technique articles

W-BB75b Webster Hardness Tester

W-BB75b Webster Hardness Tester

W-BB75 Series Webster hardness tester can be used to test the hardness value of copper alloy quickly at the scene of the production. Easy to use, just clamping the workpiece firmly, and then read hardness value directly. High efficiency and good reliability. 

It is the first choice to test the mechanical property of copper tubes which conform to the China non-ferrous YS/T471-2004 

It is used quickly to test the hardness of copper tubes, sheets and strips, and especially suitable for batch production site and sales site to do the quick testing and non-destructive checking one by one.


W-BB75b Webster Hardness Tester Operation Video

Features of W-BB75b Webster Hardness Tester

1                        Indenter                        Adopt import special steel material, New technology of manufacturing, High hardness, good toughness,Long life, good interchangeability.Germany imported packaging,To provide comprehensive protection for the indenter.                    
Indicator Hand
2                        Indicator Hand                        High strength of pointer, Not easy bending deformation after long time using or wrong operation.                    
Dial Glass
3                        Dial Glass                        High strength and high toughness of dial glass, Not easy to break after shock.                    
4                        Handle                        Forged aluminum alloy material, Anodic oxidation handle, Beautiful, wear-resistant, resistant to pollution.                    
Hardness Blocks
5                        Hardness Blocks                        Use standard Rockwell hardness tester, In strict accordance with the metrological verification regulations.The number and hardness values of laser etching, The validity period of data can be traced to check.The surface roughness and flatness also conform to the requirements of regulations.                    
High - quality
6                        High - quality                        Well parts processing, Precision of whole machine assembly, Strict quality inspection, Ensure the equipment of high quality.                    
7                        Stability                        Stability of full scale value, Calibration point stability, Pointer no "crawl".                    
8                        Conversion                        Attached conversion table through product manual or "hardness conversion" mobile applications, Webster hardness value can be converted toVickers, Rockwell and Brinell hardness value.                    
9                        Portability                        The high quality portable instrument boxPerfect fit sponge for bufferNot only provides portability for instrumentbut also supply the maximum protection at the same time.                    

Technical Parameters of W-BB75b Webster Hardness Tester


Range: 0-20 HW (the equivalent of 53-92 HRB, the equivalent of 87-109 HRF)

Indicator Error: 0.5 HW (5 -17 HW)

Repeatability Error: 0.5 HW (5 -17 HW)

Weight: 0.5 kg

Maximum specimen thickness: compare according to opening size and model

Minimum sample inner diameter: compare according to the anvil size and model

Comparison of Webster Hardness Testers


W – BB75 series brass alloy Webster hardness testers have two models: W – BB75 Webster hardness tester is mainly used for inspection of copper alloy tubes and strips, W – BB75b type for testing small copper alloy pipes which of the inner diameter is greater than 6 mm.

Otherwise, there are W-20 Aluminum Alloy Webster hardness tester, W - B75  Brass Alloy Webster hardness tester, W – B92 Stainless Steel Webster hardness tester, respectively suitable for testing the hardness of aluminum alloy, brass and mild steel.

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Standard Package of W-BB75b Webster Hardness Tester