Louis Metals supplies Stainless Steel 440C Hollow Bars from Houston, USA, designed for precision components that need extreme wear resistance and high hardness. 440C is a high-carbon martensitic stainless steel commonly used in applications where strength, hardness, and dimensional stability are crucial. Our hollow bars are perfect for making bushings, sleeves, valve bodies, and bearing housings. Produced to ASTM A511 standards, Louis Metals offers seamless and welded hollow bars with tight tolerances, smooth internal surfaces, and ready-to-machine formats. These 440C hollow bars support toolmakers, bearing manufacturers, and precision engineering industries with reliable, durable material solutions.
440C stainless steel contains 16–18% chromium and 0.95–1.20% carbon, achieving hardness levels of up to 60 HRC after heat treatment. Tensile strength exceeds 1900 MPa when fully hardened. It’s magnetic, heat-treatable, and offers moderate corrosion resistance in oil, air, and mild environments. Ideal for high-stress or frictional uses, 440C is known for its dimensional stability and ability to maintain tight tolerances. Louis Metals ensures each hollow bar has precise internal bore diameters and consistent wall thickness to support high-precision machining and structural performance.
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 440C | 1.20-0.95 | 18.00-16.00 | 1.00 | 1.00 | 0.04 | 0.03-0.15 | 1.00 |
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 440C | 1.20-0.95 | 18.00-16.00 | 1.00 | 1.00 | 0.04 | 0.03-0.15 | 1.00 |
| 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 440C hollow bar performs exceptionally well in harsh environmental conditions due to its high corrosion resistance, hardness, and wear resistance. It withstands exposure to moisture, chemicals, and high temperatures, making it suitable for demanding applications in extreme environments.
SS 440C hollow bar is known for its high hardness, excellent wear resistance, and good corrosion resistance. It offers strong mechanical properties, including high tensile strength and durability, making it ideal for applications requiring toughness and reliability in challenging environments.
Stainless Steel 440C Hollow Bars are used in bushings, bearing sleeves, precision valves, high-performance pump components, and pressure-retaining housings. Their great wear resistance makes them suitable for rotating parts, gear sleeves, and shafts in aerospace and automation systems. In healthcare, they are used for surgical tools and orthodontic instruments that require high edge retention and compatibility with sterilization. They are also common in hydraulic and pneumatic cylinders. Louis Metals provides custom-machined 440C hollow bars that ensure long service life and excellent performance in frictional, impact-prone, and high-stress settings.
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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