Main Features
| Type |
D (Standard) |
DC | DL | D+15 | C | G |
| Picture |
 |
 |
 |
 |
 |
 |
| Impact Energy | 11mJ | 2.7mJ | 90mJ | |||
| Impact Body Weight | 5.5gr | 7.23gr | 7.8gr | 3gr | 20gr | |
| Impact Ball Diameter | 3mm | 5mm | ||||
| Application | The most conventional type, suitable for most applications | Suitable for small space applications, such as holes, cylinders or internal measurements | Used for hardness measurement in small spaces or at the bottom of grooves | For measurement of grooves or recessed surfaces | Measurement of coating or surface hardness, thin-walled parts or non-impact-resistant parts | Suitable for measurement of large parts such as cast iron, copper alloy, aluminum alloy, etc |
| Model | JG-591 |
| Accuracy | ±6HLD |
| Hardness Range | 170-960HLD |
| Conversion Scale | HRC, HRB, HB, HV, HSD, Mpa |
| Impact Device | D, DC, DL, C, D+15, G |
| Display | 854*400, 4 inch color capacitive touch LCD screen |
| Data Storage | 2000 |
| Measurement Direction | Whole Direction |
| Printer | Miniature wireless printer |
| Data Transmission | USB |
| Power | Lithium battery 1400mAh |
| Working Condition | Temperature: -10~40°C Humidity: 20%-85% |
| Storage Condition | Temperature: -30~80°C Humidity: 5%-95% |
| Dimension | 154*82*27mm |
| Weight | 255g |
| Standard Configuration | Display device (main device), D-type impact device, standard hardness block, USB cable, small support ring, cleaning brush, suitcase |
| Standard | GB/T17394, GB/T1172, ASTM A956 & DIN50156 |
| Parts | HV | HB | HRC | HRB | HSD | Intensity |
| Steel or Cast Steel | 83-975 | 140-651 | 19.8-68.5 | 59.6-99.6 | 26.4-99.5 | 375-2639 |
| Cold Coiled Tool Steel | 80-900 | 21-67 | ||||
| Stainless Steel | 85-802 | 85-655 | 20-62 | 47-102 | ||
| Cast Iron | 140-387 | |||||
| Cast Aluminum Alloy | 30-159 | |||||
| Pinchbeck Alloy (Brass) | 40-173 | 13.5-95.3 | ||||
| Copper-tin Alloy (Bronze) | 60-290 | |||||
| Pure Copper & Low Copper Alloys | 45-315 |
