Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | 0.04 | 0.10 | ||
Si | - | 1.00 | ||
Mn | - | 2.00 | ||
P | - | 0.045 | ||
S | - | 0.025 | ||
Cr | 17.00 | 19.00 | ||
Mo | - | - | ||
Ni | 9.00 | 12.00 | ||
Ti | - | 0.80 |
Steel boiler and superheater tubes. Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties
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) |
---|---|---|---|---|---|---|
565 (≥) | 228 (≥) | 34 | 32 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 432 |
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 |
---|---|---|---|---|---|---|---|
474 (≥) | 979 (≥) | 32 | 13 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 | |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
573 | 718 | 942 |
We can customize the production of 321S51 grade, contact us for the best solution.
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