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Puri Fasteners, based in Chennai, has built a solid reputation as a manufacturer and supplier of top-notch Stainless Steel 446 Bolts, specifically crafted for the toughest industrial settings. Renowned for their precision and durability, these bolts meet global standards and are designed to withstand extreme heat, oxidation, and corrosion. Thanks to cutting-edge manufacturing techniques and strict quality control, Puri Fasteners guarantees that every product delivers consistent performance and reliability. Their Stainless Steel 446 Bolts are the go-to choice for applications that face high temperatures and challenging conditions. With a commitment to timely delivery, technical know-how, and a customer-first approach, Puri Fasteners has earned its place as a trusted name in the fastener industry.
These Stainless Steel 446 Bolts are made from a high-chromium ferritic stainless steel that contains around 23–27% chromium and very little carbon, which gives them outstanding resistance to oxidation and scaling. This alloy ensures strong mechanical stability even at elevated temperatures and offers good corrosion resistance in harsh environments. On a mechanical level, SS 446 Bolts boast high tensile strength, impressive creep resistance, and excellent dimensional stability when exposed to thermal stress. Their ability to maintain strength at temperatures over 1000°C makes them perfect for applications that demand exceptional heat resistance and a long service life.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 446 | min. | – | – | – | – | – | 23.0 | – | – | 0.10 |
| max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | – | 0.50 | 0.25 | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 446 | 485 | 275 | 20 | 92 | 201 |
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts. |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
You’ll find Stainless Steel 446 Bolts in various industries that operate under extreme temperatures and corrosive conditions. They’re commonly used in furnace components, heat exchangers, thermal processing equipment, kiln systems, and high-temperature industrial machinery. Additionally, they play a crucial role in petrochemical plants, power generation units, refineries, and exhaust systems, where resistance to oxidation and scaling is vital. These bolts excel in environments with sulfur, nitrogen compounds, and other aggressive substances. Thanks to their impressive thermal stability and corrosion resistance, Stainless Steel 446 Bolts are built to last.
We ensure the quality of our materials and strive for absolute customer satisfaction by rigorously checking the quality of all our products. Our advanced testing methods include hardness testing, chemical analysis using spectroanalysis, positive material identification (PMI), levelling testing, micro-macro testing, pitting resistance testing, flare testing, and intergranular corrosion testing. Through this analysis following on this whole, we guarantee that our products meet the highest standards of quality and performance.
Puri Fasteners is a leading manufacturer and supplier of high-quality fasteners in Chennai, India, with over 8 years of experience serving global industries.
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