Rupal Metals stands out as a reliable manufacturer and supplier of Stainless Steel 431 Hex Bars right in the heart of Delhi, India. They specialize in precision-forged stainless steel products that are built to withstand high-strength and corrosion-resistant applications. Stainless Steel 431 is a martensitic grade celebrated for its impressive mechanical properties, torque strength, and decent corrosion resistance. Rupal Metals offers 431 hex bars in a variety of dimensions, making them perfect for critical components in aerospace, marine, and mechanical engineering. These hexagonal bars are tough, easy to machine, and can be polished, making them ideal for shafts, fasteners, and other parts that demand high tensile strength along with wear and corrosion resistance.
Stainless Steel 431 Hex Bars generally consist of Chromium (15–17%), Nickel (1.25–2.5%), and Carbon (≤0.20%), along with trace amounts of Manganese, Silicon, and Sulfur. This martensitic alloy can be heat-treated to achieve impressive strength and hardness, with tensile strength ranging from 700–1000 MPa and yield strength around 500–700 MPa. After heat treatment, hardness can reach up to 40 HRC. It also provides moderate corrosion resistance in marine and industrial settings. SS 431 is magnetic and showcases good toughness, making it a dependable choice for demanding mechanical and structural applications.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A276, A479, ASTM A493
Length : Random, Fix & Cut Length
Size : 20MM to 150MM
| ement | 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 |
| HEXAGONS | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.55 | 1.79 |
| 18 | 0.69 | 2.27 |
| 20 | 0.85 | 2.80 |
| 22 | 1.03 | 3.39 |
| 25 | 1.33 | 4.38 |
| 28 | 1.67 | 5.49 |
| 30 | 1.92 | 6.30 |
| 32 | 2.19 | 7.17 |
| 36 | 2.77 | 9.07 |
| 38 | 3.08 | 10.11 |
| 40 | 3.41 | 11.20 |
| 45 | 4.32 | 14.18 |
| 50 | 5.34 | 17.50 |
| 56 | – | – |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
SS 431 Hex Bar provides superior corrosion resistance and higher strength compared to lower-grade stainless steels like 304, making it more suitable for demanding applications in harsh environments like marine and aerospace.
SS 431 Hex Bar is commonly used to manufacture high-strength fasteners, bolts, shafts, and valve components, especially in industries like aerospace, marine, and chemical, where corrosion resistance and durability are critical.
Stainless Steel 431 Hex Bars find their place in various industries that prioritize high strength, toughness, and moderate corrosion resistance. You’ll commonly see them in pump and valve components, propeller shafts, marine hardware, aircraft fittings, and fasteners that face seawater and atmospheric corrosion. The hexagonal shape enhances grip and torque transfer in mechanical assemblies. SS 431 is also used in turbine blades, equipment for paper mills, and components in chemical processing where mechanical durability is essential. Its excellent polishability and precise dimensions make it a great fit for both functional and aesthetic applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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