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Silver Tubes is one of the renowned trader and suppliers of SMO 254 / Alloy 254 / UNS S31254 / 6MO Rods, which displays very good resistance to SCC in environments where hydrogen sulphide is present together with chlorides. In normal welding operations, heat input to SMO 254 Rods takes place for a much shorter time. It means that the risk of intergranular attack after welding of Alloy 254 Rods is minimal, which is also verified by tests on welded specimens. This is true for both solutions annealed and cold worked material in UNS S31254 Rods, as well as for welded joints. 6MO Rods have good creep and oxidation resistance. 254 SMO Rods are also known as high performance alloys, and can be formed in different shapes. In addition to its corrosion resistance, SMO 254 Bars has high strength, good metallurgical stability and favourable fabrication characteristics.
The considerable content of chromium gives Alloy 254 Bars exceptional resistance to oxidizing chemicals and to soaring-temp oxidizing gases. UNS S31254 Bars is a basic nickel-chromium alloy for corrosive and / or high temperature applications. Meanwhile, the high chromium content makes 6MO Bars very resistant to attack from oxidizing chemicals or hot gases. Also, the high chromium content gives 254 SMO Bars excellent resistance to aqueous corrosion by oxidizing acids (especially nitric acid) and salts and to sulfidation at high-temperatures. We also offer bars and rods at reasonable price to our customers.
Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
Specifications | ASTM A276, A479 / ASME SA 276, SA 479 |
Size | 1/2" to 100" |
Length | 100 mm to 6000 mm |
Diameter | 5mm~ 500 mm |
Form | Round, Hex (A/F), Hollow, Precision Ground Br, Rectangle, Flat, T-Bar, Blocks, Threaded, Triangle, Square, Billet, Ingot, Rings, Channel Bar, Half Round Bar, Profiles, I/H Bar, Angle, Rod, Forging Etc. |
Finishing | Bright, Polish, Bright, Rough Turned, Grinding, Centreless Ground & Black |
Condition | Cold Drawnd Pulished Cold Drawn Centreless Ground & Polished, Annealed round bar |
STANDARD | UNS | WERKSTOFF NR. | EN |
254 SMO® | S31254 | 1.4547 | X1CrNiMoCuN20-18-7 |
Grade | C | Ni | Si | N | S | Mn | P | Cr | Ce | Fe | |
SS 254 SMO | min. | - | 17.5 | - | 0.18 | - | - | - | 19.5 | 0.03 | Balance |
max. | 0.02 | 18.5 | 0.08 | 0.22 | 0.01 | 1.00 | 0.03 | 20.5 | 0.08 |
Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
254 SMO | 650 | 35 | 300 | 50 | 270 |
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