Rupal Metals stands out as a leading manufacturer and supplier of Stainless Steel 431 Hollow Bars in Delhi, India. They provide high-strength, corrosion-resistant hollow components that are perfect for demanding applications. Stainless Steel 431 is a martensitic stainless steel celebrated for its impressive mechanical properties, good toughness, and moderate resistance to corrosion. Rupal Metals offers SS 431 hollow bars in various custom dimensions and finishes, making them ideal for precision machining and high-load structural parts. These hollow bars find their place in marine, aerospace, defense, and engineering sectors, where high tensile strength, wear resistance, and lightweight hollow geometry are essential.
Stainless Steel 431 Hollow Bars are made up of Chromium (15–17%), Nickel (1.25–2.5%), Carbon (≤0.20%), along with small amounts of Manganese, Silicon, and Sulfur. They can be heat-treated to achieve impressive tensile strength (up to 1000 MPa), yield strength (up to 700 MPa), and hardness reaching up to 40 HRC. SS 431 is magnetic and provides good toughness and impact resistance. Its hollow design allows for less material usage while still delivering strong structural performance. With moderate corrosion resistance, particularly in marine and mildly acidic environments, this alloy is perfect for applications that demand strength and reduced weight.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Range : Range – 3.17mm to 350mm dia
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 431 | 0.20 | 17.00-15.00 | 1.00 | 2.50-1.25 | 0.040- | 0.030 | 1.00 |
| Element | Density | Electrical Resistivity | Modulus of Elasticity |
| SS 431 | 0.2800 lb/inch³ | 70° Ohms (circ mil./ft.) | 29.0 X 10^3 |
| Hollow Bar | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.49 | 1.60 |
| 18 | 0.62 | 2.02 |
| 20 | 0.76 | 2.49 |
| 22 | 0.92 | 3.02 |
| 25 | 1.19 | 3.90 |
| 28 | 1.49 | 4.89 |
| 28 | 1.49 | 4.89 |
| 30 | 1.71 | 5.61 |
| 32 | 1.95 | 6.38 |
| 36 | 2.46 | 8.08 |
| 38 | 2.74 | 9.00 |
| 40 | 3.04 | 9.97 |
| 45 | 3.85 | 12.62 |
| 50 | 4.75 | 12.62 |
| 56 | 8.96 | 19.55 |
| 60 | 6.84 | 22.44 |
| 65 | 8.03 | 26.34 |
| 70 | 9.31 | 30.54 |
| 75 | 10.69 | 35.06 |
| 80 | 12.16 | 39.89 |
| 90 | 15.39 | 50.49 |
| 100 | 19 | 62.34 |
SS 431 Hollow Bar is commonly used in industries such as aerospace, automotive, marine, and chemical processing. It is utilized for manufacturing components like shafts, valves, pumps, and fittings, where high strength, corrosion resistance, and durability are essential.
Common sizes for SS 431 Hollow Bar typically range from 25 mm to 500 mm in outer diameter, with wall thicknesses varying from 3 mm to 50 mm. Custom sizes may also be available depending on specific requirements or suppliers.
Stainless Steel 431 Hollow Bars are ideal for applications that need high mechanical strength, good machinability, and moderate corrosion resistance. Common uses include marine shafts, pump sleeves, valve bodies, aircraft fittings, drive components, and tools for the oil and gas industry. The hollow design helps reduce weight while preserving strength, making them efficient for rotating parts and load-bearing structures. In the defense and aerospace sectors, they are utilized in high-performance assemblies that face varying temperatures and stress. SS 431 hollow bars are also perfect for custom-machined components and engineering assemblies that require superior performance.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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