Stainless Steel 431 Hollow Bar stands out for its remarkable strength, hardness, and resistance to corrosion, making it a top choice for tough industrial and engineering tasks. As a martensitic stainless steel, grade 431 boasts impressive mechanical properties, including high tensile strength and decent toughness, all while resisting oxidation and corrosion in moderately harsh environments. Its hollow structure not only cuts down on weight but also keeps the structural integrity intact, making it perfect for precision components, shafts, and mechanical assemblies. Thanks to its consistent quality, precise dimensions, and durability, Stainless Steel 431 Hollow Bar is a go-to material in the aerospace, automotive, chemical processing, and general engineering fields.
This hollow bar is primarily made of iron, featuring around 15–17% chromium, 2–3% nickel, along with trace amounts of carbon, manganese, and molybdenum. This unique blend gives it high hardness, excellent wear resistance, and solid corrosion resistance after heat treatment. The martensitic structure contributes to its high tensile strength and enhanced toughness, making it ideal for parts that face significant stress or mechanical wear. The hollow design ensures that material is used efficiently while still delivering top-notch performance, making Stainless Steel 431 Hollow Bar perfect for shafts, structural tubing, and high-precision industrial components that demand strength, reliability, and durability.
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.
Across various industries like aerospace, automotive, chemical processing, petrochemical, and heavy machinery, Stainless Steel 431 Hollow Bar is a popular choice. Its impressive strength and corrosion resistance make it suitable for shafts, mechanical assemblies, fasteners, valve components, and rotating equipment that encounter moderate corrosive conditions. The hollow design not only lightens the load but also maintains mechanical performance, boosting efficiency in both structural and dynamic applications. With its excellent machinability and responsiveness to heat treatment, this material is a reliable option for demanding projects.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Junaid Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manama, Bahrain
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