Specification for nickel-chromium-cobalt-titanium- aluminium heat-resisting alloy cold drawn wire for springs and springs (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.13 | ||
| Si | - | 1.00 | ||
| Mn | - | 1.00 | ||
| P | - | - | ||
| S | - | 0.015 | ||
| Cr | 18.00 | 21.00 | ||
| Ni | - | remaining | ||
| Mo | - | - | ||
| Co | 15.00 | 21.00 | ||
| Ti | 2.00 | 3.00 | ||
| Fe | - | 1.50 | ||
| Al | 1.00 | 2.00 | ||
| Cu | - | 0.20 | ||
| Zr | - | 0.15 | ||
| B | - | 0.020 | ||
| Bi | - | 0.0001 | ||
| Pb | - | 0.002 | ||
| Ag | - | 0.0005 |
Specification for nickel-chromium-cobalt-titanium- aluminium heat-resisting alloy cold drawn wire for springs and springs (Nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)
| 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) |
|---|---|---|---|---|---|---|
| 559 (≥) | 635 (≥) | 24 | 13 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 |
| 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 |
|---|---|---|---|---|---|---|---|
| 973 (≥) | 572 (≥) | 22 | 21 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 315 | 975 | 483 |
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