Haynes 230 vs Waspaloy: 43% composition overlap. Significantly different materials serving different application areas.
Haynes 230 vs Waspaloy
Side-by-side chemical composition and mechanical property comparison.
Overview
Haynes 230
2.4733
Nickel-chromium-tungsten alloy — THE combustor can material for gas turbines. Outstanding oxidation resistance to 1149°C for prolonged exposure. Excellent long-term thermal stability (no sigma/mu phase after 16000h at 649-870°C). Lower thermal expansion than most high-temp alloys. Lanthanum addition improves oxide scale adherence. Used for gas turbine combustion cans, transition ducts, furnace retorts, and catalyst grids in nitric acid production.
Waspaloy
2.4654
Nickel-based gamma-prime strengthened superalloy — THE turbine disc material. Excellent creep-rupture strength up to 650°C (rotating) and 870°C (static). Developed 1950s by Pratt & Whitney. Triple-aged (solution + stabilize + precipitation) for peak properties. Superior to Inconel 718 above 650°C. Used for compressor and rotor discs, shafts, spacers, seals, rings, casings, and fasteners in gas turbine engines.
| Haynes 230 | Waspaloy | |
|---|---|---|
| Material Number | 2.4733 | 2.4654 |
| Category | Nickel Alloys | Nickel Alloys |
| Standard | ASTM B435 | ASTM B637 |
Chemical composition (wt%)
| Element | Haynes 230 | Waspaloy | Overlap |
|---|---|---|---|
| C | 0.05–0.1% | 0.02–0.1% | OK |
| Si | 0.25–0.75% | 0–0.75% | OK |
| Mn | 0.3–1% | 0–1% | OK |
| Cr | 20–24% | 18–21% | Partial |
Mechanical properties
| Property | Haynes 230 | Waspaloy | Unit |
|---|---|---|---|
| tensile_strength | ≥ 760 | 1170–1310 | MPa |
| yield_strength | ≥ 310 | 720–895 | MPa |
| elongation | ≥ 40 | 15–25 | % |
Compatibility Assessment
Haynes 230 and Waspaloy have significantly different compositions (43% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Haynes 230 the same as Waspaloy?
Haynes 230 and Waspaloy have a 43% composition overlap. They are generally not directly interchangeable.
Can I replace Haynes 230 with Waspaloy?
Generally not recommended. The compositions differ significantly (43% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between Haynes 230 and Waspaloy?
The main differences are in the following elements: Cr, Mo, Al, Co. Haynes 230 is a Nickel Alloys grade, while Waspaloy is a Nickel Alloys grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.