Hemi Metals stands as a trusted manufacturer and supplier right here in Hamilton, New Zealand, specializing in high-performance metals for demanding industries. We are particularly proud to offer the SMO 254 Hex Bar and Rod, a superior-grade stainless alloy engineered for extreme environments. This material provides exceptional resistance where others fall short, making it a cornerstone for projects that require unwavering reliability and longevity, backed by our local expertise and commitment to quality.
The strength of SMO 254 lies in its advanced composition, which includes a high level of chromium, nickel, and molybdenum, plus a strategic addition of nitrogen. This unique blend gives the alloy remarkable mechanical properties, including very high tensile strength and outstanding resistance to pitting and crevice corrosion. It performs exceptionally well under stress, holding its integrity in challenging conditions that would severely damage standard stainless steels.
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.
Because of its robust nature, SMO 254 Hex Bar and Rod are indispensable in some of the toughest industrial settings. You’ll find it in critical components for chemical processing plants, offshore oil and gas platforms, and marine environments, especially where harsh chemicals like chlorides are present. It’s also the material of choice for pollution control scrubbers, piping systems, and fasteners, ensuring safety and durability where failure is simply not an option.






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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