HH-411 is a rebound type portable hardness tester for metal with a compact body and high operability. It allows anyone to perform hardness testing easily at the touch of a key, so it can be used widely on various components in the field.

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) 

Standard Accessories
19BAA265 Test Block HLD800
810-291 Display Unit
810-287 Detector
19BAA460 Cable
Battery AA (Alkaline) 2pcs. 
Optional Accessories
264-504-5A: Digimatic Mini-Processor DP-1VR
937387: Connecting cable for
09EAA082: Printer paper (10 rolls/set) 
810-622: Thermal printer DUP-414
19BAA262: Thermal printer connecting cable
19BAA157: Thermal printer paper
19BAA238: RS-232C connecting cable for PC
06AEG302JA: AC adapter of display unit
19BAA243: Hardness test block (880HLD) 
19BAA244: Hardness test block (830HLD) 
19BAA245: Hardness test block (730HLD) 
19BAA246: Hardness test block (620HLD) 
19BAA247: Hardness test block (520HLD) 
19BAA248: Support ring for convex surface of cylinder (R10 - R20) 
19BAA249: Support ring for convex surface of cylinder (R14 - R20) 
19BAA250: Support ring for convex surface of sphere (R10 - R27.5) 
19BAA251: Support ring for concave surface of sphere (R13.5 - R20) 
19BAA457: Carbide ball for D, DC, D+15 type impactors
19BAA458: Ball shaft for DL type impactor
810-287: D type impactor UD-411
810-288: DC type impactor UD-412
810-289: D+15 type impactor UD-413
810-290: DL type impactor UD-414