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Hastelloy fasteners: ### Type - **Bolts**: Hex bolts, U-bolts, J-bolts, and eye bolts. - **Nuts**: Hex nuts, lock nuts, wing nuts, and flange nuts. - **Screws**: Machine screws, cap screws, set screws, and wood screws. - **Washers**: Flat washers, lock washers, and spring washers. - **Anchors**: Wedge anchors, for securing into concrete and other substrates. - **Rivets**: Used for permanent fastening, particularly in sheet metal. ### Grade - **Hastelloy C-276**: Known for its versatility and resistance to severe corrosive environments. - **Hastelloy C-22**: Offers improved protection against crevice corrosion, pitting, and stress-corrosion cracking. - **Hastelloy B-2**: Excellent resistance to reducing environments like hydrogen chloride gas. - **Hastelloy X**: High strength and oxidation resistance at high temperatures. ### Application - **Chemical Processing**: For equipment in acid production, pickling systems, and scrubber systems. - **Aerospace**: In engines and airframes for high-temperature resistance. - **Pharmaceuticals**: Equipment and piping systems that require clean, corrosion-resistant surfaces. - **Power Generation**: In flue gas desulfurization systems and nuclear power systems. - **Oil and Gas**: For offshore drilling rigs, piping systems, and undersea equipment. - **Marine Engineering**: In shipbuilding and repair, especially for components exposed to seawater. ### Size and Length - **Diameter**: Ranges from very small screws (#0) up to larger bolts (over 2 inches in diameter). - **Length**: From a few millimeters for screws to several inches for bolts and studs. ### Features - **Corrosion Resistance**: Especially against chlorine, sulfuric acid, and oxidizing acids. - **High-Temperature Performance**: Maintains strength and toughness at elevated temperatures. - **Ductility**: Good formability and weldability for various applications. ### Brand - While specific brands might not be universally recognized for Hastelloy fasteners as they are for consumer products, it's crucial to source from reputable suppliers known for quality assurance and material authenticity. ### Considerations - **Cost**: Hastelloy fasteners are significantly more expensive than standard materials, reflecting their advanced properties. - **Application Specificity**: Due to their specialized nature, ensure the chosen grade matches the environmental and mechanical requirements of the application. Hastelloy, a high-performance alloy known for its outstanding corrosion resistance in a wide range of severe environments, is indeed an unusual but highly effective material for manufacturing wedge anchors, especially when used in environments where standard materials like carbon steel or even stainless steel would fail due to corrosion. ### Applications of Hastelloy Wedge Anchors: 1. **Chemical Processing Industries**: Hastelloy's resistance to both oxidizing and reducing chemicals makes it ideal for chemical plants where spills or vapors might corrode standard anchors. 2. **Marine Environments**: Its excellent resistance to seawater makes it suitable for docks, piers, and other marine applications where saltwater corrosion is a concern. 3. **High-Temperature Settings**: Hastelloy can withstand high temperatures, making it suitable for attaching fixtures in or near furnaces, reactors, or other high-temperature environments. 4. **Pollution Control Equipment**: Equipment used in pollution control often encounters a variety of corrosive gases and chemicals, making Hastelloy anchors a preferred choice. 5. **Pharmaceutical Facilities**: The cleanliness and non-reactivity required in pharmaceutical manufacturing can benefit from the corrosion resistance of Hastelloy anchors. ### Advantages of Hastelloy Wedge Anchors: - **Corrosion Resistance**: Superior resistance to pitting, crevice corrosion, and stress-corrosion cracking, allowing them to last longer in harsh environments. - **Durability**: The strength and toughness of Hastelloy ensure that anchors can handle heavy loads without compromising structural integrity. - **Versatility**: Can be used in a variety of environments that would typically degrade other materials, making them a versatile choice for industrial applications. - **Longevity**: Although the initial cost might be higher, the longevity and reliability of Hastelloy anchors can lead to lower overall maintenance and replacement costs. ### Considerations: - **Cost**: Hastelloy is more expensive than most traditional anchor materials, which can be a significant factor in budget-sensitive projects. - **Availability**: Given their specialized nature, Hastelloy wedge anchors might not be as readily available as those made from more common materials and may require custom ordering. Using Hastelloy for wedge anchors showcases a commitment to quality and durability, especially in applications where failure due to corrosion could lead to significant safety, environmental, or financial risks. It's a premium choice, reflecting an understanding of the specific challenges presented by the environment in which the anchors will be