ASTM A193 /ASTM A194 : B8MLCuN, B8MLCuNA
UNS S31254,
SMO 254 Nuts and Bolts Specifications
Chemical Composition:
| SMO 254 | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 17.5 – 18.5 | 0.02 max | 6 – 6.5 | 1 max | 0.8 max | – | 0.5 – 1 | 0.01 max | 0.03 max | 19.5 – 20.5 |
Mechanical Properties:
@ UNS S31254
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.0 g/cm3 | 1320-1390 ℃ | 300 | 650 | 35 % |
Mechanical Properties:
@ ASTM A193 B8MLCuNA
|
Hardness Max. |
Tensile Strength min. |
Yield Strength (0.2%Offset) |
Reduction Area | Elongation | |
| Inch Products |
192HB or 90 HRB
|
75 ksi | 30ksi | 50 | 30 % |
| Metric Products |
192HB or 90 HRB
|
515 Mpa | 204 Mpa | 50 | 30% |
Equivalent Standards:
| STANDARD | UNS | W NR. | AFNOR | EN | JIS | SIS | GOST |
| SMO 254 | S31254 | 1.4547 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | – | 2378 | – |
AF Aanuraj Sandvik 254 SMO Threaded Fasteners are used in the following applications:
- Equipment for handling seawater – heat exchangers, cooling water systems, ballast water systems, firefighting systems etc.
- Equipment in pulp bleaching plants.
- Components in gas cleaning systems.
Also in following Industries it’s widely used.
| Industrial categories | Petrochemical Industries |
|---|---|
| Chemical industry | Pulp & Paper Industries |
| Petrochemical industry | Oil & Gas Industries |