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[China]
Address: Room 1703, 17th Floor, Building 5, Jinyin Modern City, Guangdian South Road, Jinshui District, Zhengzhou City, Henan Province, China.
Contact name:Vicky
Zhengzhou Huitong Pipeline Equipment Co.,Ltd. |
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ASME B18.2.4.6 UNS S31254 254SMO Heavy Hex Nuts with metric sizes M12-M100
1. 254SMO bolt nut washer stud screw dimension
| Material: | 254 SMO |
| Standard : | ASTM / ASME SB 479 |
| Grade: | UNS S31254 |
| Type of Fasteners: | Bolts : Bolts stud bolts, hex head bolts, socket hexagon head screw anchor bolts, u-bolts, J bolts, mushroom head square neck bolts, t- head bolts, wing screw, eye bolt, eye bolt, foundation bolts and structural bolts Washer : Plain washer , plain big & small OD washer , spring lock washer , spring washer heavy duty , tooth washer , star washer , tab washer with one & two tab Nuts : Hexagon nuts, hexagon coupling nuts, hexagon thin nut, square nut, hexagon castle nuts, self locking nut, hexagon domed cap nuts Screw : Pan head slotted screws, cheese head slotted screws, countersunk head slotted screws, countersunk raised head slotted screws, pan phillipse head screw, countersunk Phillipse raised head screws, slotted cheese trim head machine screws, socket head allen cap screws, allen countersunk socket head cap screws, socket head shoulder screws, socket head cap screw low head, hexagon socket set screw with flat point, hexagon socket set screws with cone point, hexagon socket set screw with dog point, hexagon socket set screws with dog point, hexagon socket set screws with cup point, imprial socket cap screws. Other : Threaded rod, as per drawing and customers spec. coating, hot dipped galvanizing, phosphate, Teflon, xylon, zinc, cadmium.
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| In Form of: | Hex, Square, Round , Threading as per Gauge Etc. |
254 SMO is an austenitic stainless steel designed for superior pitting and crevice corrosion. 254 SMO is ideal for high-chloride environments because of its high levels of chromium, molybdenum, and nitrogen. 254 SMO is often used where 316L or 317L has failed. 254 SMO is significantly stronger than the common austenitic grades, and it is also characterized by high ductility and impact strength.
| Standard | UNS | Werkstoff Nr. | EN | SS | AFNOR |
| 254 SMO | S31254 | 1.4547 | X1CrNiMoCuN20-18-7 | 2378* | Z1 CNDU 20.18.06AZ* |
Chemical Composition, %
| Carbon | Chromium | Nickel | Molybdenum | Nitrogen | |
| 0.020 max | 19.5 -20.5 | 17.5 – 18.5 | 6.0 – 6.5 | 0.18 – 0.22 | |
| Copper | Sulfur | Phosphorus | Silicon | Manganese | Iron |
| 0.50 – 1.00 | 0.010 max | 0.030 max | 0.80 max | 1.00 max | Balance |
Mechanical Properties
Typical mechanical properties for grade 254 SMO Bolts
| Properties | Metric | Imperial |
| Tensile strength | 680 MPa | 98600 psi |
| Yield strength | 300 MPa | 43500 psi |
| Modulus of elasticity | 195 GPa | 28300 ksi |
| Shear modulus | 75 GPa | 10900 ksi |
| Poisson’s ratio | 0.30 | 0.30 |
| Elongation at break | 50 % | 50 % |
| Hardness, Brinell | 210 | 210 |
3. Types of SMO 254 Bolt nut washer stud screw
| SMO 254 Hex Head Bolt | SMO 254 Hex Head Bolt 254 SMO Hex Head Bolt UNS S31254 Hex Head Bolt WERKSTOFF NR. 1.4547 Hex Head Bolt ASTM A479 SMO 254 Hex Head Bolt |
| SMO 254 Square Bolt | SMO 254 Square Bolt 254 SMO Square Bolt SMO 254 Square Bolt UNS S31254 Square Bolt WERKSTOFF NR. 1.4547 Square Bolt ASTM A479 254 SMO Square Bolt |
| SMO 254 U Bolt | SMO 254 U Bolt 254 SMO U Bolt UNS S31254 U Bolt SMO UNS S31254 U Bolt ASTM A479 254 SMO U Bolt |
| SMO 254 Hex Bolt | SMO 254 Hex Bolt 254 SMO Hex Bolt UNS S31254 Hex Bolt WERKSTOFF NR. 1.4547 Hex Bolt ASTM A479 254 SMO Hex Bolt |
| SMO 254 Counter sunk Bolt | SMO 254 Counter sunk Bolt 254 SMO Counter sunk Bolt UNS S31254 Counter sunk Bolt WERKSTOFF NR. 1.4547 Counter sunk Bolt ASTM A479 254 Counter sunk Bolt |
| SMO 254 Hex Head Nut | SMO 254 Hex Head Nut 254 SMO Hex Head Nut UNS S31254 Hex Head Nut WERKSTOFF NR. 1.4547 Hex Head Nut ASTM A479 254 SMO Hex Head Nut |
| SMO 254 Square Nut | SMO 254 Square Nut 254 SMO Square Nut UNS S31254 Square Nut WERKSTOFF NR. 1.4547 Square Nut ASTM A479 254 SMO Square Nut |
| SMO 254 Lock Nut | SMO 254 Lock Nut 254 SMO Lock Nut UNS S31254 Lock Nut WERKSTOFF NR. 1.4547 Lock Nut ASTM A479 254 SMO Lock Nut |
| SMO 254 wing Nut | SMO 254 wing Nut 254 SMO wing Nut UNS S31254 wing Nut WERKSTOFF NR. 1.4547 wing Nut ASTM A479 254 SMO wing Nut |
| SMO 254 Coupling Nut | SMO 254 Coupling Nut 254 SMO Coupling Nut UNS S31254 Coupling Nut WERKSTOFF NR. 1.4547 Coupling Nut ASTM A479 SMO 254 Coupling Nut |
| SMO 254 Dome Nut | SMO 254 Dome Nut 254 SMO Dome Nut UNS S31254 Dome Nut WERKSTOFF NR. 1.4547 Dome Nut ASTM A479 254 SMO Dome Nut |
| SMO 254 Acorn Nut | SMO 254 Acorn Nut 254 SMO Acorn Nut UNS S31254 Acorn Nut WERKSTOFF NR. 1.4547 Acorn Nut ASTM A479 254 SMO Acorn Nut |
5. 254SMO bolt nut washer screw stud PMI test:
