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Navgraha Steel & Engg Company is a prominent manufacturer of high quality Alloy 28 Fasteners. We provide a wide range of products to customers all over the world. We are supplier of these fasteners as per national and international standards. Our company use raw material for production, which is the highest quality and procure from well-known vendors. These fasteners are designed to the specification and size, lengths, and other dimensions. There are different types of fasteners such as nuts, bolts, screws, clamps, nails, tapping screws, and so on. These different types of fastener products can be used in several industrial and domestic applications due to their durability and strength. These fasteners are specially suitable for heat exchangers in the concentration unit, where corrosive conditions are at their worst.
Alloy 28 is an alloy of multipurpose stainless-steel alloy which contains nickel and chromium. These Alloy 28 Fasteners have resistance to oxidation. Our company produces fasteners using Alloy 28 alloy, which is used for their pitting and crack corrosion resistance properties. These fasteners have the capability to withstand sulfuric and chloric acid. These Alloy 28 Fasteners have some physical properties. We offer these fasteners with half threaded or full threaded. Alloy 28 Fastener is an alloy stainless steel, also contains molybdenum and copper.
Alloy 28 is versatile stainless steel which is works in highly corrosive conditions. This alloy shows corrosion resistance to strong acids and other chemical components. These Alloy 28 fasteners show resistance to stress corrosion cracking and oxidizing acids. This alloy 28 shows mechanical properties like tensile and yield strength. Our company offers these fasteners that are used in chemical processing, pollution control equipment, oil, and gas well pipelines, nuclear fuel processing, acid making, pickling equipment. Both this alloy has good weldability. Alloy 28 has good impact strength at low and high temperatures.
| 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 |
| Studs, Bolts, Threads | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Test Certificate of Bolting | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| STANDARD | WERKSTOFF NR. | UNS | EN |
| Alloy 28 | 1.4563 | N08028 | X1NiCrMoCuN31-27-4 |
| Grade | C | Si | Mn | P | Cr | Mo | Ni | N |
| Alloy 28 | 0.02 max | 0.70 max | 2.00 max | 0.03 max | 26.00 – 28.00 | 30.00 – 32.00 | 19.00 – 21.00 | 0.11 max |
| Element | Hardness | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| Alloy 28 | 230 | 220 | 500 – 750 | 30 % |
Navgraha Steel & Engg Company
Krishvi Escape, No. A208, 2ND Floor,
A Wing, Sitaram Poddar Marg,
Near Vinay Health Home, Fanaswadi, Bhuleshwar, Mumbai- 400002