Product Brief
High-Stress Crack Resistant FEP HD922: Ideal for Pipe & Valve Lining. Excellent Corrosion Resistance & Mechanical Strength for Harsh Industrial Use.
Product Overview
HD922 FEP Fluoropolymer, tailored for pipe/valve lining, is a premium tetrafluoroethylene-hexafluoropropylene copolymer. With melting index 0.8~2.0 g/10min, it inherits PTFE's chemical inertness, plus enhanced stress crack resistance and processability. It forms seamless, durable linings against corrosion/thermal stress, complying with global standards for chemical, petrochemical and water treatment industries.
Product Details
What is HD922 FEP Fluoropolymer for Pipe & Valve Lining?
FEP is a high-performance fluoropolymer with excellent chemical stability and thermoplastic processability. Unlike PTFE (requiring complex sintering), its branched-chain structure enables easy molding. HD922's low melting index (0.8~2.0 g/10min) ensures high melt viscosity for thick, uniform linings.
vs. PVDF/ETFE, HD922 outperforms: superior chemical resistance to strong acids/bases than PVDF; better stress crack resistance than ETFE for pressure/thermal cycles. Unlike rubber linings, it maintains long-term integrity, reducing maintenance costs.
Key Properties of HD922 FEP Fluoropolymer
HD922's key lining-optimized properties (backed by technical data):
● Exceptional Stress Crack Resistance: Tailored molecular structure resists cracking under 10 MPa pressure and -200℃~200℃ cycles. 1000-hour ASTM D1693 test: no cracking (40% better than standard FEP), critical for dynamic operations.
● Superior Chemical Inertness: Inert to 98% sulfuric acid, 50% sodium hydroxide, solvents. High C-F bond energy (485 kJ/mol) prevents reactions, avoiding swelling/degradation and media contamination.
● Optimized Processability: Low melting index enables 0.5~5mm thick linings via compression/rotational molding. Melts uniformly at 260±5℃, seamless linings with ≥2.8 MPa metal adhesion (ASTM D4541).
● High Mechanical Strength: Tensile strength ≥28 MPa, elongation ≥300%, withstanding installation impacts and thermal expansion/contraction.
● Low Volatility & High Purity: Volatile content ≤0.1%, meeting food/pharmaceutical requirements, no processing contamination.
● Excellent Thermal Stability: Stable at -200℃~200℃ (continuous), 240℃ (short-term), suitable for high-temperature fluid systems.
Technical Specification of FEP Resin HD922
|
Item |
Unit |
Specification (HD922) |
|
Appearance |
- |
Translucent particle |
|
Melting Index |
g/10min |
0.8~2.0 |
|
Tensile Strength (≥) |
MPa |
28 |
|
Elongation at Break (≥) |
% |
300 |
|
Relative Gravity |
- |
2.14~2.17 |
|
Melting Point |
℃ |
260±5 |
|
Dielectric Constant (10⁶HZ, ≤) |
- |
2.15 |
|
Dissipation Factor (10⁶HZ, ≤) |
- |
7.0×10⁻⁴ |
|
Volatile Content (≤) |
% |
0.1 |
|
Application |
- |
Molding Material with Excellent Stress Cracking Resistance, Mainly for Lining of Pipes and Valves |
Packaging & Storage
1. Packing: Sealed PE bag with outer drum, 25kg net weight per drum.
2. Storage: Keep in a dry, clean and well-ventilated warehouse; avoid mixed impurity, strenuous vibration, sunlight and rain.
3. Attention: Defend package damage to ensure aggregate cleanness and product quality; processing temperature should not exceed 420℃ to prevent toxic gas release.
Why Choose Us?
● Professional manufacturer with over 10 years of export experience, providing qualified products and professional advice on material selection and usage.
● Professional international business team, offering prompt replies in English, Spanish and other languages.
● Equipped with professional certificates (ISO 9001, REACH, RoHS, etc.) to guarantee product quality.
● Free samples available for quality inspection before formal order.
● Adequate stock and quick customization capability to meet urgent demands.
● Reliable delivery time commitment for on-time supply chain support.
FABE Analysis
Feature (F)
Translucent FEP HD922; melting index 0.8~2.0 g/10min; tensile strength ≥28 MPa; elongation ≥300%; melting point 260±5℃; volatile ≤0.1%; stress crack resistant.
Advantage (A)
Superior stress crack resistance vs standard FEP; better chemical resistance than PVDF; higher strength than ETFE; optimized for thick lining; strong metal adhesion; low volatility, high purity.
Benefit (B)
Reduces pipe/valve maintenance and replacement costs via long-term lining integrity; ensures safe fluid transport without media contamination (ideal for food/pharmaceutical use); simplifies fabrication with easy molding process; adapts to harsh industrial conditions, minimizing downtime; meets global standards for wide industry applicability.
Evidence (E)
Complies with ISO 9001, REACH and RoHS standards; 1000-hour ASTM D1693 stress crack test confirms no cracking (40% better than standard FEP); a petrochemical client using HD922 lining reduced valve replacement frequency by 60% vs rubber linings; Adhesion strength test (ASTM D4541) shows ≥2.8 MPa bonding to metal substrates.
CTA (Call to Action)
Looking for high-reliability FEP fluoropolymer for pipe and valve lining? Contact our professional team to get free HD922 samples and detailed technical datasheets. We offer tailored material solutions and process guidance. Flexible order quantities, competitive pricing and global delivery are available. Send your inquiry now or call our sales representative to discuss your specific needs!
Characteristics Platform
Quality Control
Packagings
25kg/woven bag, 800kg/pallet
Workshop Gallery
Customer Cases
FAQ
1. What is the recommended processing temperature for HD922?
The processing temperature should be controlled between 340℃~390℃, and must not exceed 420℃ to avoid toxic gas release. We provide detailed processing parameter guidelines for different molding methods.
2. Can HD922 be used for food or pharmaceutical industry pipe/valve lining?
Yes. HD922 has high purity with volatile content ≤0.1%, meeting food and pharmaceutical industry requirements. It does not leach harmful substances, ensuring safe fluid transport.
3. How does HD922 compare with PTFE for lining applications?
Both have excellent chemical inertness, but HD922 has better processability (can be molded via standard thermoplastic processes) without complex sintering like PTFE, reducing production costs. It also has superior stress crack resistance for dynamic working conditions.
4. What is the shelf life of HD922 FEP resin?
When stored in accordance with the recommended conditions (dry, cool, sealed), the shelf life is 2 years from the production date.
5. Do you provide customized services for HD922?
Yes. We can adjust properties such as melting index and particle size according to your specific processing and application needs. Contact our R&D team for customized solutions.
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