Chuck Metals is your go-to manufacturer and supplier of Stainless Steel 431 Hollow Bars right here in Singapore, serving a diverse array of industries across Pulau Ujong and Southeast Asia. This high-strength martensitic grade, Stainless Steel 431, is celebrated for its impressive toughness, resistance to corrosion, and excellent heat treatment capabilities. Our 431 hollow bars are crafted to meet rigorous standards like ASTM A276 and A479, ensuring they deliver outstanding mechanical properties, precise dimensions, and a smooth finish. Chuck Metals provides these hollow bars for critical applications in aerospace, marine, oil & gas, and mechanical engineering, where strength and corrosion resistance are non-negotiable.
These Stainless Steel 431 Hollow Bars consist of 15–17% chromium, 1.25–2.5% nickel, and low carbon content (around 0.2%), striking a perfect balance between strength and corrosion resistance. After undergoing heat treatment, this grade boasts high tensile strength (up to 850 MPa), yield strength (approximately 600 MPa), and moderate elongation (about 15–20%), along with excellent toughness and fatigue resistance. It stands up well against mild organic acids, freshwater corrosion, and oxidation, although it’s not the best choice for highly corrosive or chloride-rich environments. Its magnetic properties and hardenability make it a solid option for applications that demand top-notch mechanical performance.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Range : Range – 3.17mm to 350mm dia
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 431 | 0.20 | 17.00-15.00 | 1.00 | 2.50-1.25 | 0.040- | 0.030 | 1.00 |
| Element | Density | Electrical Resistivity | Modulus of Elasticity |
| SS 431 | 0.2800 lb/inch³ | 70° Ohms (circ mil./ft.) | 29.0 X 10^3 |
| Hollow Bar | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.49 | 1.60 |
| 18 | 0.62 | 2.02 |
| 20 | 0.76 | 2.49 |
| 22 | 0.92 | 3.02 |
| 25 | 1.19 | 3.90 |
| 28 | 1.49 | 4.89 |
| 28 | 1.49 | 4.89 |
| 30 | 1.71 | 5.61 |
| 32 | 1.95 | 6.38 |
| 36 | 2.46 | 8.08 |
| 38 | 2.74 | 9.00 |
| 40 | 3.04 | 9.97 |
| 45 | 3.85 | 12.62 |
| 50 | 4.75 | 12.62 |
| 56 | 8.96 | 19.55 |
| 60 | 6.84 | 22.44 |
| 65 | 8.03 | 26.34 |
| 70 | 9.31 | 30.54 |
| 75 | 10.69 | 35.06 |
| 80 | 12.16 | 39.89 |
| 90 | 15.39 | 50.49 |
| 100 | 19 | 62.34 |
SS 431 Hollow Bar is commonly used in industries such as aerospace, automotive, marine, and chemical processing. It is utilized for manufacturing components like shafts, valves, pumps, and fittings, where high strength, corrosion resistance, and durability are essential.
Common sizes for SS 431 Hollow Bar typically range from 25 mm to 500 mm in outer diameter, with wall thicknesses varying from 3 mm to 50 mm. Custom sizes may also be available depending on specific requirements or suppliers.
Stainless Steel 431 Hollow Bars find their place in applications where high strength, decent corrosion resistance, and machinability are key. In the aerospace and defense sectors, they’re utilized for components like shafts, fasteners, and structural parts. In the marine industry, 431 hollow bars are perfect for propeller shafts, pump components, and valve parts, thanks to their strength and ability to resist corrosion in freshwater. The oil & gas and automotive sectors rely on them for gear shafts, spindles, and other high-stress components. Plus, they’re well-suited for chemical processing, machinery manufacturing, and general engineering where strength and toughness are essential.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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