Vertical Height 170mm Basic Manual Rockwell Hardness Testing
Machine with Resolution 0.5HR
Brief Introduction:
Hardness is an important index of mechanical properties. It is the
ability of one kind of material to resist another harder object
with certain shape, size, and no self residual deformation after
pressing into its surface.
Rockwell hardness test is the most rapid, simple and economical
test method in mechanical property test. It is not only simple in
operation and high in efficiency, but also can obtain the test
results directly. With the rapid development of industry in China,
Rockwell hardness test has been widely used.
Technical Specifications:
| Product name | Manual Rockwell Hardness Tester |
| Model | XRock-150A |
| Measuring range | 20-88HRA, 20-100HRB, 20-70HRC |
| Dial pointer range | A,C (black):0-100; B(red): 30-130 |
| Preliminary test force | 10kgf (98.07N) |
| Rockwell test force | 60Kgf(558.4N), 100Kgf(980.7N), 150Kgf(1471N) |
| Hardness indication | Dial Reading |
| Resolution | 0.5HR |
| Loading control | manual |
| Max height of specimen | 170mm |
| Instrument throat | 135mm |
| Dimension | 470 x 240 x 630mm |
| Packing dimension | 540 x 420 x 700mm |
| Power supply | AC 220V/50Hz;AC110V/60Hz |
| Gross/ Net weight | 65Kg/56Kg |
| Execution standard | GB/T230.2, JIS Z2245, EN-ISO 6508 , ASTME-18 |
Standard Delivery:
| Instrument main body | Ø1.588mm ball indenterl | Weight A |
| Ø58mm V-shape anvil | Ø1.588mm Steel ball | Weight B |
| Hardness block | Cone diamond indenter | Weight C |
| Anti-dust cover | Ø150mm Flat anvil | Accessory box |
| Warranty card | Qualified certificate | Instrument manual |
Applications:
● HRA is widely used to measure hardness of carbide alloy, quenched
hardening steel after carbonized, hardened thin steel strip and
plate, etc. For materials HRC > 67, it is more likely to damage
the diamond indenter if we use 1471 test force. For those
materials, we had better choose HRC hardness scale which has small
test force and indentation.
● HRB is suitable to test medium hardness materials such as low and
medium carbon steel after annealing treatment, malleable iron, all
kinds of brass, bronze, hard aluminum alloy after solution
treatment and so on. The applicable scope is 20~100 HRB. when the
material hardness is under 20HV, on account of the creep of metal
the specimen deformation will last for a long time under the test
force. The needle on indicator dial or optical projection scale
moves slowly, causing difficulty in measuring precision. While when
the material hardness exceeds 100 HV, the shallow indentation depth
decreases sensitivity affecting measuring precision.
● HRC is most applicable to testing carbon steel after quenching or
low tempering, alloy steel, tool steel, die steel, as well as
chilled cast iron, titanium alloy and so on. Generally, we apply
HRC scale to test materials HRB>100, and HRB scale to test
materials HRC<20 avoiding influence caused by glide of indenter.
