Rupal Metals stands out as a top manufacturer and supplier of Stainless Steel 431 Bars and Rods in Delhi, India. They specialize in high-performance stainless steel products designed for applications that demand strength, hardness, and resistance to corrosion. Stainless Steel 431 is a robust martensitic stainless steel known for its impressive mechanical properties and decent corrosion resistance, particularly in marine and industrial settings. Rupal Metals offers SS 431 bars and rods in a range of sizes, all heat-treated and machined to exact specifications. These bars are perfect for aerospace, marine, automotive, and mechanical components where toughness, durability, and wear resistance are crucial.
Stainless Steel 431 Bars and Rods generally contain Chromium (15–17%), Nickel (1.25–2.5%), and Carbon (≤0.20%), along with trace amounts of Manganese, Silicon, and Sulfur. This martensitic alloy is celebrated for its excellent hardenability and can be heat-treated to achieve tensile strengths between 700–1000 MPa and yield strengths around 500–700 MPa. When fully hardened, hardness can reach up to 40 HRC. SS 431 also boasts good toughness and impact resistance, is magnetic, and provides moderate corrosion resistance in mildly acidic or marine environments, making it ideal for high-load and rotating applications that require strong, resilient materials.
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Standard : ASTM A276, ASTM A479
Material Grade : Stainless Steel 431 (UNS S43100)
Stainless Steel 431 Round Bars : Outside Diameter in the range of 4mm to 500mm
Stainless Steel 431 Bright Bars : Outside Diameter in the range of 4mm to 100mm
Stainless Steel 431 Hex Bars : 18mm – 57mm (11/16″ to 2-3/4″)
Stainless Steel 431 Square Bars : 18mm – 47mm (11/16″ to 1-3/4″)
Stainless Steel 431 Flats : 1/2” to 10” in thickness range of 2mm to 150mm, Custom Size Stainless Steel Flats available
Length : 1 to 6 Meters, Custom Cut Lengths
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
| 431 | Max | Min |
| C | 0.20 | – |
| Cr | 17.00 | 15.00 |
| Fe | Balance | – |
| Mn | 1.00 | – |
| Ni | 2.50 | 1.25 |
| P | 0.040 | – |
| S | 0.030 | – |
| Si | 1.00 | – |
| Element | SS 431 |
| Density | 0.2800 lb/inch³ |
| Electrical Resistivity | 70° Ohms (circ mil./ft.) |
| Modulus of Elasticity | 29.0 X 10^3 |
|
Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
||
|
BS |
En |
No |
Name |
||||
|
431 |
S43100 |
431S29 |
57 |
1.4057 |
X17CrNi16-2 |
2321 |
SUS 431 |
Stainless Steel 431 Bars and Rods are ideal for applications requiring high strength and corrosion resistance. They are commonly used in marine, aerospace, automotive, and engineering industries for manufacturing shafts, fasteners, valve components, and other high-strength parts exposed to harsh environments.
Stainless Steel 431 offers a combination of high strength, excellent corrosion resistance, and good wear resistance, making it suitable for demanding applications. Unlike other grades, it has a higher hardness and is often used where mechanical performance and toughness are critical.
Stainless Steel 431 Bars and Rods find their place in various high-stress, corrosion-sensitive environments. They’re frequently used in marine shafts, aircraft components, fasteners, pump shafts, and valve parts. Thanks to their high tensile strength and wear resistance, they’re perfect for crafting drive shafts, spindles, bolts, gears, and other rotating machinery. In the chemical and petrochemical industries, they serve as parts for process equipment that come into contact with mildly corrosive substances. Their machinability and polishability also make SS 431 bars valuable in sectors that require both structural integrity and a polished finish.
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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