Seamless nickel-chromium-iron alloy heat exchanger tubes
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.05 | ||
| Si | - | 0.50 | ||
| Mn | - | 0.50 | ||
| P | - | 0.03 | ||
| S | - | 0.015 | ||
| Cr | 27.00 | 31.00 | ||
| Ni | 58.00 | - | ||
| Cu | - | 0.50 | ||
| Al | - | - | ||
| Ti | - | - | ||
| Fe | - | - |
Seamless nickel-chromium-iron alloy heat exchanger tubes
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 466 (≥) | 726 (≥) | 31 | 14 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 413 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 956 (≥) | 897 (≥) | 11 | 22 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 424 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 863 | 565 | 844 |
We can customize the production of NCF 690 TB grade, contact us for the best solution.
–sales@specificsteel.com