Product Information
Composition of 254 Pipe and Tubing
| Grade | 254 |
|---|
| UNS Designation | S32154 |
|---|
| Nickel (Ni) |
17.5–18.5 |
| Chromium (Cr) |
19.5–20.5 |
| Iron (Fe) |
Bal. |
| Molybdenum (Mo) |
6.0–6.5 |
| Titanium (Ti) Max. |
— |
| Aluminum (Al) Max. |
— |
| Cobalt (Co) Max. |
— |
| Tungsten (W) |
— |
| Vanadium (V) Max. |
— |
| Copper (Cu) Max. |
0.50–1.00 |
| Manganese (Mn) Max. |
1.00 |
| Niobium (Nb) plus Tantalum |
— |
| Carbon (C) Max. |
0.020 |
| Nitrogen (N) Max. |
0.18–0.25 |
| Silicon (Si) Max. |
0.80 |
| Sulphur (S) Max. |
0.010 |
| Phosphorous (P) Max. |
0.030 |
| Other Elements |
— |
Physical Properties of 254 Alloys in the Annealed Condition at -20°F to +100°F
| |
|
|
Tensile Strength | Yield Strength |
|
|
|
|
|
|
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
|---|
| 254 |
S31254 |
A249, A312 |
98,000 |
675 |
98 |
45,000 |
310 |
45 |
40 |
— |
96 Rb |
28.0 |
8.5 |
90 |
254 Product Range
| Alloy | UNS Designation | Werkstoff NR. | Specifications* |
|---|
| 254 |
S31254 |
1.4547 |
A/SA249, A269, A270, A/SA312 |
*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.