Located in Delhi, India, Rupal Metals is a reputable manufacturer and supplier of premium stainless steel 431 round bars and rods that are designed to satisfy the various needs of different industries. These bars and rods, which are made with premium-grade materials and cutting-edge techniques, are renowned for their exceptional performance and precision engineering. Stainless Steel 431 is a martensitic stainless steel that has a high tensile strength, resistance to corrosion, and exceptional toughness. These products are perfect for engineering, aerospace, marine, and automotive applications because Rupal Metals offers them in a variety of sizes and finishes and maintains stringent quality control.
The main constituents of stainless steel 431 round bars and rods are nickel (1.25–2.5%), chromium (15–17%), and a maximum of 0.20% carbon. This martensitic stainless steel has good hardness, moderate corrosion resistance, and high strength. Mechanical characteristics include hardness up to 250 HB, yield strength of about 620 MPa, and tensile strength of about 850 MPa. It is appropriate for high-load applications where strength and moderate corrosion resistance are crucial because it also exhibits good impact resistance and excellent polishability.
Stainless Steel Round Bar Specification : ASTM A276 / A479, ASME SA276 / A479
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 14mm-300mm
Thickness : 50 mm to 6000 mm Long
Length : 1 To 6 Meters, Custom Cut Length
Form : Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.
| 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 | – |
|
Typical Mechanical Properties at Elevated Temperatures, Hardened at 1010oC and Tempered at 30oC Above Working Temperature |
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|
Tempering Temperature oC |
510 |
570 |
620 |
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|
Working Temperature oC |
480 |
540 |
590 |
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|
Tensile Strengt Mpa |
1350 |
720 |
435 |
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|
Elongation in 50mm % |
15 |
20 |
26 |
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|
Room Temperature Hardness after Test |
HB |
440 |
330 |
280 |
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|
Rc |
47 |
37 |
30 |
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|
Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
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|
BS |
En |
No |
Name |
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|
431 |
S43100 |
431S29 |
57 |
1.4057 |
X17CrNi16-2 |
2321 |
SUS 431 |
|
Grade |
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Coefficient of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100°C (J/kg.K) |
Electrical Resistivity (nΩ.m) |
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|
0-100°C |
0-315°C |
0-538°C |
at 100°C |
at 500°C |
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|
431 |
7800 |
200 |
10.2 |
12.1 |
– |
20.2 |
– |
460 |
720 |
Yes, Stainless Steel 431 Round Bars/Rods can be used at high temperatures, offering good oxidation and scaling resistance up to 600°F (316°C), making them suitable for moderate temperature applications.
Yes, Stainless Steel 431 Round Bars/Rods are fully recyclable. Being a type of stainless steel, they can be melted down and repurposed without losing their inherent properties, contributing to sustainability.
Yes, Stainless Steel 431 Round Bars/Rods can be welded, although preheating and post-weld heat treatment are recommended to prevent cracking and maintain the material's mechanical properties.
Applications requiring high mechanical strength and moderate corrosion resistance frequently use stainless steel 431 round bars and rods. These bars are used for parts like shafts, bolts, pump rods, valve parts, and propeller shafts in common industries like aerospace, automotive, marine, and defence. They are also appropriate for structural and decorative applications due to their superior machinability and polishable surface. These rods are utilised in the chemical and food processing industries to make equipment that needs to be strong, hygienic, and long-lasting. They are perfect for high-performance and wear-resistant environments because of their resistance to oxidation and stress.
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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