Home > Stud Bolts > Stainless Steel 409 Stud Bolts
Harsh Metalloys, a reputable manufacturer and supplier located in Mumbai, India, specializes in high-quality Stainless Steel 409 Stud Bolts. These bolts are crafted for applications that demand outstanding oxidation resistance and durability, especially at high temperatures. SS 409 is a ferritic stainless steel commonly found in automotive exhaust systems and industrial furnace components. Our stud bolts are produced in accordance with ASTM A193 and other international standards, ensuring they are precise, strong, and reliable. Offered in a variety of sizes and thread types, these bolts deliver secure fastening solutions in environments that experience thermal cycling, moderate corrosion, and mechanical stress.
Stainless Steel 409 Stud Bolts mainly consist of 10.5–11.75% Chromium and a low Carbon content (≤ 0.08%), with added Titanium for stabilization. This ferritic stainless steel provides moderate tensile strength, typically around 450 MPa, along with good ductility and impact resistance. The titanium stabilizer boosts corrosion resistance post-welding and helps prevent carbide precipitation. While SS 409 stud bolts aren’t hardenable through heat treatment, they excel in oxidation resistance up to 650°C. They also offer good weldability and dimensional stability, making them ideal for fastening in moderately corrosive and high-temperature settings.
Material | Specification | Standards | Size | Length |
Stainless Steel 409 Stud Bolt | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
1.00 max |
|
Phosphorus, max |
0.045 max |
|
Sulfur, max |
0.045 max |
|
Silicon |
1.00 max |
|
Nickel |
0.5 |
|
Chromium |
11.75 |
|
Molybdenum |
– |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 450 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 240 |
| Elongation in 4D (El) | 25% min |
| Reduction | – |
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When it comes to strength, corrosion resistance, and durability, 409 stud bolts are a top choice. They’re perfect for high-temperature applications, especially in automotive exhaust systems and structural assemblies.
For those heavy-duty jobs, 409 heavy stud bolts deliver the robust fastening needed for load-bearing structures. They’re ideal for industrial equipment, power plants, and any environment where strength is crucial under thermal stress.
Need versatility? 409 threaded stud bolts come with full or partial threads, making them great for various connections. They’re commonly used in machinery, exhaust assemblies, and medium-corrosion applications where reliable fastening is a must.
When it comes to securing flange connections under thermal and mechanical stress, 409 flange stud bolts are the way to go. You’ll often find them in automotive exhaust systems, process piping, and heat exchangers.
For precise threading in permanent fixtures, 409 tap end stud bolts are your best bet. They’re perfect for flanges or tapped holes, especially in automotive and industrial exhaust components.
With symmetrical threading for secure nut engagement at both ends, 409 double end stud bolts are ideal for exhaust manifolds, turbine casings, and piping systems
Stainless Steel 409 Stud Bolts are widely used in automotive exhaust systems, mufflers, catalytic converters, and industrial furnace assemblies where oxidation resistance and thermal stability are critical. These stud bolts are also employed in chemical processing, petrochemical plants, and HVAC systems requiring secure fastening under high temperature and mild corrosive conditions. Their good weldability and durability make them ideal for heat exchangers, flanges, and structural supports exposed to thermal cycling. SS 409 stud bolts offer a cost-effective solution for fastening components in applications demanding strength, resistance to scaling, and moderate corrosion protection.







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