Ragnar Metals and Tubes is a leading manufacturer, stockist and exporter of premium quality Stainless Steel 431 Round Bars. With over 20 years of industry experience and an ISO Certified quality management system, we supply high-performance SS 431 Round Bars to customers across India, the Middle East and worldwide markets. Our commitment to quality, competitive pricing and timely delivery has made us a preferred supplier for engineering, marine, aerospace and industrial sectors.
Stainless Steel 431 Round Bars are high-strength martensitic stainless steel products containing chromium and nickel, providing an excellent combination of corrosion resistance, toughness and mechanical strength. These bars are widely used in marine equipment, pump shafts, aircraft fittings, propeller shafts, fasteners and precision engineering applications.
We maintain a large inventory of Stainless Steel 431 Round Bars in various diameters, lengths and finishes including bright, black, polished, forged and ground conditions. All products are manufactured according to international quality standards and undergo strict quality inspections before delivery.
At Ragnar Metals and Tubes, every SS 431 Round Bar undergoes stringent quality inspection procedures before dispatch. We focus on delivering products that comply with international standards and meet the exact requirements of our customers.
Stainless Steel 431 Round Bar is a high-strength martensitic stainless steel grade containing chromium and nickel. It offers superior corrosion resistance compared to conventional martensitic grades while maintaining excellent strength and toughness. The material can be heat treated to achieve enhanced mechanical properties.
SS 431 Round Bars are commonly used in marine environments, aerospace components, shafting applications, pump and valve parts, propeller shafts and engineering equipment where high strength and corrosion resistance are required.
SS 431A Round Bars contain lower carbon content and provide excellent corrosion resistance while maintaining good hardness. These bars are commonly used in industrial equipment, food processing machinery, and general engineering applications.
SS 431B Round Bars offer a balance between hardness and corrosion resistance. The material is suitable for manufacturing tools, industrial components, and precision parts requiring reliable mechanical performance.
SS 431C Round Bars are widely recognized for their superior hardness, exceptional wear resistance, and excellent strength. This grade is frequently used for bearings, cutting tools, surgical instruments, aerospace components, and high-performance engineering applications.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.20 Max |
| Chromium (Cr) | 15.00 - 17.00 |
| Nickel (Ni) | 1.25 - 2.50 |
| Manganese (Mn) | 1.00 Max |
| Silicon (Si) | 1.00 Max |
| Phosphorus (P) | 0.040 Max |
| Sulfur (S) | 0.030 Max |
| Property | Value |
|---|---|
| Tensile Strength | 850 MPa Min |
| Yield Strength | 540 MPa Min |
| Elongation | 12% Min |
| Hardness | 248 HB Max |
| Density | 7.70 g/cm³ |
| Modulus of Elasticity | 200 GPa |
| Property | SS 431 Round Bar | SS 410 Round Bar |
|---|---|---|
| Corrosion Resistance | Excellent | Good |
| Strength | Higher | Moderate |
| Nickel Content | Present | Minimal |
| Toughness | Excellent | Good |
| Marine Applications | Highly Suitable | Limited |
| Heat Treatable | Yes | Yes |
SS 431 Round Bars offer significantly better corrosion resistance and mechanical strength than SS 410 Round Bars. Due to the addition of nickel, Stainless Steel 431 is widely used in marine, aerospace and high-performance engineering applications where strength and corrosion resistance are equally important.
SS 431 Round Bars provide excellent tensile and yield strength for demanding industrial applications.
The nickel and chromium content improves corrosion resistance compared to other martensitic stainless steels.
The material maintains good toughness and impact resistance even under high stress conditions.
SS 431 can be heat treated to achieve higher hardness and improved mechanical performance.
The alloy offers reliable wear resistance for rotating and moving mechanical components.
SS 431 performs well in marine and offshore applications where corrosion resistance is critical.
SS 431 Round Bars are extensively used in automotive manufacturing for shafts, gears, bearings, and precision-machined components requiring high wear resistance and strength.
The aerospace sector utilizes SS 431 Round Bars for critical components that demand durability, dimensional stability, and resistance to wear under extreme operating conditions.
Oil and gas companies use SS 431 Round Bars in valves, pumps, drilling equipment, and offshore systems where corrosion resistance and mechanical reliability are essential.
Marine applications benefit from the corrosion-resistant properties of SS 431 Round Bars in shafts, fittings, fasteners, and specialized hardware.
Surgical instruments, medical devices, and precision equipment are commonly manufactured using SS 431 stainless steel because of its hardness and resistance to corrosion.
Defense manufacturers use SS 431 Round Bars in high-performance equipment, precision tools, and specialized engineering applications.
Ragnar Metals and Tubes supplies SS 431 Round Bars throughout Dubai, Abu Dhabi, Sharjah, Ajman, Fujairah, and Ras Al Khaimah. We serve EPC contractors, fabrication companies, engineering firms, and industrial manufacturers across the UAE.
We regularly export SS 431 Round Bars to Riyadh, Jeddah, Dammam, Jubail, and Yanbu for oil and gas, petrochemical, defense, and heavy engineering projects.
Our products are supplied to major industrial and infrastructure projects across Doha and other regions of Qatar.
We export premium quality SS 431 Round Bars to Muscat, Sohar, Salalah, and industrial zones throughout Oman.
Stainless Steel 431 Round Bar is a high-strength martensitic stainless steel with excellent corrosion resistance and toughness.
UNS S43100 is the Unified Numbering System designation for Stainless Steel 431.
Yes, SS 431 stainless steel is magnetic in both annealed and hardened conditions.
Yes, SS 431 can be heat treated to improve hardness, strength and wear resistance.
Marine, aerospace, oil and gas, defence, pump manufacturing and engineering industries use SS 431 Round Bars.
Yes, Ragnar Metals and Tubes supplies customized diameters, lengths and finishes according to customer specifications.
Yes, we export Stainless Steel 431 Round Bars to UAE, Saudi Arabia, Oman, Qatar, Kuwait, Bahrain, Africa, Europe and worldwide markets.
Ragnar Metals and Tubes is committed to delivering premium quality SS 431 Round Bars to customers across the globe. With 20+ years of experience, ISO-certified quality systems, advanced manufacturing capabilities, and a strong export network, we continue to serve industries requiring reliable stainless steel solutions. Whether you need standard stock materials or custom specifications, our team is ready to provide high-quality products, technical support, and timely delivery for projects of any size.
