Hastelloy S Fasteners from Dalloyed Bolts deliver uncompromising performance in the harshest environments. Designed for strength, longevity, and corrosion resistance, these fasteners meet the highest demands in both industrial and commercial sectors. As one of the leading Hastelloy S Fasteners Manufacturers in India, Dalloyed Bolts offers global-quality fastening solutions trusted by engineers and procurement heads across continents—from Germany and Japan to the UAE and Brazil. Each fastener is engineered with precision to serve industries where failure is not an option.
What makes Hastelloy S Fasteners so distinctive? Hastelloy S is a nickel-based superalloy known for its excellent high-temperature strength and exceptional resistance to oxidizing environments. At Dalloyed Bolts, we use this premium-grade alloy to manufacture bolts, nuts, washers, and studs that stand up to aggressive chemicals, intense heat, and fluctuating pressures. As one of the top Hastelloy S Fasteners Suppliers, our commitment to metallurgical excellence ensures every product meets or exceeds global expectations.
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The advantages of Hastelloy S Fasteners are significant. These fasteners offer resistance to pitting, stress-corrosion cracking, and crevice corrosion even in oxidizing atmospheres. Their high tensile strength and thermal stability make them ideal for long-term operations in high-stress environments. In addition, the low carbon content of Hastelloy S reduces carbide precipitation during welding, preventing material failure in joint areas. As trusted Hastelloy S Fasteners Stockists, Dalloyed Bolts guarantees a robust inventory that supports rapid dispatch worldwide—be it for urgent offshore applications in Norway or chemical refineries in South Korea.
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The applications of Hastelloy S Fasteners are vast, with each industry leveraging their superior characteristics:
Dalloyed Bolts, as premier Hastelloy S Fasteners Exporters, delivers solutions adhering to top international standards such as ASTM B574, ASME SB574, DIN 2.4856, and ISO 9001. The fasteners are available in various grades, with UNS N06635 being the primary material specification. All products are thoroughly tested for dimensional accuracy, mechanical strength, and corrosion resistance, ensuring end-to-end quality from forge to field.
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Different countries refer to Hastelloy S Fasteners by varying trade names and specifications. In the United States, they are known under the UNS N06635 code. In Europe, they are commonly referred to as Alloy S or W.Nr. 2.4856 fasteners. Japan uses JIS NCF 625 equivalents in select aerospace-grade standards, while industries in the Middle East often specify Hastelloy S under ISO certified norms. No matter the nomenclature, Dalloyed Bolts ensures consistent quality and traceability across all global variants.
Specifications | ASTM B574, F1554 / ASME SB574, SF1554 |
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Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
Size | Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Machine Screws Size : M1.6 – M12 Self Tapping Screw Size : No.2 – No. 14 |
Length | 3 mm to 200 mm |
Threads | UNF, BSW, BSF, METRIC, UNC, or as required |
Surface Coating | Ptfe Coating Phosphate Coating Teflon Coating Zinc Coating Hot Dipped Galvanizing Coating Cadmium Coating Xylon Coating |
STANDARD | WERKSTOFF NR. | UNS |
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Hastelloy S | 2.4856 | N06635 |
Grade | Ni | Mo | Cr | Fe | W | Co | Mn | C | V | P | Si |
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Hastelloy S | Remainder | 15.0-17.0 | 14.5-16.5 | 4.0-7.0 | 3.0-4.5 | 2.5 max | 1.0 max | .01 max | .35 max | .04 max | .08 max |
Element | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
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Hastelloy S | 690 MPa | 310 MPa | 45% |