Products Description
his advanced material category encompasses oxidation-resistant graphite sheets, foils, tapes, and strips, engineered to withstand oxidative degradation while maintaining flexibility.
Manufacturing Innovation
Natural graphite undergoes acid intercalation followed by rapid thermal expansion (900-1200°C), creating vermiform expanded graphite with a porous density of 0.0032g/cm³. The oxidation-resistant variant incorporates proprietary antioxidant treatments during calendaring, eliminating binder dependency while enhancing air stability.
Performance Advantages
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Oxidative Stability: Withstands continuous operation at 450°C in oxygen-rich environments (vs. 300°C standard grades)
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Multi-Environmental Resistance:
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Chemical: Resists acidic/alkaline corrosion (pH 0-14)
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Thermal: Maintains integrity from -240°C to +2800°C (intermittent)
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Mechanical: 90% compression recovery after 10,000 cycles
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Hybrid Compatibility: Bonds with SUS304/Inconel sheets via diffusion welding for reinforced composites
Industrial Implementation
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High-Temperature Sealing: Oxidation-resistant packing rings for steelmaking furnace doors & gas turbine flanges
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Aerospace Thermal Management: Lightweight gaskets in rocket engine fuel lines and re-entry vehicle insulation
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Automotive Exhaust Systems: Custom-shaped composite gaskets for turbocharger housings and EGR valves
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Semiconductor Manufacturing: Ultra-clean seals in CVD chamber assemblies requiring oxidation control
Technical Specifications
Parameter | Coil | Plate |
Width Range | 1000/1500mm | 1000/1500mm |
Thickness | 0.15-1.0mm | 1.0-5.0mm |
Density | 0.8-1.3g/cm³ | 0.8-1.3g/cm³ |
Oxidation Limit | 450°C (continuous) | 500°C (intermittent) |
Customization Options
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Anti-oxidation coatings (SiC/Al₂O₃ nano-layer)
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Pre-cut gasket patterns with laser precision
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Multi-layer laminated structures with alloy meshes
Designed for extreme environments requiring simultaneous oxidation resistance and thermal management, this material series meets ASTM F104 Class 3 and DIN 28091-2 standards, offering 3X lifespan improvement over conventional graphite seals in oxidative conditions.
Item | Standard Value |
C concentration | 99% |
S concentration | <1000ppm |
chlorine concentration | <45ppm |
tensile strength | 4.5MPa |
compressibility | >40% |
recovery | >10% |
Temperature | -200ºC-600ºC |
Pressure | 20MPa |
Terence of Thickness | -0.04mm~+0.04mm |
Terence of Dimension | In accordance with your Gasket size |
Terence of Density | -0.06~g/cm3+0.06gcm3 |
Grades Separate :JB/T53392-1999 Mechanical Data | Qualified product | Top Grade | Superior Grade |
Density Tolerance g/cm3 | <0.4 | ±0.10 | ±0.05 |
≥0.4 | ±0.07 |
Tensile Strength MPa | ≥3.2 | ≥4.5 | ≥5.0 |
Compression Ratio % | 35~55 |
Rebound Rate % | ≥9 | ≥11 | ≥12 |
Stress relaxation rate % | ≤10 |
Ash % | ≤6.0 | ≤3.0 | ≤1.0 |
Heat loss on ignation % | 450ºC | ≤1.0 | ≤0.5 |
600ºC | ≤20 | ≤15 |
Sulphur content | ≤1500ppm | ≤1000ppm | ≤600ppm |
Chloride content | ≤100ppm | ≤50ppm | ≤20ppm |
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