Specification for 18/9 chromium-nickel corrosion-resisting steel (niobium stabilized) billets, bars, forgings and parts (540 MPa: limiting ruling section 150 mm)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.08 | ||
| Si | 0.20 | 1.00 | ||
| Mn | 0.50 | 2.00 | ||
| P | - | 0.035 | ||
| S | - | 0.025 | ||
| Cr | 17.00 | 19.00 | ||
| Ni | 8.00 | 11.00 | ||
| Mo | - | 1.00 | ||
| Nb | 10×C | 1.10 |
Specification for 18/9 chromium-nickel corrosion-resisting steel (niobium stabilized) billets, bars, forgings and parts (540 MPa: limiting ruling section 150 mm)
| 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) |
|---|---|---|---|---|---|---|
| 992 (≥) | 795 (≥) | 13 | 24 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 231 |
| 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 |
|---|---|---|---|---|---|---|---|
| 162 (≥) | 379 (≥) | 44 | 22 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 698 | 624 | 371 |
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