High-Temperature Alloys in the Energy Industry

High-temperature alloys are essential for modern energy infrastructure, enabling gas turbines, nuclear reactors, geothermal systems, and hydrogen production to operate reliably under extreme thermal and corrosive conditions.

1. Nickel-Based Superalloys 

Used in the hottest sections of gas turbines, steam turbines, and ultra-supercritical coal plants.

• Alloy 718: Turbine discs, blades, shafts (up to 650°C)

• Alloy 625: Heat exchangers, exhaust systems, FGD components

• Alloy 740H / Alloy 282: Advanced ultra-supercritical coal plants (700°C+ creep strength)

• UNS N07001 / Waspaloy / 2.4654 / Nimonic Series: Turbine discs, seals, high-temperature bolts (up to 815°C)

UNS N07718 / Alloy 718 / 2.4668	UNS N06625 / Alloy 625 / 2.4856	UNS N07208 / Alloy 282	UNS N07001 / Waspaloy / 2.4654

2. Cobalt-Based Superalloys 

Selected for components requiring galling resistance, hardness, and sulfidation protection.

• Alloy 6B: Valve seats, pump wear pads, steam turbine components

• Alloy 188 / L605: Combustion chambers, flame holders, turbine seals (up to 1095°C)

• MP159: Ultra-high-strength fasteners (265 ksi) for turbines and downhole tools

UNS R30016 / Cobalt Alloy 6B	UNS R30188 / Alloy 188 / 2.4683	UNS R30605 / Alloy L605 / 2.4964	UNS R30159 / MP159 Cobalt Alloy

3. Titanium Alloys 

Chosen for lightweight strength and corrosion resistance in aggressive environments.

• Grade 2 Titanium: Geothermal piping, heat exchangers, seawater systems

• Grade 5 (Ti-6Al-4V): Compressor blades, structural components, fasteners

• Grade 7 (Ti-0.2Pd): Aggressive geothermal brines, reducing acid environments

Grade 2 Pure Titanium - UNS R50400	Titanium Grade 5 - Ti-6Al-4V - UNS R56400	Titanium Grade 7 - Ti-0.2Pd - UNS R52400

4. Stainless Steels 

Balance of strength, corrosion resistance, and cost-effectiveness.

• 321 / 347: Superheater tubes, heat exchangers, exhaust systems (up to 850°C)

• 309 / 310: Furnace components, burner parts, thermal processing (up to 1100°C)

• 316L / 317L: Nuclear piping, pressure vessels, geothermal heat exchangers

• 17-4 PH / 15-5 PH: High-strength fasteners, pump shafts, turbine components

ZYTC Alloy supplies certified nickel, cobalt, titanium, and stainless steel alloys for the energy industry, meeting ASTM, ASME, NACE, and AMS standards with full traceability.

Contact us for technical datasheets and competitive pricing.

Email: daisy@zytcsteel.com

WhatsApp/WeChat: +86 17335753350