BS EN ISO 527-1:2019

What is ISO 527-1 – Plastics tensile properties about?  

ISO 527-1 series focuses on determination of tensile properties of plastics. ISO 527-1 specifies the general principles for determining the tensile properties of plastics and plastic composites under defined conditions. 

The methods are selectively suitable for use with the following materials: 

• Rigid and semi-rigid moulding, extrusion and cast thermoplastic materials, including filled and reinforced compounds in addition to unfilled types, rigid and semi-rigid thermoplastics sheets and films 
• Rigid and semi-rigid thermosetting moulding materials, including filled and reinforced compounds; rigid and semi-rigid thermosetting sheets, including laminates 
• Fibre-reinforced thermosets and thermoplastic composites incorporating unidirectional or non-unidirectional reinforcements, such as mat, woven fabrics, woven rovings, chopped strands, combination, and hybrid reinforcement, rovings and milled fibres; sheet made from pre-impregnated materials (prepregs) 
• Thermotropic liquid crystal polymers 

Note: ISO 527-1 are not normally suitable for use with rigid cellular materials for which ISO 1926 is used, or for sandwich structures containing cellular materials. 

Who is ISO 527-1 - Plastics tensile properties for? 

ISO 527-1 on plastics tensile properties is useful for: 

• Plastic manufacturers 
• Plastic testing laboratories 
• The plastic industry 
• Testing laboratories for plastics 

Why should you use ISO 527-1 - Plastics tensile properties?  

Tensile strength is the ability of plastic material to withstand maximum amount of tensile stress while being pulled or stretched without failure. It is the point when a material goes from elastic to plastic deformation. 

ISO 527-1 provides you with principles and test methods to determine tensile properties of plastic and plastic products. These methods are used to investigate the tensile behaviour of the test specimens and for determining the tensile strength, tensile modulus, and other aspects of the tensile stress/strain relationship under the conditions defined. 

ISO 527-1 ensures the general principles to determine the tensile strength of the plastic as the general principles can help the user to conduct the test in a proper manner and can get the determined results. 

What’s changed since the last update?  

BS EN ISO 527-1:2019 supersedes ISO 527-1:2012. BS EN ISO 527-1:2019 includes some technical changes with respect to ISO 527-1:2012. These include: 

• An error in Figure 1 concerning εtM has been removed 
• The inconsistency concerning the accuracy of the elongation used in the calculation of the tensile modulus between 5.1.5.1, Figure 1 and Annex C has been removed. For gauge lengths L0 ≤ 50 mm, the accuracy is set to ±1 μm 
• The normative references (see Clause 2) have been updated 
• Minor editorial changes have been applied 
• Language has been clarified