Adhesion Testing Device
Category：Material Strength Tester
Introduction
The adhesive strength testing apparatus is used to test the adhesive strength of galvanized layers conforming to ASTM A123/A123M and DIN 50978 standards. This apparatus is suitable for all flat hot-dip galvanized surfaces.
Application
It can be used with all flat hot-galvanized surface areas. Steel pipes can also be tested, but if the sample is less than 200 mm, a V-bearing must be used instead of the usual three-point support.
Standard
DIN 50978: Testing of metallic coatings; adherence of hot dip zinc coatings
ASTM A123/A123M: Standard Specification for Zinc (Hot‑Dip Galvanized) Coatings on Iron and Steel Product
Parameters
| Parameter | Specification |
| Type of Specimen | Plates, component parts |
| Testing Standards | DIN 50978, ASTM A123/A123M |
| Sensory Functions | – |
| Power Input | – |
| Dimensions (Testing Device) | 250 × 60 × 80 mm (W × D × H) |
| Weight (Testing Device) | Approx. 1 kg |
Test methods
This device is suitable for all flat hot-dip galvanized surfaces. Steel pipes can also be tested; however, if the specimen is smaller than 200 mm, a V-shaped bearing must be used instead of the standard three-point support. The special design of the apparatus allows testing in all positions, including with the head facing forward.
A marking template is used to indicate the impact points in the test area according to the applied standard. The device is cocked and adjusted between two marked points. When triggered, the hammer strikes the specimen, leaving a linear indentation. This process is repeated over the distance between the marked points. If the galvanized coating shows no noticeable flaking between impacts, the adhesion strength is considered good.
If only a rough estimation of adhesion strength is required, the marking template is not necessary.
FAQ
1. What is this product?
It is a mechanical adhesion testing device used to evaluate the bonding quality of hot-dip galvanized coatings.
2. What is this product used for?
It is used to determine whether galvanized zinc coatings properly adhere to steel substrates.
3. Why is this product important?
Adequate coating adhesion ensures corrosion protection and long-term durability of galvanized products.
4. What industries is this product suitable for?
It is suitable for galvanizing plants, steel manufacturers, quality inspection agencies, and research laboratories.
5. What types of this product are available?
Standard flat-surface models and configurations with optional V-bearing for pipe testing are available.
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