What is Boltaron® 4335?
Boltaron® 4335 is a rigid, high-impact thermoplastic sheet composed of a proprietary polyvinyl chloride (PVC) alloy. Developed by SIMONA Boltaron, it is engineered for demanding thermoformed applications that require high mechanical strength, consistent forming behavior, and flammability compliance. The material is widely used in aerospace interiors, kiosks, transportation displays, and medical equipment housings.
What mechanical properties define its performance?
Boltaron 4335 is characterized by:
- Tensile Strength: 6,000 psi (41 MPa)
- Flexural Strength: 9,200 psi (63 MPa)
- Flexural Modulus: 330,000 psi (2,275 MPa)
- Notched Izod Impact Resistance: 18 ft-lb/in (953 J/m)
- Rockwell Hardness: R110
These values support use in structural, load-bearing, and high-impact environments while maintaining the formability required for tight-tolerance components.
How does Boltaron® 4335 compare to KYDEX® T?
While both materials perform similarly in flame resistance and structural strength, Boltaron® 4335 offers key advantages:
- Lower MOQ: 500 lb vs. KYDEX T’s 600 lb
- Shorter Lead Times: Varies by supplier, but generally more available
- Higher Impact Resistance: 18 ft-lb/in vs. ~15 ft-lb/in
- Lower Forming Temperature Range: 335–370°F vs. 365–390°F
- No Pre-drying Required: Simplifies process and reduces energy use
Overall, Boltaron® 4335 matches or exceeds KYDEX® T in critical performance metrics, with improved production flexibility.
What are the forming and processing guidelines?
Boltaron® 4335 is engineered for consistent performance in vacuum and pressure thermoforming processes. Its thermal and dimensional properties include:
- Forming Temperature: 335–370°F (168–188°C)
- Mold Shrinkage: 0.5–0.7%
- Drying Requirement: None
It forms cleanly over complex geometries and maintains dimensional stability across high-volume runs. The absence of a drying step allows for faster cycle times and reduced material handling.
Is the material flame retardant and aviation compliant?
Yes. Boltaron® 4335 meets or exceeds the following standards:
- FAR 25.853(a)(i) and (ii) (vertical burn testing for aircraft interiors)
- UL 94 V-0, 5VA and 5VB (depending on gauge)
- ASTM E162 Radiant Panel Flame Spread Index: <10
This makes it suitable for interior aircraft parts, public installations, and other regulated environments requiring low flame spread and self-extinguishing properties.
What sizes, gauges, and finishes are available?
- Widths: up to 60 in (1524 mm)
- Lengths: up to 120 in (3048 mm)
- Gauge Range: 0.028″ to 0.250″ (0.71 mm to 6.35 mm)
- Colors and Textures: Customizable; broad portfolio available
Custom blank sizes and finishes can be manufactured on request, supporting design flexibility across industries.
Which industries and applications are ideal for Boltaron® 4335?
Boltaron® 4335 is optimized for use in:
- Aircraft interiors (e.g., panels, carriers, covers)
- Medical and diagnostic equipment housings
- Kiosk and ATM enclosures
- Public transportation and airport display systems
- Protective casings for sensitive electronics
Its combination of impact resistance, fire safety, and aesthetics makes it a strong candidate for both structural and visible applications.
Can Boltaron® 4335 be used with secondary operations?
Yes. Boltaron® 4335 supports standard thermoplastic finishing methods including:
- CNC trimming and routing
- Solvent and mechanical bonding
- Painting and screen printing
- Drilling and mechanical fastening
Its consistent surface and material integrity facilitate integration into multi-step assembly workflows without additional conditioning.
Where can I get fabrication support or material sourcing for Boltaron® 4335?
For material sourcing, prototyping, and custom thermoforming solutions using Boltaron® 4335’s, contact RapidMade. Our team provides end-to-end support from design through production, with fast turnaround and expert engineering insight.
