Chuck Metals is a reputable manufacturer and supplier based in Singapore, specifically on Pulau Ujong, known for its top-notch SMO 254 Hex Bars/Rods. These bars are celebrated for their remarkable corrosion resistance and impressive strength. SMO 254 is a super austenitic stainless steel crafted to thrive in harsh environments filled with chlorides, providing exceptional protection against pitting and crevice corrosion. With outstanding weldability and formability, Chuck Metals guarantees precision in manufacturing while adhering to global quality standards. This makes their hex bars/rods perfect for offshore, chemical processing, desalination, and marine industries, where performance and reliability are absolutely vital.
The composition of SMO 254 Hex Bars/Rods includes about 20% chromium, 18% nickel, 6% molybdenum, along with some nitrogen and copper, which boost both strength and corrosion resistance. This alloy boasts a high tensile strength of around 650 MPa, good elongation, and excellent impact toughness, even in freezing temperatures. The blend of these high alloying elements ensures exceptional resistance to stress corrosion cracking and oxidation in tough conditions.
Standards : ASTM A276, A279, A479
Grade : SMO 254, UNS No. S31254
Diameter : 5mm~ 500 mm
Size : 1/2″ to 100″
Length : 100 mm to 6000 mm
Form : Hex, Square, Hex (A/F) Bush, Rectangle, Flat
Finish : Bright, Black, Polish
| Standard | SMO 254 |
| UNS | S31254 |
| WERKSTOFF NR. | 1.4547 |
| AFNOR | Z1 CNDU 20.18.06Az |
| SIS | 2378 |
| GOST | – |
| BS | – 254 |
| OR | – |
| EN | X1CrNiMoCuN20-18-7 |
| Diameter, mm | Tolerances, mm |
| 20-35 | -0/+0.15 |
| 40-45 | -0/+0.16 |
| 50-70 | -0/+0.19 |
| 75-95 | -0/+1.00 |
| 100-250 | -0/+1.50 |
Yes, SMO 254 Hex Bar and Rod can be welded. It requires careful welding techniques, using appropriate filler materials and maintaining proper heat control to preserve its corrosion resistance and strength.
SMO 254 Hex Bar and Rod should be stored in a dry, clean environment, protected from moisture, chemicals, and extreme temperatures. Use proper supports to prevent deformation and corrosion.
Yes, SMO 254 Hex Bar and Rod can be recycled. As a high-grade stainless steel, it retains its properties after recycling, making it an environmentally friendly option for reuse in manufacturing.
These hex bars/rods find extensive use in seawater cooling systems, heat exchangers, desalination plants, chemical processing equipment, pulp and paper machinery, and various marine applications. Their ability to endure highly corrosive environments, paired with outstanding mechanical properties, makes them the go-to choice for critical applications where long-lasting durability, reliability, and low maintenance are key.






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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