Digital Superficial Rockwell Hardness Tester Phase II - Model 900-346
Digital Superficial Rockwell Hardness Tester Phase II - Model 900-346
Part #:900-346
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Key Features
- Digital Superficial Rockwell hardness tester
- Electronic digital display
- Superficial Rockwell testing
- Automatic dwell timing
- Digital hardness readout
- Hardness scale conversion
- Statistical functions
- User-friendly menu operation
- Precision load application
- Manufactured utilizing the guidelines of ASTM E18
Overview
The Phase II Model 900-346 Digital Superficial Rockwell Hardness Tester is a bench-top digital hardness testing system designed specifically for Superficial Rockwell hardness testing. It is ideal for testing thin materials, surface-hardened components, plated parts, and finished products where lower test forces are required than those used in conventional Rockwell testing.
The Model 900-346 features a digital display, automatic dwell timing, selectable superficial test forces, statistical functions, hardness scale conversion, and user-friendly operation. The tester is designed for quality control laboratories, production environments, inspection departments, and research facilities. Phase II states the instrument is manufactured utilizing the guidelines of ASTM E18.
Applications
The Model 900-346 is commonly used for:
- Thin sheet metal
- Surface-hardened materials
- Carburized parts
- Nitrided components
- Plated materials
- Precision machined parts
- Stainless steel
- Brass
- Aluminum alloys
- Finished production components
Industries Served
- Aerospace
- Automotive
- Medical Device Manufacturing
- Electronics
- Heat Treating
- Precision Machining
- Tool & Die
- Metal Fabrication
- Quality Assurance Laboratories
- Research Laboratories
Included Accessories
- Diamond Superficial Rockwell indenter
- 1/16 in. ball indenter
- HR15N hardness test block
- HR30N hardness test block
- HR30T hardness test block
- Large flat anvil
- V-anvil
- Test table
- Dust cover
- Operator's manual
Optional Accessories
Available accessories include:
- Certified Superficial Rockwell hardness test blocks
- Replacement diamond indenters
- Replacement ball indenters
- Additional anvils
- Calibration accessories
- Hardness tester accessories
Calibration & Verification
Routine verification should be performed using certified Superficial Rockwell hardness reference blocks that correspond to the scales being tested. Regular inspection of the indenter, anvils, and load application system helps ensure accurate and repeatable measurements.
WESTport provides:
- Certified Superficial Rockwell hardness test blocks
- Calibration and verification services
- Replacement indenters
- Repair services
- Technical application support
Why Buy from WESTport?
WESTport supports your hardness testing program with:
- Certified Superficial Rockwell hardness test blocks
- Calibration and repair services
- Replacement indenters and accessories
- Technical application assistance
- Responsive customer support
- Long-term product support
Frequently Asked Questions
What types of materials is the 900-346 designed to test?
The Model 900-346 is intended for thin materials, surface-treated components, and finished parts requiring lower Rockwell test forces.
Which test forces are available?
The tester uses a 3 kgf minor load with selectable 15, 30, and 45 kgf major loads.
Is the tester suitable for production inspection?
Yes. The digital display, adjustable dwell time, and straightforward operation make it suitable for both laboratory and production quality control.
Can WESTport calibrate the 900-346?
Yes. WESTport provides calibration services, certified hardness test blocks, replacement accessories, repair services, and technical support.
Which testing standard does the instrument follow?
Phase II states the Model 900-346 is manufactured utilizing the guidelines of ASTM E18.
Explore our complete line of hardness testers and certified hardness test blocks, or call 1-888-400-4243 to speak with a hardness testing specialist.

Specifications
| Test Method | Superficial Rockwell |
|---|---|
| Preliminary Test Force | 3 kgf |
| Total Test Force | 15, 30, 45 kgf |
| Resolution | 0.1 HR |
| Dwell Time | Adjustable |
| Loading Method | Load Cell Closed Loop |
| Data Output | Digital |
| Max. Test Height | 6.50 in. (165 mm) |
| Throat Depth | 5.30 in. (135 mm) |
| Dimensions (L×W×H) | 700mm×250mm×600mm |
| Power Supply | 110 VAC, 60 Hz |
| Weight | 220 lbs |
| Standards | ASTM E18 Guidelines |