Momentive BETA-11-D1 (1.73-kg-Ctnr)

RTV430 Silicone Mold Making Compound

Overview

RTV430 is a two-component, tin-cure (condensation cure) RTV silicone rubber developed by Momentive Performance Materials for high-strength mould making and precision casting applications. Used with Beta 5 or Beta 11 catalysts, the system offers flexible curing options while delivering excellent dimensional stability, high tear strength and outstanding detail reproduction. RTV430 is particularly suited for high-temperature resin casting, oven-cured processes and moulds requiring long service life and flexibility.

Key Technical Specs

• Product Type: Two-component condensation (tin) cure RTV silicone rubber
• Base Colour: White
• Catalyst Options: Beta 5 or Beta 11
• Mix Ratio: 10:1 by weight (Base : Catalyst)
• Mixed Viscosity: Approximately 47,000 cps
• Base Viscosity: 55,000 cps
• Shore A Hardness: 30
• Tensile Strength:
  • Beta 5 - 450 psi
  • Beta 11 - 600 psi
• Elongation at Break:
  • Beta 5 - 300%
  • Beta 11 - 360%
• Tear Strength:
  • Beta 5 - 130 ppi
  • Beta 11 - 120 ppi
• Service Temperature: -60°C to +200°C (-75°F to +392°F)
• Demould Time: Approximately 12 hours
• Linear Shrinkage: 0.5% after 24 hours, 1.0% after 7 days

Approvals & Specifications

• Manufactured by Momentive Performance Materials
• Suitable for industrial mould making and high-temperature casting applications
• No specific aerospace qualification stated within the technical data sheet

Typical Applications

• Precision mould making
• Art reproduction
• Casting high-temperature resins
• Oven-cured composite processing
• Flexible mould production
• Large linear moulds requiring dimensional stability

Compatibility & Safety Notes

• Mix thoroughly until a completely homogeneous blend is achieved
• Vacuum deaeration is recommended to eliminate entrapped air before casting
• Avoid excessive mixing speeds which may introduce air or generate excess heat
• Cures at room temperature (25°C) and approximately 50% relative humidity
• Cure speed may vary with changes in temperature and humidity
• Refer to the latest Safety Data Sheet (SDS) before handling and use appropriate personal protective equipment

Packaging & Procurement

• RTV430 Base Component
• Beta 5 Catalyst
• Beta 11 Catalyst
• Supplied as a two-component silicone mould making system

Why This Product is Chosen for AOG / MRO

• Excellent dimensional stability for producing accurate tooling and moulds
• High tear strength extends mould service life during repeated use
• Outstanding detail reproduction captures complex component geometry
• Multiple catalyst options allow curing characteristics to be tailored to production requirements
• Excellent thermal resistance supports high-temperature casting applications
• Low viscosity improves mould filling and reduces trapped air

Practical Suggestions for Your Team (AOG Mindset)

• Select Beta 5 where high-temperature casting or oven curing is required
• Choose Beta 11 for larger moulds requiring increased flexibility and tensile strength
• Use vacuum degassing after mixing to minimise air entrapment and improve mould quality
• Mix in a container at least four to five times larger than the material volume to accommodate expansion during deaeration
• Maintain the specified 10:1 mix ratio by weight to achieve consistent curing performance
• Allow approximately 24 hours at room temperature before placing moulds into service

Manufacturer / Aviation Spec Codes

• Manufacturer: Momentive Performance Materials
• Product Name: RTV430
• Product Type: Two-component condensation (tin) cure RTV silicone rubber
• Catalyst Options: Beta 5 and Beta 11
• Mix Ratio: 10:1 by weight
• Primary Application: Precision mould making and high-temperature casting