Sinowon SU-300H Manual Ultrasonic Hardness Tester

Sinowon SU-300H Manual Ultrasonic Hardness Tester

Sinowon SU-300H Manual Ultrasonic Hardness Tester

The SU-300H utilizes a modular design which works with these manual probes HP-1K, HP-2K, HP-5K and HP-10K and can be used to test the hardness of small forgings, cast material, weld inspection, heat affected zones, Ion-nitrided stamping dies and molds, forms, presses, thin walled parts, bearings and tooth flanks.

The SU-300H can test the hardness of ferrous metals, non ferrous metals and alloys as well as HRA, HRB, HRC, HV, HBW and HS on site, in the lab or assembly line.

The SU-300H can be upgraded with the use of a these motorized probes: MP-300, MP-500, MP-800 and MP-1000, effectively making it function the same as the SU-300M.


  • Accuracy: ±3% HV, ±1.5HR, ±3%HB
  • Microscopic Indentation: Only high power microscopes can observe the indentation
  • Quick Measurements: Results in 2 seconds
  • Large LCD Display: Directly displays measurement results, times count, maximum, minimum, average and deviation.
  • User Friendly Operation: Needs minimal training
  • Warranty: 2 year warranty for main unit (excludes probe)
  • Storage: Saves 1000 groups of measurement data
  • Simple Calibration: Save 20 groups of calibration data for improved efficiency

Wide Range of Application, Powerful Function:


Amazing Design, Exquisite Workmanship

Silicon Cover and Glass Front Panel
Environmentally Friendly Silicon Buttons


Product Name: Manual Ultrasonic Hardness Tester
Model: SU-300H
Part Number: 882-141H
Optional Probes: Manual Probes: 10N, 20N, 49N, 98N
Motorized Probes: 3N, 5N, 8N, 10N
Measuring Ranges (ASTM): HBS: 100-500; HV: 100-1500; HRC: 20-68; HRB: 55-100; HRA: 37-85; Mpa: 255-2180N/mm
Measuring Accuracy: Scales < 250HV 250-500HV 500-800HV > 800HV
HV0.1 6 7 8 9
HV0.3 6 7 8 9
HV0.8 5 5 6 7
HV1 5 5 6 7
HV5 5 5 6 5
HV10 5 5 5 5
Hardness Scales: Vickers(HV); Rockwell C(HRC); Rockwell A(HRA); Rockwell B(HRB); Brinell(HB)
LCD: Color Screen
Data Display: LCD Backlight, Adjustable
Languages: Chinese, English, German, Portugese, Turkish
Data Output: RS232 Hyper Terminal / Bluetooth Printer
Print: Bluetooth
Data Storage: Saves 1000 groups of measuring data and 20 groups of calibration data
Word Input: Letters and numerals
Working Environment: Temperature: 14°F - 122°F / -10°C - 50°C; Humidity: 30 - 80% R.H
Battery Voltage: Rechargeable Lithium battery; Voltage: 4.2V, 4800mAh
Charger Voltage: AC 110V / 60 Hz, 220V / 50 Hz
Main Unit Dimensions: Main Unit: 6.3" x 3.15" x 1.2" / 160 x 80 x 30mm; Probe: 0.9" x 6" / 22 x 153mm
Main Unit Weight (no probe): 1.1 lbs. / 0.5 kg
Shipping Dimensions: 12.6" x 17" x 6.1" / 320 x 430 x 155 mm
Shipping Weight: 9.5 lbs. / 4.3kg

The SU-300H Kit Includes:

  • SU-300H Instrument
  • Standard Rockwell Block
  • 20N Manual Probe
  • USB Charger
  • Probe Cable
  • COM Cable
  • Screw
  • Anti Vibration Case
  • Packing List
  • Qualification Certificate
  • Operation Manual
  • Warranty Card


Note: Due to recent increases in tariffs on imports from China, we are now required to collect a 10%* fee to cover additional duties and taxes.


*subject to change

We have a discounted surplus Sinowon SU300 UCI available for purchase. Click the below link to see what we have in stock:

Hardness Testing Bargain List

Product Literature

Description Part # Saved Price Select Option Add to
SU-300H Manual Ultrasonic Hardness Tester HT-SW-SU300H Request Pricing