Laboratory of Wood Technology
Report No: 11-40/EK/1424-2
Date of issue: 21.11.2025
Pages: 4
Customer: J. H. Consult OÜ, reg kood: 11014324, kmkr nr: 11014324
Customer address: Sireli street 2/6, Näpi borough, 44305 Rakvere , Lääne-Viru maakond
Customer contact: Joonas Hiie,
[email protected], tel nr +37253028111
Test subjects: 1. Eucatex Eucalyptus hardboard, 4.8 mm
2. Betanzos Eucalyptus hardboard, 4.8 mm
Test methods: Perpendicular Tensile Strength test
Testing objective: EVS-EN 319:2000
Test specimen(s) description and marking used in current report:
1. Hardboard with marking of EU2747
2. Hardboard with marking of BHB
Appendices:
Appendix 1 Test results
Approved by:
Given report shall not be reproduced without written Silvi Treial, Early Stage Researcher
approval of the laboratory.
TTALLINN UNIVERSITY OF TECHNOLOGY | DEPARTMENT OF MATERIALS
AAND ENVIRONMENTAL TECHNOLOGY
TTeaduspargi 5 Phone +372 620 2910
112618 Tallinn, Estonia E-mail
[email protected]
Registry code 74000323 www.taltech.ee
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APPENDIX 1.
Specimen(s) description
Hardboards with dimensions of 50 x 50 mm, glued into metal testing blocks with Loctite Original super
glue.
Before testing the specimens were conditioned to relative humidity of 65% and a temperature of
20°C.
Test description
Specimens were placed between the grips and during the testing a force is applied until the rupture of
the specimens occured. The maximum load should be reached within 60 ± 30 s. The test speed was
2 mm/min.
Test parameters
Test Machine ZwickRoell Z050
Test type EN 319:2000
Test date 21.11.2025
Test results
Tensile strength (𝑓𝑡 ) is calculated using the next formula:
𝐹
𝑚𝑎𝑥
𝑓𝑡 = 𝑎∗𝑏
Table 1 below shows all the testing results.
Table 1. Test results
Specimen 𝐹𝑚𝑎𝑥 (N) 𝑓𝑡 (N/𝑚𝑚2 ) a (mm) b (mm) A (𝑐𝑚2 ) 𝑡𝑇𝑒𝑠𝑡 (s)
EU 2747 2580 1,03 50 50 25 50,55
BHB 2450 0,98 50 50 25 40,23
Both hardboard specimens had core material breakage (Figure 1) with the specimen of EU 2474 showing
higher values for both maximum force and tensile strength.
TALLINN UNIVERSITY OF TECHNOLOGY |
DEPARTMENT OF MATERIALS AND ENVIRONMENTAL TECHNOLOGY
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Figure 1. Specimen after testing, showing core material breakage.
TALLINN UNIVERSITY OF TECHNOLOGY |
DEPARTMENT OF MATERIALS AND ENVIRONMENTAL TECHNOLOGY