used. hastelloy anchor fasteners: ### Type - **Wedge Anchors**: For heavy loads in concrete. - **Sleeve Anchors**: Versatile use in masonry or concrete. - **Drop-In Anchors**: Ideal for overhead applications in solid surfaces. - **Undercut Anchors**: Provides high load capacity and mechanical interlock with concrete. ### Grade (Common Hastelloy Alloys) - **C-276**: Known for its exceptional corrosion resistance in a wide range of aggressive environments. - **C-22**: Offers improved resistance to pitting, crevice corrosion, and stress-corrosion cracking. - **B-3**: Excellent resistance to hydrochloric acid at all concentrations and temperatures. - **X**: High strength and oxidation resistance at elevated temperatures, suitable for furnace applications. ### Application - **Chemical Processing**: Where chemical resistance is critical to prevent corrosion. - **Marine**: For applications exposed to seawater and marine atmospheres. - **Pharmaceutical**: In environments requiring high levels of cleanliness and resistance to sanitization chemicals. - **Oil & Gas**: For corrosive environments like those found in offshore drilling and processing. - **Power Generation**: In areas with exposure to corrosive gases or high temperatures. ### Corrosion Resistance - **Acidic Environments**: High resistance to sulfuric, hydrochloric, and phosphoric acids. - **Alkaline Environments**: Capable of withstanding exposure to bases. - **Oxidizing Conditions**: Maintains integrity in environments with oxidizing agents. - **Reducing Conditions**: Effective in environments with reducing agents. ### Temperature Range - **High-Temperature Applications**: Suitable for use in high-temperature environments where lesser materials would fail. - **Cryogenic Applications**: Maintains toughness at very low temperatures. ### Size and Dimension - **Diameter**: Range indicating the thickness of the anchor, crucial for matching hole size. - **Length**: Important for ensuring adequate engagement in the base material. ### Features - **Threaded**: For applications requiring bolt removal or adjustment. - **Non-Threaded**: For permanent, high-strength anchoring. ### Installation Environment - **Indoor**: Environments with controlled conditions. - **Outdoor**: Exposed to weather and potentially corrosive elements. ### Customization - **Custom Lengths**: For specific project requirements. - **Special Coatings**: Additional coatings for enhanced corrosion resistance or to meet specific environmental challenges. wedge anchors: ### Material - **Carbon Steel**: Standard strength and suitable for indoor or dry environments. - **Stainless Steel**: Offers corrosion resistance for outdoor or moist environments. - **Galvanized Steel**: Provides protection against corrosion for outdoor applications. - **Hastelloy**: Exceptional corrosion resistance in highly aggressive environments. ### Diameter - Indicates the thickness of the anchor, which affects the load it can support. Common diameters include: - **1/4 inch** - **3/8 inch** - **1/2 inch** - **5/8 inch** - **3/4 inch** - **1 inch** ### Length - The length of the anchor determines how deeply it can be set into the concrete, affecting its holding power. Common lengths range from: - **2 inches** to **12 inches** or more, depending on the application requirements. ### Environment - **Indoor**: Less exposure to corrosive elements. - **Outdoor**: Requires corrosion resistance due to exposure to weather. - **Marine**: High corrosion resistance needed for saltwater exposure. - **Chemical**: Resistance to specific chemicals or corrosive environments. ### Load Type - **Static**: For loads that do not move or exert dynamic forces. - **Dynamic**: For loads with movement or vibration, requiring anchors with higher pull-out and shear resistance. ### Head Style - **Hex Head**: Common for applications where the fixture provides sufficient clearance. - **Flat Head**: Used where a flush surface is necessary. - **Round Head**: Less common, used in specialized applications. ### Thread Type - **Full Thread**: Provides flexibility in the depth of embedment. - **Partial Thread**: Specific embedment depth, with part of the anchor unthreaded for stronger engagement in the concrete. ### Installation - **Drill Diameter**: The size of the hole to be drilled for the anchor, which must match the anchor diameter. - **Embedment Depth**: Minimum depth the anchor must be inserted into the concrete to achieve its rated holding power. ### Certification and Standards - **ICC-ES Approved**: Indicates compliance with International Code Council standards for structural safety. - **ASTM**: Compliance with specific ASTM (American Society for Testing and Materials) standards related to materials and performance. ### Application - **Construction**: For securing structural and non-structural elements to concrete. - **Machinery Installation**: Anchoring heavy machinery that requires a stable base. - **Infrastructure**: Use in bridges, highways, and public works that demand high strength and durability. - **Commercial and Residential**: Applications ranging from fastening light fixtures to securing structural beams.