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W-20a Webster Hardness Tester

W-20a Webster Hardness Tester

Webster hardness testers also known as Webster hardness pliers, they can be used to test the hardness value of aluminum alloy quickly at the scene of the production. They are the preferred instruments for testing the force of aluminum alloy. 

W-20a Webster hardness tester can be used to test the hardness value of aluminum alloy, pipe, plate, aluminum parts, and other soft metals. Judge whether the aluminum products have the aging or not, and determine the limitation is up to standard. It also can distinguish between different types of aluminum and different aging state. Webster hardness testers especially suitable for batch production site and sales site, also for the aluminum profile, door, window, curtain, wall and so on to do the quick testing and non-destructive checking one by one.

Webster hardness tester is easy to operate, just clamp the work piece, and then read the hardness value directly. It focus on high efficiency and good reliability which conform to the China non-ferrous YS/T420-2000 and American standard ASTM B647-84 (2000).


W-20a Webster Hardness Tester Operation Video

Features of W-20a 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-20 Webster Hardness Tester


Range: 0-20 HW (the equivalent of 20-110 HRE)

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-20 series aluminum alloy Webster hardness testers have three models: W-20 Webster hardness tester is mainly used for inspection of aluminum alloy, tubes and plate, W-20a type can be used to inspect industrial aluminum extrusions, plates or parts which of the thickness upper limit to 13 mm, W-20b type for testing small aluminum profiles or aluminum profiles pipes which of the inner diameter is greater than 6 mm.

Otherwise, W-B75, W-BB75 Webster hardness testers for copper alloy, and W-B92 Webster hardness tester for stainless steel, respectively suitable for testing the hardness of materials such as copper, brass and mild steel.

model selection.jpg

Package of W-20a Webster Hardness Tester