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OBT-XHB-3000 Digital Brinell Hardness Tester


OBT-XHB-3000 Digital Brinell Hardness Tester
1. Hardness is one of important mechanical properties of metallic materials, while hardness determination is a principal index to judge the quality of metallic materials and mechanical parts made thereof.  Hardness means material’s capability to resist the pressure applied by another object of no residual deformation itself.  Higher resistance corresponds higher hardness, and vice versa.
2. Brinell hardness test is mainly used in hardness determination of cast iron, steel, non-ferric metals and soft alloys, also can be used for some other nonmetallic materials such as hard plastics, bakelite etc. It is suitable for applications in factories, workshops, laboratories, colleges and research institutes.

Technical specifications
1. Test forces:
                   612.9N(62.5kgf)          4900N(500kgf)
                   980N(100kgf)            7355N(750kgf)
                   1226N(125kgf)           9800N(1000kgf)
                   1839N(187.5kgf)         14700N(1500kgf)
                   2452N(250kgf)           29400N(3000kgf)
2.  Applicable hardness range:        8~650 HBW
3.  Reading accuracy:
Standard hardness block
HBW
Maximum indicating error
(δ/%)
Repeatability
Hef /%
≤125 ±3 3
125<HBW≤225 ±2.5 2.5
>225 ±2 2
 
4. Amplification of Reading Microscope:    20 times 
5. Minimum Division Value of Micrometer Drum Wheel: 0.00125mm
6. Maximum Height of Sample:    225mm
7. Distance from Indenter’s center to instrument Body: 135mm
8. Voltage of Power Source:      AC220V
9. Dimension (L×W×H):    789*543*1225mm
10. Weight:                    130kg
 
The Packing List 
Accessories included:
φ2.5、φ5、φ10mm ball indenter                      1 for each diameter
Large, small and V-type test stock   1 for each type
Standard hardness block    
HBW10/3000    150~250   1
HBW5/750      150~250   1
Fuse   2 (2A)
Power cord   1
Printer operation manual   1
Quality certificate   1
Instruction manual   1
20× microscopic ocular lens   1
Plastic dust-proof cover   1