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Stainless Steel 330 stud bolts are made in Delhiand India for high-temperature, high-stress environments like furnaces, chemical processing, and power generation. They consist of an austenitic alloy with high nickel and chromium content, which gives them excellent resistance to oxidation and carburization. These bolts are perfect for fastening in settings where temperatures exceed 1000°C. Carefully manufactured with heat-treated threading and a finished surface, 330 stud bolts provide durability under both cyclic heating and corrosive conditions. Manufacturers supply them with test certifications, precise dimensions, and surface protection, ready for export to global infrastructure and industrial markets.
Stainless Steel 330 typically includes 35–37% nickel, 17–20% chromium, 1–1.5% silicon, and trace elements like manganese and iron. It offers a tensile strength of around 550–750 MPa, a yield strength of 280–350 MPa, and about 30% elongation. The high levels of nickel and chromium provide excellent heat resistance and structural stability at high temperatures. 330 retains its strength and resists scaling, thermal fatigue, and carburization during extreme heating. These mechanical qualities make it suitable for high-stress environments with continuous thermal cycles and corrosive exposure.
| Material | Specification | Standards | Length | Size |
| 330 Stainless Steel Fasteners | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | 3 mm to 200 mm | M 02 to M 160 |
| Component | Wt. % |
| C | Max 0.08 |
| Cr | 19 |
| Fe | 42 |
| Mn | Max 2 |
| Ni | 36 |
| P | Max 0.04 |
| S | Max 0.03 |
| Si | Max 1.13 |
| Hardness, Brinell | 139 | 139 | Converted from Rockwell B hardness. |
| Hardness, Knoop | 155 | 155 | Converted from Rockwell B hardness. |
| Hardness, Rockwell B | 80 | 80 | |
| Hardness, Vickers | 153 | 153 | Converted from Rockwell B hardness. |
| Tensile Strength, Ultimate | 585 MPa | 84800 psi | |
| Tensile Strength, Yield | 290 MPa | 42100 psi | at 0.2% offset |
| Elongation at Break | 45 % | 45 % | in 50 mm |
| Modulus of Elasticity | 197 GPa | 28600 ksi | at 21°C, 179 GPa at 315°C, 164 GPa at 540°C, 145 GPa at 760°C, 134 GPa at 870°C, 124 GPa at 980°C |
| Charpy Impact | 325 J | 240 ft-lb | Annealed |
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Stainless Steel 330 Stud Anchor Bolts offer superior high-temperature and corrosion resistance. Ideal for heavy-duty applications, they ensure secure anchoring in extreme environments like furnaces, petrochemical plants, and industrial machinery.
Stainless Steel 330 Stud Exhaust Bolts provide exceptional high-temperature and corrosion resistance, making them ideal for exhaust systems in industrial applications. They ensure durable, reliable fastening in extreme heat environments.
Stainless Steel 330 Hex Stud Bolts offer high-temperature and corrosion resistance, ideal for industrial applications. They ensure reliable, durable fastening in extreme environments such as furnaces and petrochemical facilities.
We have a high-quality assurance of the complete transparency of our Stainless Steel 330 Stud Bolts. The orders come along with some documents, like a commercial invoice, a packing list, a fumigation certificate, a heat treatment chart, and a NABL-approved lab test report. Material Test Certificates per EN 10204/3.1b, PMI Test Certificates, 100% radiography test reports, and Third-Party Inspection Certificates are provided by us. We arrange all of our documentation completely for maximum client satisfaction.
Stainless Steel 330 stud bolts are used in furnace hardware, heat-treating equipment, petrochemical reformers, and thermal oxidizers. They are favored for projects with repetitive thermal cycling, such as steel plants, kilns, incinerators, and exhaust systems. Their resistance to oxidation and scaling makes them ideal for combustion chambers and radiant tubes. In chemical processing plants, they fit well in reactors, heat exchangers, and valve assemblies that deal with hot gases. Manufacturers in Delhiand India offer these fasteners in standard and custom thread sizes to meet global demand in high-temperature engineering systems.
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