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**Components HP and IP, High T LP, High T Rotor Diaphram Blades/Nozzles**

Casing/Steam Chest LP, High T Rotor Diaphram Blades/nozzles

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**List of Potential Materials HP, High T, Static and Dynamic**

Inconel 617 Inconel 625 Inconel 718 Inconel 740 Nimonic 105 Nimonic 115 Nimonic 263 Haynes 230 Haynes 282 U700 U710 U720 Waspaloy ODS-FeCrAl

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**Phase 1 – Disqualifying Factors HP Components – Rotor and Casing**

(Ti+Al )< 2.5 Weldability Yes - Inconel 617, Inconel 625, Inconel 718, Haynes 230, Inconel 740, Nimonic 263 No - U700, U710, U720, Waspalloy, Nimonic 105, Nimonic 115, Haynes 282 ODS-FeCrAl Parameter > 25 Larson-Miller Yes - Inconel 617, Inconel 740, Nimonic 263 No - Inconel 625, Inconel 718, Haynes 230 Machinability Inconel 617, Inconel 740, Nimonic 263

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**Phase 2 - Performance Ranking Rotor and Diaphragm**

Material Yield Strength Oxidation x 10 Cost x - 5 Total Inconel 617 283 8 10.70 309.5 Inconel 740 608 10 654.5 Nimonic 263 630 6 11.39 633.05

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**Phase 2 - Performance Ranking Casing**

Material Yield Strength Oxidation x 5 Cost x - 10 Total Inconel 617 283 8 10.70 216 Inconel 740 608 10 551 Nimonic 263 630 6 11.39 546.1

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**Phase 1 – Disqualifying Factors HP Components – Blades**

Weldability N/A Parameter > 25 Larson-Miller Yes - Inconel 617, Inconel 740, Nimonic 263, Nimonic 105, Nimonic 115, U720, Waspaloy, Haynes 282 No - Inconel 625, Inconel 718, Haynes 230 Machinability Yes - Inconel 617, Inconel 740, Nimonic 263,Nimonic 105, Nimonic 115, U720, Waspaloy, Haynes 282 No – U720

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**Phase 2 - Performance Ranking HP Blades**

Material Yield Strength Oxidation x 10 Cost x - 10 Total Inconel 617 283 8 10.70 256 Inconel 740 608 10 601 Nimonic 263 630 6 11.39 576.1 Nimonic 105 690 x 11.36 576.4 Nimonic 115 Waspaloy 650 5 10.30 597 Haynes 282 614 10.35 570

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**List of Potential Materials LP Components**

304 316Ti A286 253MA

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**Phase 1 – Disqualifying Factors LP Components**

(Ti+Al )< 2.5 Weldability Yes – 304, 316Ti, 253MA, A286 No - Parameter > ?? Larson-Miller Yes - Machinability

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