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Rockwell and Superficial Rockwell Dual Hardness Tester

Model: HRSS-150

HRSS-50 Rockwell and Superficial Rockwell Dual Hardness Tester is a multifunctional full scales tester used to measure both the Rockwell and Superficial Rockwell in one machine. Multifunctional full Rockwell hardness tester integrating Rockwell hardness tester, surface Rockwell hardness tester, and plastic Rockwell hardness tester, based on the Rockwell (ROCKWELL) measurement principle. 

It can convert Rockwell hardness values into HB, HV, HLD, HK, and σb values. Suitable for hardness testing of materials such as carbon steel, alloy steel, cast iron, non-ferrous metals, and engineering plastics, it features high testing accuracy, a wide measurement range, automatic loading and unloading of the main test force, digital display of measurement results, and automatic printing or communication with external computers. It can be widely applied in metrology, mechanical manufacturing, metallurgy, chemical industry, building materials, and other industries for testing, research, and production.

General Introduction

HRSS-50 Rockwell and Superficial Rockwell Dual Hardness Tester is a multifunctional full scales tester used to measure both the Rockwell and Superficial Rockwell in one machine. Multifunctional full Rockwell hardness tester integrating Rockwell hardness tester, surface Rockwell hardness tester, and plastic Rockwell hardness tester, based on the Rockwell (ROCKWELL) measurement principle. 

It can convert Rockwell hardness values into HB, HV, HLD, HK, and σb values. Suitable for hardness testing of materials such as carbon steel, alloy steel, cast iron, non-ferrous metals, and engineering plastics, it features high testing accuracy, a wide measurement range, automatic loading and unloading of the main test force, digital display of measurement results, and automatic printing or communication with external computers. It can be widely applied in metrology, mechanical manufacturing, metallurgy, chemical industry, building materials, and other industries for testing, research, and production.


Key Features

  • Features
  • Principle
  • Standard
  • Application

1), The selection of all hardness scales for Rockwell and superficial Rockwell; Total 18 kinds of testing methods, and testing force automatic selection;

2), Dwell time can adjust, Reset and cancel function

3), Review the testing data (max. 24 times). 

4), Data processing and output by micro-printer,

5), RS232 serial communication is supplied to clients for the functional extension.

6), Various hardness values comparison and exchange.

7), 5.2 inch large LCD screen

  1. The indenter moves down into position on the part surface

  2. A minor load is applied and a zero reference position is established

  3. The major load is applied for a specified time period (dwell time) beyond zero

  4. The major load is released leaving the minor load applied.

Dial Analog Rockwell Hardness Tester

The resulting Rockwell number represents the difference in depth from the zero reference position as a result of the application of the major load.


ASTM E18 “Standard Test Methods for Rockwell Hardness of Metallic Materials”

ISO 6508 “Metallic materials — Rockwell hardness test”

ASTM D785 “Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials”

● Measuring the Rockwell hardness of soft metal materials such as ferrous and non-ferrous metals;
● Measuring the Rockwell hardness of high-hardness alloy materials such as cemented carbide;
● Measuring the Rockwell hardness of heat-treated materials such as quenched and tempered metals;
● Measuring the Rockwell hardness of certain non-metallic materials such as plastics and bakelite.

● Measure the surface Rockwell hardness of soft metal materials such as ferrous and non-ferrous metals;

● Measure the surface Rockwell hardness of metals after surface treatment (carburizing, nitriding, electroplating, etc.);

● Measure the surface Rockwell hardness of materials after heat treatment such as quenching and tempering;

● Measure the surface Rockwell hardness of high-hardness alloy materials such as cemented carbide;

● Measure the surface Rockwell hardness of certain non-metallic materials such as plastics and hardboard.


Main Technical Specification

ModelHRSS-150
MethodsRockwellSuperficial Rockwell
Hardness scalesA,B,C,D,E,F,G,H,K,L,M,P,R,S,C15N,30N,45N,15T,30T,45T,15W,30W,
45W,15X,30X,45X,15Y,30Y,45Y
Initial testing force98.07N (10Kg)29.42N (3Kg)
Total test force588.4N(60Kg), 980.7N(100Kg), 1471N(150Kg)147.1N(15Kg), 294.2N(30Kg), 441.3N(45Kg)
Duration time control0-60S adjustable
Hardness value Resolution0.1 Rockwell hardness unit
LCD displayMenu selection, hardness value displaying, data statistics, storage, parameter setting etc.,
CalculationTest times, average value, Max. value, Min. value, repeatability; with alarm function and can set the upper and lower limited value.
Data outputBuilt in printer and RS232 interface
Scales exchangeBrinell, Vicker’s Rockwell, Superficial Rockwell etc.
Max. height of specimen220mm
Max. width of specimen130mm
Dimensions520×280×700mm
Weight65Kg
Power supplyAC 220V, 50-60HZ
Standard AccessoriesDiamond Rockwell hardness indenter, Standard Rockwell hardness block,∮1.5875mm hard alloy ball indenter,  Testing table (big, medium, “V”), Weight (1, 2, 3, 4, 5),  RS232 cable, Power cord,  etc.


Main accessories

Diamond Rockwell hardness indenter,

Standard Rockwell hardness block,

∮1.5875mm hard alloy ball indenter, 

Testing table (big, medium, “V”),

Weight (1, 2, 3, 4, 5), 

RS232 cable,

Power cord,  etc

Require More Customized Solutions?

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Beijing United Test Co., Ltd.