Haynes 188 vs Haynes 230 vs Haynes 263 — Which High-Temperature Alloy Performs Best in 2025?

Haynes 188, Haynes 230, and Haynes 263 are three of the most widely used high-temperature Haynes superalloys in aerospace, gas turbines, chemical plants, and heat-treatment industries.

Although they belong to the same family, each alloy is designed for a different temperature range, mechanical strength requirement, and environmental resistance.

Haynes 188 — Cobalt-based, excellent oxidation resistance
Haynes 230 — Nickel-based, long-term stability at 1000–1150°C
Haynes 263 — Age-hardenable nickel alloy, high creep strength

This complete 2025 engineering guide compares all three to help you choose the best alloy for your project.

Chemical Composition Differences — Why They Matter

Alloy	Base	Key Elements	Strength Advantage
Haynes 188	Cobalt	Cr, W, Ni	Oxidation + High-temp ductility
Haynes 230	Nickel	Cr, W, Mo	Oxidation + long-term stability
Haynes 263	Nickel	Cr, Mo, Co	Age-hardened high strength

Summary:

188 → Best for oxidation-sensitive aerospace components
230 → Best for continuous high-temperature furnace & process systems
263 → Best for creep resistance under sustained high stress

Temperature Performance Comparison

Alloy	Max Service Temp	Best Use Range	Notes
Haynes 188	~1100°C	800–1100°C	Very good oxidation resistance
Haynes 230	1150°C	900–1150°C	Best long-term stability
Haynes 263	~950–1000°C	700–950°C	Best creep strength

Key Takeaway:

Haynes 230 has the highest temperature capability.
Haynes 188 excels in oxidation resistance at extreme heat.
Haynes 263 dominates in creep resistance at 700–950°C.

Mechanical Strength Comparison

Property	Haynes 188	Haynes 230	Haynes 263
Tensile Strength	High	High	Very High
Creep Resistance	Medium	High	Excellent
Fatigue Strength	Medium–High	High	Excellent
Ductility	Good	Good	Medium
Hardening Type	Solid Solution	Solid Solution	Age-Hardening

Why Haynes 263 stands out: Its age-hardening microstructure gives it the highest strength under long-term load.

Oxidation & Corrosion Resistance Comparison

Haynes 188 — Best Oxidation Resistance

Stable oxide scale formation
Withstands thermal cycling
Ideal for aerospace combustion environments

Haynes 230 — Best Overall Chemical Resistance

Resists oxidation, nitridation, and carburization
Performs well in process gas environments

Haynes 263 — Good Oxidation Resistance

Not as strong as 188 or 230 in extreme oxidizing furnace environments

Weldability & Fabrication

Alloy	Weldability	Notes
188	Good	Easier to weld than most cobalt alloys
230	Very Good	Excellent for fabrication
263	Good	Must be handled carefully due to age-hardening

Winner → Haynes 230 (best overall fabrication response)

Real-World Industrial Applications

Haynes 188 — Aerospace & Turbine Alloy

Combustion liners
Afterburners
Hot-section turbine components
Aviation exhaust ducts

Haynes 230 — Furnace & High Temperature Process Alloy

Furnace hardware
Gas turbine transition ducts
Heat exchanger tubing
Industrial heaters
Chemical processing equipment

Haynes 263 — High Strength Creep-Resistant Alloy

Turbine casings
High-stress combustion components
Aerospace structural components
High-pressure turbine seals

Cost Comparison (2025 Market)

Alloy	Cost Level	Notes
Haynes 188	Very High	Cobalt-based, expensive
Haynes 230	High	Premium nickel superalloy
Haynes 263	Medium–High	Age-hardenable but lower cobalt

Which Alloy Should YOU Choose?

Choose Haynes 188 if:

You need extreme oxidation resistance
Application involves jet engines or combustion systems
High thermal shock expected

Choose Haynes 230 if:

You need the highest operating temperature
Application involves furnaces, reactors, or chemical plants
Long-term stability is crucial

Choose Haynes 263 if:

You need highest creep strength
Application involves sustained load at 700–950°C
You need a weldable, formable, high-strength alloy

Summary Comparison Table

Feature	Haynes 188	Haynes 230	Haynes 263
Max Temp	1100°C	1150°C	950°C
Oxidation Resistance	Best	Excellent	Good
Creep Strength	Medium	High	Best
Fabrication	Good	Excellent	Good
Aerospace Use	High	Medium	High
Furnace Use	Medium	Best	Low
Cost	Very High	High	Medium-High

FAQ's

Which Haynes alloy lasts longest at 1100°C?

Haynes 230 — best long-term stability.

Which Haynes alloy is best for aerospace combustion parts?

Haynes 188 — excellent oxidation resistance.

Which alloy has the highest creep strength?

Haynes 263 — due to age-hardenable strengthening.

Which alloy is easiest to fabricate?

Haynes 230 — excellent weldability and formability.

Is Haynes 263 stronger than Inconel 625?

Yes — especially at high temperatures under creep conditions.

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