Conical Bending Mandrel Tester
Paint & Coating Flexibility / Adhesion / Elongation Tester
4B Testing Equipments Pvt. Ltd., a manufacturer of laboratory and quality testing equipment in Faridabad, Haryana, India, offers the Conical Mandrel Bend Tester for evaluating the flexibility, elasticity, elongation, adhesion and resistance to cracking or detachment of paint, varnish and protective coatings applied on metal panels.
The Conical Mandrel Tester / Conical Bend Tester bends a coated test panel around a precision conical mandrel. Because the mandrel diameter continuously changes from the larger to the smaller end, coating performance can be evaluated over a range of deformation in a single test operation
Description
Paint & Coating Flexibility / Adhesion / Elongation Tester
4B Testing Equipments Pvt. Ltd., a manufacturer of laboratory and quality testing equipment in Faridabad, Haryana, India, offers the Conical Mandrel Bend Tester for evaluating the flexibility, elasticity, elongation, adhesion and resistance to cracking or detachment of paint, varnish and protective coatings applied on metal panels.
The Conical Mandrel Tester / Conical Bend Tester bends a coated test panel around a precision conical mandrel. Because the mandrel diameter continuously changes from the larger to the smaller end, coating performance can be evaluated over a range of deformation in a single test operation
The 4B Conical Mandrel Bend Tester is a manually operated laboratory instrument used to determine the resistance of paint, varnish and protective coatings to cracking, peeling, flaking and detachment when subjected to bending deformation.
Feature
- Precision-machined conical mandrel
- Robust and rigid construction
- Easy specimen clamping
- Smooth manual bending operation
- Graduated scale for identifying failure location
- Tests a range of bending diameters in one operation
- Suitable for paint and coating inspection
- Helps identify cracking and coating detachment
- Suitable for flexibility and elongation evaluation
- Easy visual examination of coating failure
- Compact laboratory design
- Low-maintenance operation
- Suitable for QC, R&D and production laboratories
Testing Standards
Testing Standards
The Conical Mandrel Bend Tester is commonly used according to:
- ASTM D522 – Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings
- ASTM D1737 – Elongation of Attached Organic Coatings with Mandrel
- ISO 6860 – Paints and varnishes — Bend test (conical mandrel)
- BS 3900 E11 – Determination of resistance to bending
Technical Specialization
Parameter | Specification |
Product Name | Conical Mandrel Bend Tester |
Test Type | Bending / Flexibility / Elongation |
Mandrel Type | Conical |
Large-End Diameter | 38 ± 0.1 mm |
Small-End Diameter | 3.1 ± 0.1 mm |
Mandrel Length | 203 ± 0.3 mm |
Test Panel Size | Up to approx. 200 × 100 mm* |
Maximum Panel Thickness | Approx. 0.8 mm* |
Operation | Manual |
Result Evaluation | Visual crack / detachment inspection |
Construction | Rigid laboratory construction |
Scale | Graduated mandrel scale |
Application | Paints, coatings, varnishes and coated metal panels |
Application
- Paint & Coating Industry – Flexibility and crack resistance of coatings.
- Automotive Industry – Testing automotive paints and protective coatings.
- Metal Industry – Testing coated steel and aluminium panels.
- Powder Coating Industry – Evaluating coating flexibility after bending.
- Varnish & Protective Coatings – Checking film resistance to cracking and peeling.
- R&D & Quality Control Laboratories – Coating development and batch quality testing.
