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:
- NIST/ASTM certified hardness test blocks, penetrators and kits are available.
- This model is available with ASTM E18-20 certification
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) |