Aohong XGS-5000 Series: Advanced Exhaust Engine Gasket Sheet for Extreme Conditions

Material Architecture

Core Matrix Composition

• Vermicular Graphite: 65% (99.2% purity, 50-70μm flakes)
• 316L Stainless Microfibers: 25% (12μm diameter)
• Ceramic Nanocoating: 10% (Al₂O₃-SiO₂ composite)

Structural Design

|| Layer Configuration || Thickness || |—————-|———————| | Primary Layer | 0.2mm reinforced | | Core Layer | 0.5mm composite | | Surface Layer | 0.2mm embossed |

Edge Treatment:

• Laser-perforated (0.3mm holes)
• Hexagonal surface pattern (0.05mm depth)

Performance Validation

Thermal Characteristics

• Operating Range: -40°C to 900°C (SAE J2975 certified)
• Conductivity: 18.3 W/m·K (in-plane)
• Cycle Endurance: 500+ thermal shocks (900°C↔RT)

Mechanical Properties

Test ParameterResultStandardCompression Recovery92% @ 20MPaASTM F36Creep Relaxation<3% after 1000h@700°CTensile Strength42MPa (MD)ISO 527

Quality Assurance Protocol

1. Micro-CT Scanning: Density uniformity check
2. XRF Analysis: Material composition verification
3. Helium Mass Spec: 100% leak testing

Field Performance Data

Heavy-Duty Applications:

• 150,000-mile service in Class 8 trucks
• 0.002% leak rate @ 50psi backpressure

Performance Automotive:

• 2.5Bar turbo pressure tolerance
• 40% heat soak reduction vs conventional