Stainless Steel 304 Header Plug Manufacturer, Supplier & Exporter
Jade Alloys is a trusted Manufacturer and Supplier of Stainless Steel 304 Header Plugs based in India, serving industries that demand reliable, long-lasting sealing solutions. Our plugs are made from premium-grade SS 304 and are built to handle tough environments delivering solid corrosion resistance, good mechanical strength and dependable performance at elevated temperatures.
As part of our broader range of Header Plugs, these UNS S30400 plugs are precision-threaded to create a tight, leak-free seal in header and manifold systems, helping maintain critical pressure levels across the piping network. The robust construction and fine threading ensure a snug fit, improving the overall reliability of systems used in the automotive, aerospace and general industrial sectors.
Within our Stainless Steel Header Plugs range, the SS 304 variant stands out for its strong resistance to oxidation and scaling even under high heat making the SS 304 Header Plug a practical choice for components like turbochargers and exhaust systems. Its smooth surface also makes cleaning and maintenance easier, which is a real advantage in applications where hygiene and chemical resistance matter.
We maintain a large, ready stock of Stainless Steel 304 Header Plugs. Get in touch with us immediately with your specific requirement for a prompt, quick quote.
Stainless Steel 304 Header Plug Specifications
Stainless Steel 304 header plugs are essential components in piping systems, commonly used to seal the ends of manifolds or headers. The table below details the key physical and dimensional characteristics of these forged, threaded components, highlighting their standards and temperature resistance.
| Category | Detail |
|---|---|
| Material Grade | ASTM A182 / ASME SA182 Grade F304 |
| Header Plug Type | Forged / Threaded / Screwed / Hex Plug |
| Dimensions Standard | ASME B16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Pressure Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| Thread Types | NPT, BSP, BSPT, UNF (Unified National Fine) |
| Max Service Temperature | ∼870°C (∼1600°F) for intermittent use; ∼925°C (∼1700°F) for continuous use (with scaling resistance). |
| Common Variants | 304L (Low Carbon for welding); 304H (High Carbon for high-temperature strength). |
SS 304 Header Plug Chemical Composition
The corrosion resistance and strength of Stainless Steel 304 are primarily determined by its chemical composition, especially the Chromium and Nickel content. This table shows the maximum allowable percentages for various elements in the standard 304 grade and its low-carbon (304L) and high-carbon (304H) variants.
| Element | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni |
|---|---|---|---|---|---|---|---|
| 304 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00−20.00 | 8.00−10.50 |
| 304L | 0.035 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00−20.00 | 8.00−12.00 |
| 304H | 0.04−0.10 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00−20.00 | 8.00−10.50 |
Mechanical Properties of UNS S30400 Header Plug
Mechanical properties are crucial for ensuring the structural integrity of header plugs under pressure. The values below represent the minimum acceptable tensile strength, yield strength, and elongation for the UNS S30400 family of stainless steel, defining their strength and ductility.
| Property | SS 304 Minimum Value | SS 304L Minimum Value | SS 304H Minimum Value |
| Tensile Strength (TS) | 515 MPa (75 ksi) | 485 MPa (70 ksi) | 515 MPa (75 ksi) |
| Yield Strength (YS) | 205 MPa (30 ksi) | 170 MPa (25 ksi) | 205 MPa (30 ksi) |
| Elongation (EL) in 2 in. | 30% min | 30% min | 30% min |
| Hardness (Max HBW) | 187 | 187 | 187 |
Equivalent Grades of Stainless Steel 304 Header Plug
Stainless Steel 304 is a globally recognized material, and various international standards bodies have designated equivalent grades. This table lists some of the common equivalent materials for SS 304 plugs across different specifications, including their equivalents for casting and piping components.
| Material Group | Standard/Grade | Common Name |
| UNS | S30400 / S30403 / S30409 | SS304/304L/304H |
| European (EN) | X5CrNi18-10 / X2CrNi18-9 | EN 1.4301/1.4307 |
| JIS (Japan) | SUS304 | |
| Casting Equivalent | ASTM A351 Grade CF8 | |
| Pipe/Tube Equivalent | ASTM A312 Grade TP304 |
Stainless Steel 304 Header Plugs Inventory
SS 304 Threaded Header Plugs
SS 304 Blind Header Plugs
SS 304 Socket Weld Header Plugs
SS 304L Header Plugs
SS 304H Header Plugs
Applications of Stainless Steel 304 Header Plug
- Pipeline Engineering
- Marine Industry
- Chemical Industry
- Oil & Gas Industry
- Mechanical Engineering
- Plant Engineering
- Petrochemical Industry
- Power Industry
- Aerospace
- Food Processing Industry
