Louis Metals stands out as a top-notch stainless steel manufacturer and supplier based in Houston, USA. We take pride in our precision-engineered Stainless Steel 440C Flat Bars, celebrated for their impressive hardness, wear resistance, and strength. This high-carbon martensitic stainless steel is designed to excel in tough applications that demand superior mechanical properties along with moderate corrosion resistance. Our 440C flat bars can be heat-treated to maximize hardness, making them perfect for tooling, bearing components, and valve parts. With rigorous quality controls and custom sizing options, Louis Metals ensures that our 440C flat bars meet the highest industry standards for strength, precision, and durability.
When it comes to composition and mechanical properties, Stainless Steel 440C Flat Bar typically features 16–18% chromium, 0.95–1.20% carbon, along with trace amounts of manganese, molybdenum, and silicon. It boasts a high tensile strength ranging from 760–1970 MPa and a yield strength of about 450–1900 MPa, depending on the heat treatment process. The Brinell hardness can soar up to 285–600 HB when fully hardened. 440C is known for its excellent wear and abrasion resistance, maintaining edge retention, which makes it ideal for cutting tools and mechanical parts. While its corrosion resistance is moderate, it performs admirably in dry or mildly corrosive environments when properly hardened and passivated.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A276, A479, ASTM A493
Length : Random, Fix & Cut Length
Size : 20MM to 150MM
| 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 |
| Flat 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 440C Flat Bars find their way into a variety of applications that demand high hardness, strength, and wear resistance. You’ll commonly see them in knife blades, surgical instruments, ball bearings, valve seats, dies, molds, and precision mechanical parts. They’re also utilized in aerospace, automotive, and industrial manufacturing where dimensional stability and edge retention are essential. Thanks to 440C’s heat treatability, it’s a go-to choice for components that face high stress and friction. At Louis Metals, we offer 440C flat bars in a range of sizes, ensuring consistent quality and performance.
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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