About Harboro Rubber Engineering in Rubber      Contents      Introduction      Uses of Rubber      Processing Rubber      Designing With Rubber      Selecting / Specifying Rubber      Quality In Rubber      Rubber Directory      Health & Safety      Measuring Properties          Measuring Properties          Measuring Hardness          Tensile Strength          Elongation          Modulus          Compression Set          Permanent Set (Tensile Set)          Density (Specific Gravity)          Resilience          Chemical Resistance          Fluid Resistance          Weather Resistance          Ozone Resistance          Electrical Properties          Tear Strength          Abrasion Resistance          Electric Strength          Flame Resistance          Low Temperature          Staining          Accelerated Ageing      Glossary of Terms      Request A Copy Contact Information

Modulus   Property: Modulus Method of Measurement: Modulus is measured as the force per unit area required to extend a rubber to a stated percentage of its original length e.g. 100%, 200% or 300% (modulus in rubber is non-linear). It is often written as M100 = 3.0MPa (i.e. modulus at 100% = 3.0MPa) ASTM REFERENCE: D412 BS REFERENCE: BS903 Part A2 ISO REFERENCE: ISO37* * technically equivalent ** identical