company tower banner
Wacker Chemie AG Company Logo

ELASTOSIL® M 4630 A/B

1 of 23 products in this brand
ELASTOSIL® M 4630 A/B is a pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature. It offers a fast and non-shrink cure at room temperature, which can be significantly accelerated with the application of heat. The main application of ELASTOSIL® M 4630 A/B is in making molds for concrete casting. Additionally, this grade is compliant with FDA regulations for food contact applications.

Polymer Name: Silicone Elastomer

End Uses: Bathroom Accessories, Mold Making

Features: Excellent Flowability, Excellent Mechanical Strength, Fast Curing, Food Contact Acceptable, Good Flow, Good Mechanical Properties, Good Shrinkage Resistance, Good Tear Strength, Long Potlife, Low Hardness, Low Shrinkage, Low Viscosity, Pourable, Room Temperature Vulcanizing

Tear Strength: 30.0 - 30.0 kN/m

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Special Features
  • Addition Curing
  • BfR compliant
  • Excellent mechanical properties
  • FDA compliant
  • Flowable
  • Food-contact
  • Low viscosity
  • No chemical shrinkage
  • Resistance against casting resins
  • Resistance against concrete
  • Two-component

Applications & Uses

Plastics & Elastomers End Uses
Application Details
  • Due to its outstanding resistance to concrete and superior mechanical properties, ELASTOSIL® M 4630 A/B is ideal for use in molds for making concrete reproductions of models with deep undercuts.
  • As a low-shore, addition-curing RTV-2 silicone rubber, which cures without dimensional shrinkage, ELASTOSIL® M 4630 A/B is also extremely suitable for casting all other common reproduction materials, especially casting resins where absolutely accurate copies of models with pronounced undercuts are required.

Processing

Important note:

  • The platinum catalyst is contained in component B.
  • Only components A and B with the same lot number may be processed together.
Applications

Construction Molding

Properties

Color
Catalyst Properties
ValueUnitsTest Method / Conditions
Curing Time (tack-free)12hours
Dynamic Viscosity (at 23°C)10000mPa·sISO 3219
Mix Ratio (A:B)10:1parts by weight
Pot Life (at 23°C, 60000 mPa·s)90minutes
Cured Properties
ValueUnitsTest Method / Conditions
Density (in water, at 23°C)1.13g/cm³ISO 2781
Elongation (at break)700%ISO 37
Linear Shrinkagemax. 0.1 %
Shore Hardness A28ISO 868
Tear Strengthmin. 30 N/mmASTM D 624 B
Tensile Strength6.5N/mm²ISO 37
Uncured Properties
ValueUnitsTest Method / Conditions
Density (at 23°C, Componenet A)1.14g/cm³
Density (at 23°C, Componenet B)1.01g/cm³
Dynamic Viscosity (Component A, at 23°C, after stirring)15000mPa·sISO 3219
Dynamic Viscosity (Component B, at 23°C, after stirring)800mPa·sISO 3219
Properties
  • Very good flow
  • ;Fast and non-shrink cure at room temperature which can be accelerated considerably by the application of heat.
  • Low shore a hardness (approx. 28)
  • High tear strength
  • Excellent long-term stability of the mechanical properties of the vulcanizate.
  • Outstanding resistance to concrete

Regulatory & Compliance

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania