measurements performed using a testing method described in the user’s manual with a Mitutoyo-recommended test block firmly mounted on a granite surface base |
| Display range (The display range varies depending on the conversion table used.) | Vickers hardness: 43 to 950HV Brinell hardness: 20 to 894HB Rockwell hardness (C scale): 19.3 to 68.2HRC Rockwell hardness (B scale): 13.5 to 101.7HRB Shore hardness: 13.2 to 99.3HS Tensile strength: 499 to 1996MPa |
| Function | Automatic angle correction Offset Pass or failure decision function Data save: 1800 Points Conversion (details in display range) Statistical calculation function (mean, maximum, minimum, variation, standard deviation) Auto-sleep Dotting count display |
| Specimen requirements | Min. thickness: 5mm; mass: 5kg or more (However, specimens with a mass between 0.1 and 5kg can be tested if fixed to a strong support.) Test points: At least 5mm from specimen edges and at intervals of at least 3mm Surface roughness: up to Ra 2μm |
| External connection interface | RS-232C and SPC (1 each; simultaneous output is available) |
| Power supply |
Two AA alkaline batteries (battery life: Approx. 70 hours in continuous use), AC adapter (special accessory) |
| Operating environment |
Temperature: 0 to 50oC Humidity: 95% (No condensation) |
| External dimensions Mass |
Display: Approx.70(W)×110(D)×35(H)mm Approx. 200g Detector: Approx.ø28×175mm. 120g |
Technical Data
Impactor: Impact hammer with integrated
detector and carbide-ball tip
(D type: conforming to ASTM A 956)
Display unit: 7-segment LCD
Functions: Auto angle compensation, Off set,
OK/NG judgment, Hardness scale conversion
Data storage (1800 data entries)
Statistical analysis (Average, Maximum, Minimum, Dispersion)
Auto sleep function
Impact counter display function
Testable workpiece
Thickness: Minimum 5mm or more
Mass: 5kg or more in mass
Test points: 5mm or more from the edge of the
sample, 3mm or more to each of the tested points.
Surface roughness: Ra 10ìm or less
Power supply: Alkaline AA battery 2pcs or optional
AC adapter (battery life: 70 hours)
For the rebound type hardness tester, gravity affects the measurement result depending on the orientation of the detector relative to the vertical when pressed against the specimen surface. The HH-411 is equipped with the latest measurement technology that automatically detects the orientation of the detector to automatically correct for this effect. For this reason, the setting for orientation of the detector is not required.
Only a small surface (standard D type: ø22mm, separately sold DL type: ø4mm) area is required for hardness testing. Therefore the HH-411 can be used for testing of various specimen shapes such as around grooves and gear teeth.
Up to 1800 hardness test results can be saved, which is useful for patrol tests in the field.
Based on the Leeb hardness HL value (L value: according to ASTM A 956), conversion can be performed to Vickers, Brinell, Rockwell C, Rockwell B, and Shore hardness as well as tensile strength. Conversion can be performed after the test, or hardness value display in the conversion mode is also available.
The basic operation is to press the detector against the sample surface and push the detector button by your finger, just like clicking a ballpoint pen, so it is easy for anyone to do.