Incoloy909 Material introduction
Incoloy909(UNS N19909) is Fe-Ni-Co Base precipitation hardening deformation superalloy, the service temperature is below 650 ℃. The alloy has high strength, high cold and thermal fatigue resistance, low expansion coefficient and constant elastic modulus, as well as good hot working plasticity, cold forming and welding properties. The main products are bar, wire, plate, strip and ring.
Incoloy909 chemical composition
element | C | Cr | Ni | Co | Al | Ti | Fe |
mass fraction/% | ≤0.06 | ≤1.00 | 35.00-40.0 | 12.00-16.00 | ≤0.15 | 1.30-1.80 | more than |
element | Nb+Ta | B | Si | Mn | P | S | Cu |
mass fraction/% | 4.3-5.2 | ≤0.012 | 0.25-0.50 | ≤1.00 | ≤0.015 | ≤0.015 | ≤0.500 |
Incoloy909 Physical and mechanical properties
density | melting point |
8.26g/cm³ | 1336-1384℃ |
varieties | Heat treatment method | θ/℃ | σb/MPa | σp0.2/MPa | δ5/% | Ψ/%
|
Bar, round cake, ring piece | systemⅠ | 20 | ≥1207 | ≥965 | ≥8 | ≥12 |
650 | ≥931 | ≥724 | ≥10 | ≥15 |
systemⅡ | 20 | ≥1172 | ≥862 | ≥10 | ≥15 |
650 | ≥896 | ≥655 | ≥10 | ≥20 |
Cold rolled strip | δ0.5-6.5 | annealing | 20 | ≤965 | ≤552 | ≥30 | - |
systemⅢ | 20 | ≥1172 | ≥862 | ≥10.0 | - |
δ0.5-0.76 | systemⅢ | 650 | ≥827 | ≥621 | ≥5.0 | - |
δ>0.76-6.5 | 650 | ≥827 | ≥621 | ≥8.0 | - |
Incoloy909 Heat treatment system
systemⅠ：For bars, forgings and rings，(965-1010)℃±15℃／AC+980℃±15℃*（1±0.25h/AC+745℃±10℃*(8±0.5)h / FC(55℃/h)→620℃±10℃*(8±0.5)h/AC;
systemⅡ：For short-time aging bars, forgings and rings，(965-1010)℃±15℃／AC+980℃±15℃*1±0.25）h/AC+745℃±10℃*(4±0.5)h/FC(55℃/h)→620℃±10℃*(4±0.5)h/AC;
systemⅢ：980℃±15℃/AC+980℃±15℃*（1±0.25）h/AC+745℃±10℃*(4±0.5)h/FC(55℃/h)→620℃±10℃*(4±0.5)h/AC For cold rolled sheet and strip。
The heat preservation time of solution treatment depends on the thickness of product section。
