Phehlukwayo Metal is a reputable manufacturer and supplier of Stainless Steel 431 Rectangular Bars, proudly based in Cape Town, South Africa. The company focuses on crafting top-notch stainless steel products that blend impressive mechanical strength with excellent corrosion resistance. Using cutting-edge metallurgical methods and precision processing, these rectangular bars deliver outstanding dimensional accuracy, a smooth surface finish, and remarkable durability. Catering to sectors like aerospace, automotive, petrochemical, and engineering, Phehlukwayo Metal supplies dependable materials for tough applications that demand resilience, wear resistance, and long-lasting performance in both regular and moderately corrosive settings.
Stainless Steel 431 Rectangular Bars are martensitic stainless steels primarily made of iron, featuring around 16–18% chromium, 0.2–0.5% nickel, 0.2–0.5% molybdenum, and 0.12% carbon. This unique blend grants them high tensile strength, impressive hardness, and solid corrosion resistance, particularly in neutral or slightly corrosive environments. After heat treatment, 431 stainless steel retains good toughness and wear resistance, with typical hardness values ranging from 28 to 32 HRC in the annealed state and even higher when tempered. This material is perfect for applications that require a mix of strength, machinability, and moderate corrosion resistance.
Stainless Steel Rectangular 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 |
Yes, Stainless Steel 431 Rectangular Bars can be used at high temperatures due to their excellent oxidation and corrosion resistance, typically up to 800°C.
The pressure rating of Stainless Steel 431 Rectangular Bars depends on the specific application and design, but they generally perform well under moderate pressure conditions in structural and machinery applications.
Yes, Stainless Steel 431 Rectangular Bars are fully recyclable and can be reused without losing their properties.
Stainless Steel 431 Rectangular Bars find extensive use in industries that demand high strength, wear resistance, and moderate corrosion protection. They’re often used in the production of shafts, fasteners, valve components, gears, and pump parts. In the aerospace and automotive fields, they serve as structural components, engine parts, and high-strength fittings. The petrochemical and engineering industries rely on 431 stainless steel bars for machinery components, tools, and dies where durability and dimensional stability are essential. Their fantastic combination of strength, toughness, and corrosion resistance makes them a go-to choice for many demanding applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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