1. 🧾 Durostone CAS761 Material Overview
Durostone CAS761 is a high-performance, glass-fiber-reinforced composite material, specifically engineered for extreme thermal and mechanical stress environments—most notably in PCB assembly and wave soldering applications.
Developed by Rochling, CAS761 belongs to the Durostone® product family and is known for its exceptional dimensional stability, low thermal conductivity, and high resistance to soldering fluxes and chemical attack.
This composite is the go-to material for PCB soldering carriers, pallets, and insulation tooling—areas where materials must maintain strength and shape at elevated temperatures while remaining electrically non-conductive. ⚙️
2. 🧪 Chemical Composition and Property Correlation
Durostone CAS761 is composed of:
- Glass fiber reinforcement (for strength and rigidity)
- Epoxy resin matrix (for thermal and chemical resistance)
- Fillers and additives (enhancing flame resistance, machinability, and dimensional stability)
Key property relationships:
- 🪨 Glass fibers → Excellent tensile and flexural strength
- 🔥 Epoxy matrix → Resistance to soldering heat (up to 280–300°C short-term)
- 🧪 Filler system → Low water absorption and excellent chemical resistance
Together, these elements provide a composite material that is thermally stable, chemically inert, and mechanically robust—even during repeated heating and cooling cycles in demanding environments like wave soldering machines.
3. 🛠️ Machining and Processing Adaptability
Durostone CAS761 is specifically formulated to be CNC machinable, enabling tight tolerances and repeatable quality in complex fixture design. 🧩
| Feature | Performance |
|---|---|
| Machinability | Excellent |
| Dimensional stability | Very high |
| Tool wear rate | Moderate |
| Surface finish quality | High |
Best practices for machining CAS761:
- Use PCD or solid carbide tools
- Implement dust extraction systems due to glass fiber content
- Apply low-to-moderate cutting speeds
- Avoid excessive heat buildup to preserve resin integrity
🛠️ It can be drilled, milled, and shaped into intricate fixture geometries, including pin locators, support structures, and vacuum grooves, without compromising mechanical performance.
4. 🌡️ Physical Properties & Environmental Performance
Durostone CAS761 is engineered to perform reliably under thermal, mechanical, and chemical stress.
| Property | Value / Performance |
|---|---|
| Maximum Operating Temperature | ~280°C (short-term) |
| Thermal Conductivity | Very low (excellent insulator) |
| Flexural Strength | ≥ 300 MPa |
| Density | ~1.85 g/cm³ |
| Electrical Insulation | Excellent |
| Water Absorption | ≤ 0.15% |
This unique combination ensures the material remains:
- 📐 Dimensional stable under heat
- 🔌 Non-conductive in high-voltage environments
- 🌡️ Thermally insulating to protect sensitive electronics
⚠️ Note: CAS761 is not suitable for cryogenic or ultra-high-frequency RF environments.
5. 🏭 Typical Application Fields
Durostone CAS761 is a staple in electronic manufacturing, particularly in processes involving intense heat exposure and mechanical handling. Common applications include:
- 🔧 PCB Soldering Fixtures
– Wave soldering pallets
– Reflow oven carriers
– SMT fixtures and supports - 📦 Thermal Protection Components
– Insulating plates in high-temp jigs
– Shields in automated assembly lines - ⚙️ Precision Tooling
– Fixtures for robotic PCB handling
– Vacuum pick-and-place plates
Its non-conductive and low-outgassing nature also makes it suitable for use in cleanroom environments.
6. 🧩 Integrated Performance Advantages
Let’s break down the 5 powerful advantages of Durostone CAS761 for engineers:
✅ 1. High Thermal Resistance
Withstands wave soldering temperatures up to 280°C without deformation or delamination.
✅ 2. Outstanding Dimensional Stability
Maintains shape and precision across thermal cycles—essential for fixture repeatability.
✅ 3. Electrical Insulation
Ensures no conductivity even in high-voltage or sensitive circuitry environments.
✅ 4. Chemical Resistance
Inert to solder fluxes, cleaning agents, and most industrial solvents.
✅ 5. Excellent Machinability
Adaptable to custom shapes and complex profiles, ensuring perfect fit in assembly lines.
🧠 Compared to other composites or basic phenolic boards, CAS761 offers significantly improved thermal and dimensional performance, giving engineers confidence in fixture integrity over time.
7. 📌 Conclusion
Durostone CAS761 stands out as a high-performance composite material purpose-built for thermal-resistant, precision-critical applications in the electronics industry. Its unique combination of heat tolerance, machinability, insulating properties, and mechanical stability makes it an engineering material of choice for designers and production specialists alike. 🔬
Whether you’re developing wave solder pallets, reflow carriers, or thermal protection jigs, CAS761 delivers long-term reliability and precision.
🎯 Looking for a trusted composite for your next thermal fixture design?
Durostone CAS761 might just be your ideal solution—strong, stable, and built for heat. ♨️
Established in 2018, Super-Ingenuity Ltd. is located at No. 1, Chuangye Road, Shangsha, Chang’an Town, Dongguan City, Guangdong Province — a hub of China’s manufacturing excellence.
With a registered capital of RMB 10 million and a factory area of over 10,000 m2, the company employs more than 100 staff, of which 40% are engineers and technical personnel.
Led by General Manager Ray Tao (陶磊 ), the company adheres to the core values of “Innovation-Driven, Quality First, Customer-Centric” to deliver end-to-end precision manufacturing services — from product design and process verification to mass production.
Advanced Digital & Smart Manufacturing Platform
Online Instant Quoting: In-house developed AI + rule engine generates DFM analysis, cost breakdown, and process suggestions within 3 minutes. Supports English / Chinese / Japanese.
MES Production Execution: Real-time monitoring of workshop capacity and quality. Automated SPC reporting with CPK ≥1.67.
IoT & Predictive Maintenance: Key machines connected to OPC UA platform for remote diagnostics, predictive upkeep, and intelligent scheduling.
Fast Turnaround & Global Shipping Support
| Production Cycle | Metal parts: 1–3 days; Plastic parts: 5–7 days; Small batch: 5–10 days; Urgent: 24 hours | | Logistics Partners | UPS, FedEx, DHL, SF Express — 2-day delivery to major Western markets |
Sustainability & Corporate Responsibility
Energy Optimization: Smart lighting and HVAC systems
Material Recycling: 100% of aluminum and plastic waste reused
Carbon Neutrality: Full emissions audit by 2025; carbon-neutral production by 2030
Community Engagement: Regular training and environmental initiatives
Official website address：https://super-ingenuity.cn/
