Hemi Metals, located in Hamilton, New Zealand, is a reliable manufacturer and supplier of top-notch Stainless Steel 431 Rectangular Bars, perfect for high-strength and corrosion-resistant engineering needs. SS 431 is a high-performance martensitic stainless steel that stands out for its impressive tensile strength, decent corrosion resistance, and exceptional toughness compared to regular martensitic grades. Crafted with precision in dimensions, a smooth surface finish, and carefully controlled heat treatment, these rectangular bars guarantee consistent mechanical performance. Hemi Metals provides SS 431 rectangular bars to industries like aerospace, marine, power generation, oil & gas, and heavy engineering, where strength, durability, and reliability are essential.
Stainless Steel 431 is made up of about 15–17% chromium and 1.25–2.5% nickel, with a controlled carbon content. This specific chemical makeup gives it better corrosion resistance than SS 410 while allowing for excellent hardenability through heat treatment. Typically, SS 431 rectangular bars deliver tensile strength ranging from 850–1000 MPa after hardening and tempering, boasting high yield strength and good impact toughness. The material is magnetic, offers great fatigue resistance, and maintains reliable mechanical stability even under high loads, torsion, and cyclic stress.
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 their way into various applications that demand high strength, wear resistance, and moderate-to-good corrosion protection. You’ll often see them in aerospace components, marine shafts, pump and valve bodies, hydraulic systems, spindles, couplings, and heavy-duty fasteners. In the realms of power generation and industrial machinery, SS 431 rectangular bars are utilized for turbine components, rotors, and structural supports. They also play a role in mining equipment, defense components, and precision engineering parts. With their excellent strength-to-weight ratio and fatigue resistance, they are 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.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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