1.novel and pleasing appearance. 2.full functions, easy operation. 3.clear and direct-viewing display. 4.stable performance.
Technical Specifications
1. The Power Source and the Voltage: AC220V±5%, 50-60 Hz
Time-delayed control: 2-60 seconds, adjustableThe Max. Height of the Testing Specimen: 175 mmThe Distance from the Indenter Center to the Instrument Body: 165mm.Overall Dimension (Length×Width×Height): 551×260×800 mmThe Net Weight of the Tester: 80kg (Approx).Rockwell Hardness
7. The Technical Specifications of Rockwell Hardness
Rockwell Hardness | |||||||
Test Force | Initial Test Force(N) | 98.07(10kg) | Tolerance±2.0% | ||||
Total Test Force(N) | 588.4(60 kg) | Tolerance±1.0% | |||||
980.7(100 kg) | |||||||
1471(150kg) | |||||||
Indenter | Diamond Cone Indenter | ||||||
Diameter 1.5875mm Ball Indenter | |||||||
Scale | HRA | HRB | HRC | HRD | HRE | ||
HRF | HRG | HRH | HRR | HRM | |||
HRP | HRS | HRK | HRL | HRV | |||
8. The allowed tolerances of the Rockwell hardness displaying values
Scales | Hardness Range of the Standard Hardness Blocks | Allowed Tolerance of Displaying Value | Allowed Repeatability of Displaying Value a |
A | (20~≤75)HRA | ±2HRA | ≤0.02(100-H) or 0.8 Rockwell unit b |
(>75~≤88) HRA | ±1.5HRA | ||
B | (20~≤)45HRB | ±4HRB | ≤0.04(130-H) or 1.2 Rockwell unit b |
(>45~≤80)HRB | ±3HRB | ||
(>80~≤100)HRB | ±2HRB | ||
C | (20~≤70)HRC | ±1.5HRC | ≤0.02(100-H) or 0.8 Rockwell unit b |
a:H means average hardness value b:select a larger value | |||
Superficial Rockwell hardness
9. The technical specifications of superficial Rockwell hardness
Superficial Rockwell | ||
Test Force | 29.42(3 kg) | Allowed Tolerance±2.0% |
147.1(15 kg) | Allowed Tolerance±1.0% | |
294.2(30 kg) | ||
441.3(45 kg) | ||
Indenter | Diamond Cone Indenter | |
Diameter 1.5875mm Ball Indenter | ||
Scales | HR15N, HR30N , HR45N | |
HR15T, HR30T , HR45T | ||
HR15W, HR30W, HR45W | ||
HR15X, HR30X, HR45X | ||
HR15Y, HR30Y, HR45Y | ||
10. The repeatability of the superficial Rockwell hardness displaying values and allowed tolerance of displaying value
Scales | Hardness Range of the Standard Hardness Blocks | Allowed Tolerance of Displaying Value | Allowed Repeatability of Displaying Value a |
| 15N | (0~77)HR 15N | ±2 HRN | ≤0.04(100-H)or 1.2 Rockwell unit b |
(78~88)HR 15N | |||
(89~91)HR 15N | |||
30N | (42~54)HR 30N | ||
(55~73)HR 30N | |||
(74~80)HR 30N | |||
45N | (20~31)HR 45N | ||
(32~61)HR 45N | |||
(63~70)HR 45N | |||
15T | (73~80)HR 15T | ±3 HRT | ≤0.06(100-H)or 2.4 Rockwell Unit b |
(81~87)HR 15T | |||
(88~93)HR 15T | |||
30T | (43~56)HR30T | ||
(57~69)HR 30T | |||
(70~82)HR 30T | |||
45T | (12~33)HR 45T | ||
(34~54)HR 45T | |||
(55~72)HR 45T | |||
a:H means average hardness value b:select a larger value | |||
CE certified,SCTMC Digital Double Rockwell Hardness Tester
