Mourad Metals, located in Tunis, Tunisia, stands out as a top-notch manufacturer and supplier of high-quality Stainless Steel 431 Round Bars and Rods, catering to a variety of industrial sectors. Known for its precision engineering and unwavering commitment to excellence, the company provides products that not only meet international standards but also align with customer specifications. Stainless Steel 431, a martensitic alloy, is prized for its remarkable strength, hardness, and resistance to corrosion, making it perfect for demanding applications. Mourad Metals guarantees consistent quality through cutting-edge manufacturing processes, thorough testing, and prompt delivery, positioning itself as a reliable partner for businesses in need of durable and dependable stainless steel solutions.
Stainless Steel 431 is a martensitic stainless steel alloy that contains around 15–17% chromium, 0.2–0.5% nickel, and 0.15% carbon, along with trace amounts of manganese, silicon, and phosphorus. This unique blend results in high hardness, impressive tensile strength, and moderate corrosion resistance, especially in oxidizing environments. The alloy can be heat-treated to boost its mechanical properties, achieving tensile strengths between 850–950 MPa and hardness levels up to 50 HRC. Its mix of toughness, wear resistance, and dimensional stability makes it an excellent choice for precision-engineered components and applications that demand both strength and moderate corrosion resistance.
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.
Stainless Steel 431 Round Bars and Rods find extensive use in industries that require high strength and moderate corrosion resistance. Typical applications include automotive components, shafts, fasteners, valves, pump parts, and aerospace components, where durability under stress is essential. They are also utilized in chemical and petrochemical equipment, marine hardware, and industrial machinery that face moderately corrosive environments. The material’s outstanding hardenability and machinability make it perfect for crafting precision-engineered parts, while its wear resistance ensures a long service life.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Mourad Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Tunis, Tunisia
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