COMPANY PRODUCT

1. The hardness is one of the important criteria of the mechanical functions of the materials, and the hardness test is the important means to judge the quality of the metallic materials or parts, As the metallic hardness ha mutual correspondent relations with other mechanical functions, the majority of the metallic materials can calculate the other mechanical functions such as the strength, the fatigue, the evolutionary change and the degree of being worn out can be approximately inferred from the hardness shown by the test.
2. The manual Rockwell hardness fester is a popularly-used hardness testing instrument to measure the Rockwell hardness of the materials. The speed of loading the test force is regulated by the buffer whereas the change of the test force is made by rotating the carriage-changing hand-wheel. The operation of the present instrument is simple, its functions are stable, and its use is, therefore, widely spread.
 
Technical specifications
1.  The initial test force:   98.07N(10kg)
2.  The Total Test force:   588.4N(60kg),  980.7N(100kg),  1471N(150kg)
3.  The specifications of the indenter:
3.1  Diamond Rockwell indenter
3.2  Ball indenter ∮1.588mm
4.  Rockwell hardness testing range:  (20~88) HRA
                                                                     (20~100) HRB
                                                                     (20~70) HRC
5.  The max height of the specimens:   170mm
6.  The distance from the center of the indenter to the instrument body:  165mm
7.  Overall dimension:                463×241 ×660mm
8.  The total weight:                    78kg
9.  Scale, Indenter, Test Force and Application Field of the Rockwell Test

Scale	Type of Indenter	Initial Test Force	Total Test Force （N）	Application Field
HRA	Diamond indenter	98.07 N （10kg）	588.4（60kg）	Hard Alloys, Tempered steel with carbonized surface,  Hardened Steel Plates
HRD			980.7（100kg）	Thin steel plates, steel with tempered surface
HRC			1471（150kg）	Quenched steel, tempered steel, hard cast iron
HRF	Ball indenter       φ1.5875m（1/16inches）		588.4（60kg）	Cast iron, aluminum-magnesium alloy, bearing alloy,  annealed copper alloy, thin and soft steel plate
HRB			980.7（100kg）	Soft steel, aluminum alloy, copper alloy,  forgeable cast iron, annealed steel
HRG			1471（150kg）	Phosphorus bronze, beryllium bronze, forgeable cast iron
HRH	Ball indenter                  φ3.175mm   （1/8 inches）		588.4（60kg）	Aluminum, Zinc, Lead
HRE			980.7（100kg）	Bearing alloy, tin, hard plastic materials
HRK			1471（150kg）