ASTM A479 UNS S31254 254 SMO Fasteners, High Tensile Fasteners, Custom Grade & Size Available At Best Price & Free Sample
Vision Alloys are the leading manufacturer of high integrity 254 SMO Fasteners (e.g. bolts, set screws, stud-bolts, nuts and washers), meeting clients’ exacting demands for critical applications in hostile environments. Whether for offshore (buoyancy and petrochemical), seawater, pump, valve or nuclear, the demands for an exceptional service and supply is never ending. We believe manufacturing bolting in exotic materials is an art form and it is something we have perfected at Vision Alloys.
Our 254 SMO Fasteners product range includes 254 SMO Bolts, Hexagon head bolt, Hexagon head screw, Round head square neck bolt, Hexagon socket head cap screw in full thread and half thread, Hexagon wood screw, Hexagon socket button head screw, Hexagon socket button flange screw, Hexagon socket counter sunk head cap screw in full thread and half thread, square nuts, square weld nuts, hexagon weld nuts, thick nyloc nuts, hexagon flange nuts, threaded rods, dowel screws, Plain / Flat Washer, Spring Washers, Countersunk Washer,Tooth Lock Washer and many more. We provide products as per DIN, ANSI, JIS standards.
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..If we do not have your 254 SMO Fasteners in stock (Inch or Metric) we can have these manufactured to your specification.
Material |
Size |
Length |
Specification |
254 SMO
|
M02 to M30 |
3 mm |
IS BS ASTM |
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.
|
In Form of: |
Hex, Square, Round , Threading as per Gauge Etc. |
Standard |
UNS |
Werkstoff Nr. |
EN |
SS |
AFNOR |
254 SMO |
S31254 |
1.4529 |
X1CrNiMoCuN20-18-7 |
2378* |
Z1 CNDU 20.18.06AZ* |
Chemical Composition
Typical compositional ranges for grade 254 SMO Fasteners
Element |
Content (%) |
Chromium, Cr |
55.69 |
Iron, Fe |
20 |
Nickel, Ni |
18 |
Molybdenum, Mo |
6.1 |
Nitrogen, N |
0.20 |
Carbon, C |
0.010 |
Mechanical Properties
Typical mechanical properties for grade 254 SMO Fasteners
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 |
Physical Properties
Typical Physical properties for grade 254 SMO Fasteners
Properties |
Metric |
Imperial |
Density |
8 g/cm3 |
0.289 lb/in3 |
Thermal Properties
Typical Thermal Properties for grade 254 SMO Fasteners
Properties |
Metric |
Imperial |
Thermal expansion co-efficient (@20-100°C/68-212°F) |
16.5 µm/m°C |
9.17 µin/in°F |
Thermal conductivity |
14 W/mK |
97.2 BTU in/hr.ft².°F |
