Luois Metals is a trusted name in the manufacturing and supply of Stainless Steel 420 Square Bars and Rods, proudly based in Houston, USA. Grade 420 is a high-carbon martensitic stainless steel celebrated for its remarkable hardness, strength, and wear resistance once heat-treated. Our SS 420 square bars are crafted to meet the rigorous ASTM A276 and A479 standards, and we offer a diverse selection of sizes and lengths to cater to both standard and custom needs. Luois Metals provides robust, precision-machined square rods that are perfect for cutting tools, valve components, surgical instruments, dies, pump shafts, and various high-performance mechanical applications.
Stainless Steel 420 is made up of 12–14% chromium and 0.15–0.40% carbon, along with small amounts of manganese, silicon, and sulfur. With the right heat treatment, SS 420 can reach impressive hardness levels (up to 50 HRC or even higher), boasting a tensile strength of 700–1000 MPa and good fatigue resistance. This alloy is magnetic in all conditions and offers moderate corrosion resistance—better when hardened than in its annealed state. 420 is known for its excellent polishability, decent machinability, and high wear resistance, making it a great choice for applications that involve friction and mechanical loads.
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 420 | 0.15 | 14.0 | 1.00 | – | 0.04 | 0.03 | 1.00 |
| Element | Tensile Strength | Yield Strength | Elongation | Hardness |
| SS 420 | 95,000 | 50,000 | 25 | 175 |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 420 | 1.4021 | S42000 | SUS 420 J1 | 420S29 | – | – | FeMi35Cr20Cu4Mo2 |
| 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 | – | – |
Stainless Steel 420 Square Bars and Rods are frequently utilized in situations that require high hardness, edge retention, and resistance to wear and abrasion. Common applications include knife blades, surgical instruments, pump and valve components, dies, nozzles, shafts, gear parts, and molds. It’s widely used across the tooling, medical, mechanical, and automotive sectors, particularly where components face mechanical stress or cutting action. SS 420 square bars are also popular in cutlery, scissors, and industrial blades. Luois Metals delivers SS 420 bars with precise dimensional tolerances and custom finishes, ready for machining, polishing, or direct assembly.
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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