Products Directory   |    Rubber Trade   |    Classifieds   |    E-Rubber Shop   |    E-Rubber Newsletter   |    Rubber Jobs   |    Home

IRD Services   |    Join Free   |    Add Your Company   |    Premium Membership   |    Advertise With Us   |    Discussion Forum

   Quick Products:   Adhesives, Auto & Cycle Parts, Rubber Beltings, More...
  Welcome Guest Login
   Forgot Password | Join Free 18 July,2024

Ask Rubber Experts   |   Rubber News   |    Rubber Prices   |    IRD Network Member      Rubber Events > Rubber Engineering > Elastromer Properties

Elastomer Properties - Shear Modulus/Tear Strength/Dynamic Stress-Strain

Shear Modulus: The shear modulus is an important property in design calculations for elastomers used in shear. The test methods typically require that the test sample be bonded to metal plates. The resulting ratio of the shear stress to shear strain is the shear modulus.

Test Methods:

  • ISO 1827

Tear Strength: For considerations of removing a molded part from the production mold, or for determining the ease of which a tear can start and propagate in application, tear strength is an important property. Different test methods use different shapes and methods for applying a tearing force.

Test Methods:

  • ISO 34, 816
  • ASTM D624

Dynamic Stress-Strain: In cyclic or dynamic applications, the viscoelastic properties of elastomers are very important. Lost energy, in the form of heat, arises from molecular friction as a result of an applied load. The percentage energy loss per cycle is known as “hysteresis.” When the loading and unloading cycle continues, the shape and position of the hysteresis curve changes.

The response of a specimen to a sinusoidal deformation can best exhibit the dynamic properties of an elastomer. The elastic component of the elastomer is responsible for the in-phase stress, while the viscous component is responsible for the out-of phase stress. The amount by which the strain response lags the resultant of the two stresses (in-phase and out-of-phase) is known as the phase or loss angle, š. The more viscous an elastomer, the greater the phase or loss angle. The tangent of this angle “tan š,” in the simplest terms, is the ratio of the viscous modulus to the elastic modulus.

Dynamic Properties for Various Sealing Elastomers

PROPERTY AEGIS Fluoroelastomer EPDM Nitrile   Silicone    Fluorosilicone
Abrasion Resistance Fair Good Good Good Poor Poor
Tear Resistance Fair Fair EXCELLENT EXCELLENT Poor Poor



  Rubber Engineering

Rubber Product Manufacturers

Get listed in IRD
Premium listing in IRD







New Page 1

    Rubber Articles
   Technical Papers
   Press Releases
   Rubber Articles
   Rubber Statistics

Contact Us : C/o Team Web Power, No.52, First Floor, Anna Nagar Plaza, C-47, IInd Avenue,
Anna Nagar, Chennai 600040. India. 
Phone:- +91-44-42170137 Mobile:- +91-9444001705

|    About Us    |    Vision    |    Disclaimer    |    Privacy Policy     | Sitemap     |    Feedback    |    Contact Us    |    Home    |

Contact Us : , No.52, First Floor, Anna Nagar Plaza, C-47, IInd Avenue, Anna Nagar, Chennai 600040.Tamilnadu, India.

Phone: +91-44-42170137  Mobile: +91-9444001705  Email: