Louis Metals provides precision-engineered Stainless Steel 440C Square Bars and Rods from its Houston facility. These are tailored for applications that require high hardness and wear resistance. 440C (UNS S44004) is the hardest of the stainless steels, offering excellent edge retention and dimensional stability. Square bars provide structural rigidity and ease of machining for high-tolerance components like dies, punches, and fixtures. Manufactured to ASTM A276 specifications, our 440C square bars are available in annealed or hardened states, with fine finishes and tight dimensional control. Louis Metals supports aerospace, tooling, defense, and industrial clients with durable, wear-resistant stainless bar solutions.
440C stainless steel consists of 16–18% chromium and 0.95–1.20% carbon, along with trace amounts of molybdenum. It can achieve a hardness of about 60 HRC after heat treatment and has tensile strength above 2000 MPa. The square shape adds rigidity and stability for structural and machined parts. 440C is magnetic, heat-treatable, and moderately resistant to corrosion in mild environments. Louis Metals offers square bars with excellent surface quality, consistent grain structure, and machinability suitable for precision tooling, mechanical parts, and cutting-edge industrial applications.
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
Size : Tolerance: H8, H9, H10, H11, H12, H13K9, K10, K11, K12
| 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 | Tensile Strength | Yield Strength | Elongation | Hardness |
| SS 440C | 1965 | 1896 | 2 | 57 |
| STANDARD | WERKSTOFF NR. | UNS | JIS |
| SS 440C | 1.4125 | S44004 | SUS 440C |
| SQUARES | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.62 | 2.05 |
| 18 | 0.79 | 2.59 |
| 20 | 0.76 | 2.49 |
| 22 | 1.18 | 3.87 |
| 25 | 1.52 | 5.00 |
| 28 | 1.91 | 6.27 |
| 30 | 2.19 | 7.20 |
| 32 | 2.50 | 8.19 |
| 36 | 3.16 | 10.37 |
| 38 | 3.52 | 11.55 |
| 40 | 3.90 | 12.80 |
| 45 | 4.94 | 16.20 |
| 50 | 6.10 | 20.00 |
| 56 | 7.65 | 25.08 |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Yes, Stainless Steel 440C Square Bars are magnetic. This is because they are martensitic stainless steel, which contains a high amount of carbon, making them ferromagnetic.
Yes, Stainless Steel 440C square rods can be heat-treated to improve hardness and strength. The typical heat treatment process includes austenitizing, quenching, and tempering.
Stainless Steel 440C square bars offer excellent high-temperature strength and maintain their hardness and wear resistance in elevated temperatures. However, prolonged exposure may lead to some reduction in toughness and ductility.
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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