Hardness Testing

Equotip 550 Leeb

Hardness Testing

Equotip 550 Leeb

Highly robust and advanced Leeb measuring system

Swiss quality, accuracy, and reliability combined with powerful software features

World's broadest selection of probes and conversion tables

A fully rugged casing and long-lasting probes

Applications:

Hardness testing of casts, flanges, shafts, and bars/pipes / Near-line Quality Control / Heat-treated surfaces

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The highest accuracy, durability, and functionality from the inventor of the Leeb method

Reliability

The unmatched lifespan of probes and impact bodies, lasting four times longer than others on the market.

Productivity

Comes with the most complete probe portfolio, the broadest material conversion tables including Proceq's own research and world's widest standard conversion.

User Experience

Ready-to-go reports through powerful built-in reporting feature, along with fully customizable views, multiple wizards, and material selection assistant.

Equotip 550 Platform

Tech Specs

Equotip 550 Platform

Display

7” color capacitive touchscreen

Instrument protection

- IP54, fully rugged with shock absorbing casing,
- Scratch-resistant Gorilla® Glass screen protection,
- Circuit and connector protection against dust, debris, chemicals and voltage spikes
- Foldable additional screen cover for additional protection during storage and transportation

Memory

Internal 8 GB flash memory (>1’000’000 measurements)

Combination with another testing method

UCI, Portable Rockwell (PRT)

Connectivity

Ethernet & USB-B (PC connection), USB-A (PRT), Probe-specific slots

Battery

3.6V, Li-Ion, 14’000 mAh

Battery lifetime

> 10h (in standard operating mode)

Charging time

< 9h, < 5.5 h (External quick charger)

Power input

12V +/- 25% / 1.5A

Dimensions

250 x 162 x 62 mm / 9.87 x 6.37 x 6.44 in

Weight

1’525 g / 3.35 lbs. (incl. battery)

Humidity operation

<95% RH, non-condensing

Operating temperature

(-) 10°C + 50°C / 14°F – 122°F

Certification

CE, KC, FCC

Equotip 550 Software Features

- Automatic compensation for impact direction (except DL probe)
- Fully customizable reporting
- Customizable views
- Verification wizard
- Measurement wizard
- Mapping wizard
- Integration in automated testing environments (incl. remote control)
- Custom conversion curves (1-point, 2-point, polynomial)
- Built-in pdf creator

Conversion curves applicable for materials

- Steel and cast steel
- Work tool steel
- Stainless steel
- High alloy steel (Leeb D only: P/T91-92, 20Cr13, GH4145, C422, 630 grade, 616 grade)
- Grey Cast Iron (Lamellar, Nodular)
- Cast aluminium
- Brass Cu/Zn Alloys
- Wrought copper alloys

Languages

English, German, French, Italian, Spanish, Portuguese, Turkish, Chinese, Korean, Russian, Japanese, Polish, Czech

Regional settings

Metric and imperial units, multi-language and time-zone

Audio support

Full digital audio

Desktop Software (Windows)

PC Software

Equotip Link for data download, management and export (CSV, PNG), Conversion curve management, and for upgrades of constantly expanding Equotip and Equotip Link Software

Language support

English, Chinese, Czech,German, Spanish, French, Italian, Korean, Japanese, Polish, Portugese, Russian, Turkish

Instrument

Tech Specs

Native Scale

HLx (x=C, D, DC, DL, E, G, S)

Conversion scales

HB, HV, HRA, HRB, HRC, HS, MPA (σ1, σ2, σ3)

Measurement range

100-999 HLx

Indenter

Tungsten carbide (D, DC, DL, G, C), Polycristalline diamond (E), Silicon Nitride (S)

Impact energy / Test force

90 Nmm (G)
11 Nmm (D, DC, DL, S, E)
3 Nmm (C)

Accredited calibration

ISO/IEC 17025

Standard compliance

ASTM A956
DIN EN ISO 16859
GB/T 17394
JB/T 9378

Guidelines

ASME CRTD-91
ASTM A370
DGZfP Gudeline MC 1
VDI / VDE Gudeline 2616 Paper 1
Nordtest Technical Reports 99.12, 99.13, 99.36

Conversion standards

ASTM E140
ISO 18265
DL/T 1845 (Leeb D only)
Proceq's own conversion curves

Measurement resolution

1 HLx/HV/HB; 0.1 HRC/HRB/HS 1 N/mm 2 (Rm)

Measuring accuracy

± 4 HLx (0.5% @850 HLx)

Measurement deviation (E)

Lower than DIN EN ISO 16859

Coefficient of variation (R)

Lower than DIN EN ISO 16859

Weight

57 g / 2 oz

Dimensions

41 mm x 20 mm x 147 / 1.61 in x 0.79 in x 5.79

PDF Version

Equotip Brochure

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Standards & Guidelines

Standards

ASTM A 370

ASTM A 956

ASTM E 140

DIN 50156

DL/T 1845 ( China )

GB/T 17394

ISO 16859

ISO 18265

JB/T 9378

Guidelines

ASME CRTD-91

DGZfP Guideline MC 1

Nordtest Technical Reports 424-1, 424-2, 424-3

VDI / VDE Guideline 2616 Paper 1

FAQ

What parameters are important when choosing the right Leeb probe?

Minimal mass of the tested piece
Minimum requirements for the surface roughness (and corresponding time)
Sample accessibility
Materials microstructure (coarser grains are preferably measured by the probes with higher...

What Leeb probe has the lowest impact energy?

It is Probe type C with 3 Nmm (vs. 11 nMm for probe D), its suitable for surface-treated materials or small objects, however it must fulfill the requirements specified by the standards and by Proceq.

Is Equotip Leeb easy to use?

Yes, very easy and has very high repeatability. The exception is a DL probe, which has presumably higher inertia due to the elongated impact body and unstable base of the probe. Due to this, the probe is known to be...

Can small objects be investigated with Leeb?

Yes, but only if they follow the requirements specified by Proceq. Samples can be measured as coupled and uncoupled.

The wall thickness and mass of the test object can influence hardness testing according to Leeb or UCI....