Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (niobium stabilized) (35 tonf/sq in: limiting ruling section 6 in)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.15 | ||
| Si | 0.20 | 1.00 | ||
| Mn | 0.50 | 2.00 | ||
| P | - | 0.035 | ||
| S | - | 0.025 | ||
| Cr | 22.00 | 25.00 | ||
| Ni | 13.00 | 16.00 | ||
| Mo | - | - | ||
| Nb | - | 8×C |
Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (niobium stabilized) (35 tonf/sq in: limiting ruling section 6 in)
| 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) |
|---|---|---|---|---|---|---|
| 998 (≥) | 756 (≥) | 44 | 43 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 122 |
| 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 |
|---|---|---|---|---|---|---|---|
| 621 (≥) | 182 (≥) | 21 | 12 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 121 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 542 | 877 | 499 |
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