The ISO 1798 standard, developed by the International Organization for Standardization (ISO), describes a test method for determining the strength and deformation properties of flexible cellular materials when a test piece is extended at a constant rate until it breaks.
For the purposes of this standard,
The combination of high ultimate tensile strength and high elongation is characteristic of high toughness materials. Elongation at break indicates how much bending a material can withstand without breaking. The elongation measured at break values is an indicator of the ductility of a polymer. Elongation at break is important in components that absorb energy through plastic deformation. High elongation at break is important for plastic hinges.
Elongation at break, also known as elongation at break or tensile elongation at break, is the ratio between the initial length and the length that increases after the specimen under test is fractured at a controlled temperature. It relates to the ability of a plastic specimen to resist shape changes without cracking.
The elongation at break is measured as a percentage (the ratio of the elongation vs. initial dimension when the break occurs). Maximum elongation is also expressed as strain to failure. Final elongation values of several hundred percent are common for elastomers and film or packaging polyolefins. Rigid plastics, especially fiber-reinforced ones, exhibit values below 5 percent. Fibers have a low elongation at break, while elastomers have a high elongation at break.
Tensile tests are performed to determine the force required to break a sample and how far the sample has stretched to that breaking point. Generally, tensile test methods are applied to measure the elongation at break of materials. Besides the ISO 1798 standard, other standards used are ASTM D638 Standard test method for tensile properties of plastics and ISO 527-1 Determination of tensile properties - General principles standards. Apart from these, other test methods are also used.
Within the scope of ISO 1798 standard, our organization, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, It also provides testing services for the determination of tensile strength and elongation at break of flexible cellular polymeric materials.r.
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