Louis Metals, a reputable stainless steel manufacturer and supplier located in Houston, USA, proudly offers top-notch Stainless Steel 431 Hollow Bars. These bars are specifically crafted for applications that require exceptional strength, toughness, and moderate resistance to corrosion. Known for its impressive mechanical properties, 431 is a martensitic stainless steel that boasts high tensile and yield strength, along with solid corrosion resistance in both marine and industrial settings. Our precision-machined 431 hollow bars comply with ASTM standards, making them perfect for various components like shafts, fasteners, valves, and pump parts. We provide hollow bars in a range of sizes to meet the rigorous demands of engineering and machining projects.
Stainless Steel 431 Hollow Bars are composed of about 15–17% chromium, 1.25–2.5% nickel, and a carbon content of 0.12–0.20%. This alloy is heat-treatable, allowing it to achieve high hardness and strength after processes like quenching and tempering. The mechanical properties include a tensile strength between 850–1000 MPa, a yield strength of around 600 MPa, and a Brinell hardness of up to 285 HB when hardened. 431 provides good corrosion resistance in mildly corrosive environments, especially in water and marine conditions. Additionally, it offers excellent impact strength, machinability, and dimensional stability, making it an ideal choice for hollow bar applications where strength and performance are essential.
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 |
Stainless Steel 431 Hollow Bars find extensive use in mechanical and structural applications that require high strength, good toughness, and corrosion resistance. They are commonly utilized in marine shafts, aircraft components, pump rods, fasteners, and high-strength fittings. This material is particularly favored in the aerospace, defense, oil & gas, and marine industries due to its ability to maintain mechanical performance even under stress and exposure to moisture or chlorides. The heat-treatable nature of 431 allows for the customization of hardness and strength, making it a versatile choice for various applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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