Teflon Anti-corrosion Resistant Coatings Alloy Steel ASTM A193 Grade B7 B8 B16 Stud Bolts
Teflon Coated ASTM A193 Stud Bolts
Premium PTFE (Teflon) anti-corrosion resistant coatings on alloy steel ASTM A193 Grade B7, B8, B16 stud bolts for extreme chemical, petrochemical, marine and high-temperature industrial applications.
Superior Corrosion Resistance with Teflon Coating
Teflon (PTFE) coated ASTM A193 stud bolts combine the mechanical strength of alloy steel with the exceptional chemical resistance of Teflon coatings. These specialized fasteners are engineered for applications where standard fasteners fail due to corrosion, chemical attack, or extreme temperature conditions.
Our ASTM A193 Grade B7, B8, and B16 stud bolts with Teflon anti-corrosion resistant coatings provide unmatched protection against corrosive environments including chemical processing, petrochemical plants, marine applications, and high-temperature services.
Exceptional Chemical Resistance
Teflon (PTFE) coating provides superior resistance to acids, alkalis, solvents, and corrosive chemicals.
High Temperature Performance
Rated for continuous service from -200°C to +260°C (-328°F to +500°F) depending on grade.
Non-stick & Low Friction
PTFE coating prevents material buildup and provides easy disassembly even after prolonged service.
ASTM Standards Compliance
Manufactured to ASTM A193 specifications with full traceability and material certifications.
ASTM A193 Material Grades
Choose the right alloy steel grade for your specific temperature, strength, and corrosion resistance requirements.
ASTM A193 Grade B7 – Chromium-Molybdenum Alloy Steel
Grade B7 is a quenched and tempered chromium-molybdenum alloy steel widely used in high-temperature and high-pressure applications. When combined with Teflon coating, it provides excellent corrosion resistance along with high tensile strength.
| Property | Specification | Application Benefit |
|---|---|---|
| Material Composition | Chromium-Molybdenum Alloy Steel | High strength at elevated temperatures |
| Tensile Strength | 125 ksi (860 MPa) min | High load bearing capacity |
| Yield Strength | 105 ksi (725 MPa) min | Excellent resistance to deformation |
| Temperature Range | -29°C to 425°C (-20°F to 800°F) | Suitable for high-temperature service |
| Hardness | HB 235-302 / HRC 22-32 | Optimal balance of strength and toughness |
| Primary Applications | Pressure vessels, valves, flanges, heat exchangers, high-temperature piping | |
ASTM A193 Grade B8 – Stainless Steel (304/316)
Grade B8 includes both B8 (304 stainless) and B8M (316 stainless) classes. These austenitic stainless steels offer good corrosion resistance, enhanced by Teflon coating for extreme chemical environments.
| Property | Specification | Application Benefit |
|---|---|---|
| Material Composition | 304/316 Austenitic Stainless Steel | Good base corrosion resistance |
| Tensile Strength | 75 ksi (515 MPa) min | Adequate strength for most applications |
| Yield Strength | 30 ksi (205 MPa) min | Good ductility and toughness |
| Temperature Range | -254°C to 540°C (-425°F to 1000°F) | Wide temperature service range |
| Corrosion Resistance | Excellent (enhanced by Teflon coating) | Ideal for chemical and marine environments |
| Primary Applications | Chemical processing, pharmaceuticals, food processing, marine, pulp & paper | |
ASTM A193 Grade B16 – Chromium-Molybdenum-Vanadium Alloy Steel
Grade B16 is a quenched and tempered chromium-molybdenum-vanadium alloy steel with higher strength at elevated temperatures compared to B7. Combined with Teflon coating, it’s ideal for ultra-high temperature corrosive applications.
| Property | Specification | Application Benefit |
|---|---|---|
| Material Composition | Cr-Mo-V Alloy Steel | Superior high-temperature strength |
| Tensile Strength | 115 ksi (795 MPa) min | High strength retention at temperature |
| Yield Strength | 100 ksi (690 MPa) min | Excellent creep resistance |
| Temperature Range | -29°C to 540°C (-20°F to 1000°F) | Extended high-temperature capability |
| Hardness | HB 235-302 / HRC 22-32 | Optimized for high-temperature service |
| Primary Applications | Power generation, boilers, superheaters, high-temperature pressure vessels | |
Superior Protection with PTFE Coating
Teflon (Polytetrafluoroethylene – PTFE) coatings provide exceptional chemical resistance and non-stick properties that protect alloy steel stud bolts in the most aggressive environments.
Our proprietary coating process ensures uniform, pinhole-free PTFE application with excellent adhesion to the base metal. The coating thickness is carefully controlled to provide optimal protection without compromising dimensional tolerances.
Key Coating Properties:
- Chemical Inertness: Resistant to virtually all chemicals except molten alkali metals and certain fluorine compounds
- Temperature Resistance: Serviceable from -200°C to +260°C (-328°F to +500°F)
- Non-stick Surface: Prevents buildup of process materials, allowing easy disassembly
- Low Friction Coefficient: Approximately 0.04-0.10, reducing galling and seizing
- Dielectric Properties: Excellent electrical insulation characteristics
Industrial Applications
Teflon coated ASTM A193 stud bolts are essential in industries where corrosion resistance and reliability are critical.
Chemical & Petrochemical Plants
Essential for reactors, columns, heat exchangers, and piping systems handling corrosive chemicals, acids, and solvents.
Oil & Gas Industry
Used in offshore platforms, refineries, and processing facilities where saltwater and H2S corrosion are concerns.
Power Generation
Critical for boilers, turbines, heat recovery systems, and flue gas desulfurization units in power plants.
Marine & Offshore Applications
Ideal for shipbuilding, desalination plants, and offshore structures exposed to saltwater corrosion.
Advantages of Teflon Coated Stud Bolts
Extended Service Life
Teflon coating protects against corrosion, significantly extending fastener life in aggressive environments by 3-5 times compared to uncoated fasteners.
Easy Maintenance & Disassembly
Non-stick PTFE surface prevents material buildup and galling, allowing for easier disassembly during maintenance, reducing downtime and labor costs.
Broad Temperature Compatibility
Suitable for extreme temperature applications from cryogenic to high-temperature services, maintaining performance across the range.
Superior Chemical Resistance
PTFE coating provides protection against a wide range of chemicals, acids, alkalis, and solvents that would attack unprotected metal surfaces.
Technical Specifications
Complete technical data for Teflon coated ASTM A193 stud bolts including dimensions, coatings, and performance characteristics.
Coating Specifications
- Coating Type: PTFE (Teflon)
- Coating Thickness: 0.5 – 2.0 mils (12-50 μm)
- Adhesion: ASTM D3359 Class 5A
- Porosity: Pinhole-free per ASTM D5162
- Color: Standard black, other colors available
Dimensions & Sizes
- Diameter Range: 1/4″ to 4″ (M6 to M100)
- Length Range: Up to 60″ (1500mm)
- Thread Types: UNC, UNF, Metric Coarse/Fine
- Thread Standards: ASME B1.1, ISO 898, DIN 13
- Nut Compatibility: ASTM A194 Grade 2H, 7, 8
Performance Characteristics
- Temperature Range: -200°C to +260°C
- Chemical Resistance: Excellent to most chemicals
- UV Resistance: Excellent (does not degrade)
- Abrasion Resistance: Moderate (not for sliding wear)
- Dielectric Strength: 500 V/mil (20 kV/mm)
Teflon Coated ASTM A193 Stud Bolts
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