Digital TWIN Rockwell/ Superficial Rockwell Hardness Tester/Twin Rockwell Hardness Testing

Model No. 900-440

Features

  • Reads in all Rockwell Hardness Scales and Superficial Rockwell Hardness Scales. These include the popular HRA, HRBW, HRC, HRN and HRT Hardness scales.
  • Automatic conversions to all Rockwell/Superficial Rockwell Scales, as well as to Brinell (HB) and Vickers (HV).
  • Load Cell driven system provides precise control of test force application
  • Touch Screen selectable system
  • Upper/Lower Limit Settings


Features: Model No. 900-440 TWIN Rockwell/Superficial Rockwell Hardness Tester

This digital Rockwell hardness tester with fully automated load/unload procedures affords highly sensitive and accurate readings. Micro computer controlled Touch Screen with USB output to flash drive. Utilizing the guidelines of ASTM E-18, the 900-440 digital Rockwell hardness tester offers programmable scale conversions, dwell times, statistical capabilities and test counter.

Capable of testing in all of the regular Rockwell and Superficial Rockwell hardness scales.

For full conformance to the latest E18-20 specification, please call (201) 962-7373

Direct Loading Method With Load-Cell Instead Of Dead Weight System. High Speed Test Cycle and Extremely Accurate Loading Control

  • Automatic conversions to Rockwell, Superficial Rockwell, Brinell (HB) and Vickers (HV) Hardness Scales
  • Touch Screen selectable system
  • Upper/Lower Limit Settings
  • Test resolution: 0.01HR Rockwell unit;
  • Operation temperature:50° – 95°F (10ᵒC~35ᵒC)
  • Ambient environment: clean, no vibration, no strong magnetic field, and no corrosive medium;
  • Power supply:single phase, AC, 110-220 with manual change, 50~60Hz, 4A;

Minor Load 3kgf / 10 Kgf
Major Load 60 Kgf, 100 Kgf, 150 KGF, 15KGF, 30KGF, 45KGF
Test Force Application Load Cell Closed Loop
Test Force Control Motorized
Results Display Hi Def LCD Digital Readout
Resolution 0.1HR
Vertical Capacity 8.0”
Throat Depth 7.8”
Height 22”
Width 8”
Depth 31”
Weight 175 lbs

Accessories: Included

  • C-scale Diamond Indenter
  • 1/16” Ball Indenter
  • 2- HRN test Blocks
  • 3- HRT Test Block
  • Test Table 5.87” (150mm)
  • Flat Anvil 2.5” (63mm)
  • Std. V- Anvil
  • Dust Cover
  • Accessory Case

Options:

Rockwell Hardness & Superficial Rockwell Hardness Tester Scale/Indentor/Load chart

Scale Symbol Indentor Type Preliminary Force N (kgf) Total Force N (kgf) Typical Applications
A Spheroconical Diamond 98.07 (10) 588.4 (60) Cemented carbides, thin steel, and shallow case hardened steel
B 1/16” Carbide Ball 98.07 (10) 980.7 (100) Copper alloys, soft steels, aluminum alloys, malleable iron, etc.
C Spheroconical Diamond 98.07 (10) 1471 (150) Steel, hard cast irons, pearlitic malleable iron, titanium, deep case hardened steel, other harder than HRB 100
D Spheroconical Diamond 98.07 (10) 980.7 (100) Thin steel and medium case hardened steel, and pearlitic malleable iron
E 1/8” Carbide Ball 98.07 (10) 980.7 (100) Cast Iron, Aluminum and magnesium alloys, and bearing metals
F 1/16” Carbide Ball 98.07 (10) 588.4 (60) Annealed copper alloys and thin soft sheet metals
G 1/16” Carbide Ball 98.07 (10) 1471 (150) Malleable irons, copper-nickel-zinc and cupro-nickel alloys
H 1/8” Carbide Ball 98.07 (10) 588.4 (60) Aluminum, zinc and lead
K 1/8” Carbide Ball 98.07 (10) 1471 (150) Bearing Metals and other very soft or thin materials. Use smallest ball and heaviest load that doesn’t give anvil effect.
L ¼” Carbide Ball 98.07 (10) 588.4 (60)
M ¼” Carbide Ball 98.07 (10) 980.7 (100)
P ¼” Carbide Ball 98.07 (10) 1471 (150)
R ½” Carbide ball 98.07 (10) 588.4 (60)
S ½” Carbide ball 98.07 (10) 980.7 (100)
V ½” Carbide ball 98.07 (10) 980.7 (150)
15N Spheroconical Diamond 29.42 (3) 147.1 (15) Similar to A, C and D scales but for thinner gage material.
30N Spheroconical Diamond 29.42 (3) 294.2 (30)
45N Spheroconical Diamond 29.42 (3) 441.3 (45)
15T 1/16” Carbide Ball 29.42 (3) 147.1 (15) Similar to B, F and G scales but for thinner gage material.
30T 1/16” Carbide Ball 29.42 (3) 294.2 (30)
45T 1/16” Carbide Ball 29.42 (3) 441.3 (45)
15W 1/8” Carbide Ball 29.42 (3) 147.1 (15) Very Soft Material
30W 1/8” Carbide Ball 29.42 (3) 294.2 (30)
45W 1/8” Carbide Ball 29.42 (3) 441.3 (45)
15X ¼” Carbide Ball 29.42 (3) 147.1 (15)
30X ¼” Carbide Ball 29.42 (3) 294.2 (30)
45X ¼” Carbide Ball 29.42 (3) 441.3 (45)
15Y ½” Carbide Ball 29.42 (3) 147.1 (15)
30Y ½” Carbide Ball 29.42 (3) 294.2 (30)
45Y ½” Carbide Ball 29.42 (3) 441.3 (45)