Ferritics Alloys 29-4C
Physical Properties of 29-4C Alloys in the Annealed Condition at -20°F to +100°F
| Tensile Strength | Yield Strength | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | UNS Desig-nation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| 29-4C | S44735 | A268 | 75,000 | 515 | 75 | 60,000 | 415 | 60 | 10* | — | 100 Rb | 28.0 | 5.2 | 119 |
*for 0.049” average wall
Composition of 29-4C tubing and pipe
| Grade | 29-4C |
|---|---|
| UNS Designation | S44735 |
| Nickel (Ni) | 1.00 |
| Chromium (Cr) | 28.00–30.00 |
| Iron (Fe) | Bal. |
| Molybdenum (Mo) | 3.60–4.20 |
| Titanium (Ti) Max. | ** |
| Aluminum (Al) Max. | — |
| Cobalt (Co) Max. | — |
| Tungsten (W) | — |
| Vanadium (V) Max. | — |
| Copper (Cu) Max. | — |
| Manganese (Mn) Max. | 1.00 |
| Niobium (Nb) plus Tantalum | ** |
| Carbon (C) Max. | 0.030 |
| Nitrogen (N) Max. | 0.045 |
| Silicon (Si) Max. | 1.00 |
| Sulphur (S) Max. | 0.030 |
| Phosphorous (P) Max. | 0.040 |
| Other Elements | — |
**(Ti + Cb) 0.20 - 1.00, & 6 (C + N) min
29-4C Product Range
| Alloy | UNS Designation | Werkstoff NR. | Specifications* |
|---|---|---|---|
| 29-4C | S44735 | N/A | A/SA268 |
*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.
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