Sahil Metals stands out as a top manufacturer and supplier in Riyadh, Saudi Arabia, specializing in high-quality Stainless Steel 431 Rectangular Bars that are built to last. This martensitic stainless steel grade, known as SS 431, strikes a fantastic balance between corrosion resistance, toughness, and impressive tensile strength. At Sahil Metals, we ensure our 431 Rectangular Bars meet international standards, guaranteeing precise dimensions, a superior surface finish, and a long lifespan. These bars are in high demand across various industries, including aerospace, marine, chemical, oil & gas, and mechanical engineering, where dependable performance in both moderately corrosive and high-stress environments is crucial.
Stainless Steel 431 Rectangular Bars generally consist of 15–17% chromium, 1.25–2.5% nickel, and low carbon content, along with trace amounts of manganese and silicon. This unique blend gives them remarkable strength, decent corrosion resistance, and moderate toughness. SS 431 boasts a tensile strength ranging from 850 to 1000 MPa, a yield strength of about 600 MPa, and a hardness of up to 248 HB in the annealed state, which can improve even more after heat treatment. The alloy is also known for its good machinability, resistance to mild acids, and excellent fatigue strength, making it a great choice for both mechanical and structural applications under stress.
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) |
|||
|
0-100°C |
0-315°C |
0-538°C |
at 100°C |
at 500°C |
|||||
|
431 |
7800 |
200 |
10.2 |
12.1 |
– |
20.2 |
– |
460 |
720 |
Stainless Steel 431 Rectangular Bars find their place in various industries that demand a mix of high strength and corrosion resistance. In aerospace, they are used for aircraft components, shafts, and fasteners. The marine sector relies on them for propeller shafts, pump components, and fittings that come into contact with seawater. The oil & gas and chemical industries utilize these bars for valves, pumps, and processing equipment. Additionally, SS 431 Rectangular Bars are essential in automotive, defense, and mechanical engineering for crafting tools, machine parts, and high-stress components.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sahil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Riyadh, Saudi Arabia
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