Model No. 900-331
This hardness tester comprises the very best in "state of the art" design along with dynamic precision only found at Phase II. The 900-331 Rockwell scale hardness tester is easy to operate, yet engineered to obtain highly sensitive and accurate readings. Conforming to ASTM E-18 Rockwell Hardness standards, the 900-331 tester will offer unmatched repeatability in all standard Rockwell Hardness scales (table shown below). A perfect, rugged performer suited for any environment including heat treat facilities, tool rooms, workshops, laboratories and inspection labs.
Features:
- Direct analog dial reading
- Advanced design, easy to operate
- Engineered to obtain highly sensitive and accurate readings
- Conforms to ASTM E-18
Perfect for laboratories, workshops, tool rooms, inspection labs, etc.
Specifications:
| Minor Load | 10Kgf |
| Major Load | 60Kgf, 100Kgf, 150Kgf |
| Test Force Application | Dead Weight |
| Test Force Control | Hydraulic Dashpot System |
| Results Display | Analog Dial Gage |
| Vertical Capacity | 6.7 in. |
| Throat Depth | 6.6 in. |
| Height | 30.0 in. |
| Width | 8.50 in. |
| Depth | 20.0 in. |
| Shipping Weight | 242 lbs. |
Accessories:
- C-scale Diamond Indentor
- 1/16" Ball Indentor
- 3- HRC Test Blocks
- 1- HRB Test Block
- 1-HRA Test Block
- Test Table 5.87" (150mm)
- Flat Anvil 2.5" (63mm)
- Std. Vee Anvil
- Accessory Case
- Dust Cover
Options:
- NIST/ASTM certified hardness test blocks, penetrators and kits are available.
- This model is available with ASTM E18-08B or current certification
| Scale Symbol | Indenter Type Ball dimensions indicate diameter |
Preliminary Force N (kgf) |
Total Force N (kgf) |
Typical Application |
| A | Spheroconical Diamond | 98.07 (10) | 588.4 (60) | Cemented carbides, thin steel and shallow case hardened steel |
| B | Ball 1/16" (1.588mm) | 98.07 (10) | 980.7 (100) | Copper alloys, soft steels, alum. Alloys, malleable iron, etc. |
| C | Spheroconical Diamond | 98.07 (10) | 1471 (150) | Steel, hard cast irons,pearltic malleable iron, titanium, deep case hardened steel & other material 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 | Ball - 1/8" (3.175mm) | 98.07 (10) | 980.7 (100 | Cast iron, aluminum&magnesium alloys and bearing metals |
| F | Ball - 1/16" (1.588mm) | 98.07 (10) | 588.4 (60) | Annealed copper alloys, and thin soft sheet metals |
| G | Ball - 1/16" (1.588mm) | 98.07 (10) | 1471 (150) | Malleable irons, copper-nckel-zinc and cupronickel alloys |
| H | Ball - 1/8" (3.175mm) | 98.07 (10) | 588.4 (60) | Aluminum, zinc and lead |
| K | Ball - 1/8" (3.175mm) | 98.07 (10) | 1471 (150) | Bearing metals and other very soft or thin materials. Use smallest ball and heaviest load that does not give anvil effect |
| L | Ball - 1/4" (6.350mm) | 98.07 (10) | 588.4 (60) | |
| M | Ball - 1/4" (6.350mm) | 98.07 (10) | 980.7 (100) | |
| P | Ball - 1/4" (6.350mm) | 98.07 (10) | 1471 (150) | |
| R | Ball - 1/2" (12.70mm) | 98.07 (10) | 588.4 (60) | |
| S | Ball - 1/2" (12.70mm) | 98.07 (10) | 980.7 (100) | |
| V | Ball - 1/2" (12.70mm) | 98.07 (10) | 1471 (150) |
