Chung Metal at Đà Nẵng, Vietnam, is a reliable producer and exporter of Stainless Steel 431 Bars/Rods, which is a high-strength, martensitic stainless steel alloy of high corrosion resistance and toughness. These rods are aimed at the use in parts that are under high loads, shock, and corrosive conditions. Chung Metal produces 431 rods with strict dimensional tolerances and superior surface finishes to meet precision applications. Being balanced in strength, hardness, and corrosion resistance, Stainless Steel 431 finds extensive use in marine, aerospace, and engineering sectors where durability and performance are both needed.
Stainless Steel 431 is generally composed of 15–17% chromium, 1.25–2.5% nickel, and 0.20% maximum carbon. It possesses high tensile strength in the range of 850–1100 MPa and yield strength of about 600–800 MPa when heat-treated. Its elongation is typically 12–20%. The alloy is ferromagnetic and can be hardened by heat treatment with high resistance to corrosion in mildly aggressive and marine environments. Its nickel and chromium combination provides enhanced toughness and fatigue strength with adequate ductility for machining and forming operations.
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
Standard : ASTM A276, ASTM A479
Material Grade : Stainless Steel 431 (UNS S43100)
Stainless Steel 431 Round Bars : Outside Diameter in the range of 4mm to 500mm
Stainless Steel 431 Bright Bars : Outside Diameter in the range of 4mm to 100mm
Stainless Steel 431 Hex Bars : 18mm – 57mm (11/16″ to 2-3/4″)
Stainless Steel 431 Square Bars : 18mm – 47mm (11/16″ to 1-3/4″)
Stainless Steel 431 Flats : 1/2” to 10” in thickness range of 2mm to 150mm, Custom Size Stainless Steel Flats available
Length : 1 to 6 Meters, Custom Cut Lengths
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
| 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 | – |
| Element | SS 431 |
| Density | 0.2800 lb/inch³ |
| Electrical Resistivity | 70° Ohms (circ mil./ft.) |
| Modulus of Elasticity | 29.0 X 10^3 |
|
Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
||
|
BS |
En |
No |
Name |
||||
|
431 |
S43100 |
431S29 |
57 |
1.4057 |
X17CrNi16-2 |
2321 |
SUS 431 |
Stainless Steel 431 Bars and Rods are ideal for applications requiring high strength and corrosion resistance. They are commonly used in marine, aerospace, automotive, and engineering industries for manufacturing shafts, fasteners, valve components, and other high-strength parts exposed to harsh environments.
Stainless Steel 431 offers a combination of high strength, excellent corrosion resistance, and good wear resistance, making it suitable for demanding applications. Unlike other grades, it has a higher hardness and is often used where mechanical performance and toughness are critical.
Stainless Steel 431 rods/bars find applications in marine hardware, aircraft parts, pump shafts, valve components, fasteners, and mechanically high-strength systems. Their high tensile strength and mid-range corrosion resistance qualify them for saltwater environments, aerospace equipment, automotive components, and defense sectors. They are commonly used in hydraulic devices, engine components, and turbine equipment, where stress corrosion and wear resistance are the most important factors. Chung Metal offers 431 bars of different lengths, finishes, and temper conditions, Machinable, weldable, and ready for direct use in structural and carrying applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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