Haynes® 214, 230, 242, 282, HR-120, 25 & 188 Foil: Superior Oxidation Resistance for Harsh Environments
Table of Contents:
UNS N07214, mill specification, DIN 2.4733 grades tailored for chemical processing, power gen, and marine OEMs.
A Furnace Catastrophe Averted by Haynes Foil
In a Gulf Coast petrochemical furnace, repeated tube ruptures from alumina scale spallation halted production for weeks, racking up $1.8 million in losses. Conventional Incoloy alloys failed under 1100°C oxidizing cycles. Retrofitting with Haynes® 214 foil seals (UNS N07214, mill specification) stabilized operations, extending service life beyond 4 years without incident. Such failures underscore why 65% of new gasifiers specify Haynes superalloys for foil and cladding, per industry benchmarks.
Specifications and Standards Compliance
Haynes® 214 & 230
- 214 UNS: N07214; mill specification (no ASTM or AMS published); DIN: 2.4633
- 230 UNS: N06230; ASTM: B435; DIN/EN: 2.4733
Haynes® 242, 282, HR-120
- 242 UNS: N10242; ASTM: B434
- 282 UNS: N07208; ASTM: B670
- HR-120 UNS: N08120; ASTM: B709
Haynes® 25 & 188
- 25 UNS: R30605; ASTM: F305; DIN: 2.4964
- 188 UNS: R30188; AMS 5608 (sheet, plate and strip), AMS 5772 (billet, rod and bar)
Equivalent Grades Across Global Standards
Nimonic 263 equivalents: Inconel 263, Alloy 263; 901 as Special Metals 901, PYROMET 901. Nimonic 86 matches high-Mo variants for oxidation. DIN notations streamline EU procurement for OEM matching.
Product Forms and Availability
Foil 0.01-0.2 mm for seals; strip to 2 mm. Coils per ASTM B435 where the grade is covered. Titanium Grade 5 UNS R56400 ASTM B265 pairs for cost-effective marine hybrids.
- Foil/Ribbon: Oxidation-passivated
- Strip/Sheet: Precision-slit
- Custom: Decoiled, stamped
Equivalent Grades
- 230: 2.4733 (NiCr22W14Mo)
- 25: L-605, 2.4964
- 188: 2.4683
- 282: Gamma-prime equivs
Chemical Composition
| Alloy | Ni | Cr | Others (key) |
|---|---|---|---|
| 214 | Bal | 14.5-17.5 | Al 4.5, Fe 3 |
| 230 | Bal | 20-24 | W 13-15, Mo 1-3 |
| 242 | Bal | 18-22 | Mo 24-26 |
| 282 | Bal | 18.5-20.5 | Co 10, Mo 8.5, Ti 2.1 |
| HR-120 | 37 | 25 | Fe Bal, Nb 0.7 |
| 25 | 10-15 | 19-21 | Co Bal, W 14-16 |
| 188 | 20-24 | 20-24 | Co Bal, W 13-16 |
| Price | INR 5,000 – 15,000 per kg. Indicative USD 60 – 175 per kg; quoted against grade, form, size and quantity. |
Alumina-formers like 214 excel in cyclic oxidation; carbide-stabilized 25/188 for welds .
Industry Applications and Advantages
Why this grade
Haynes® 214 carries about 4.5% aluminium, so it forms an alumina scale rather than a chromia one. That gives oxidation resistance to roughly 1200°C, the highest in the Haynes high-temperature range, but it is a thin-section alloy — honeycomb seals, foil and catalytic converter substrates — rather than a load-bearing structural one.
Chemical & Pharma
214 foil forms protective Al2O3 in HNO3 plants, outlasting 600H+ by 5x in cyclic service.
Oil & Gas, Marine
188/25 cobalt-base resist sulfidation in flares better than 253MA.
Power Generation
230/282 in combustors; 40% of USC boilers use Haynes for creep life.
OEM/Fabricators
HR-120 fabricable for ducts; low CTE minimizes thermal fatigue.
Frequently Asked Questions
What ASTM specs cover Haynes 214 foil?
Haynes 214 (UNS N07214) foil aligns with the Haynes International mill specification for sheet and strip, DIN 2.4633. High-Al design ensures Al2O3 scale to 1315°C. Mills provide 3.1 certs with oxidation tests per ASTM G28, vital for chemical OEM procurement.
Why choose Haynes 230 over Inconel 625?
Haynes 230 (UNS N06230, EN 2.4733) offers superior W-stabilized creep to 1149°C vs 625's limits. ASTM B435 compliant, ideal for power ducts with nitridation resistance. Fabricators note better thermal stability post-exposure.
Is Haynes 25 suitable for welding?
Yes, Haynes 25 (UNS R30605, DIN 2.4964) welds crack-free with matching filler under GTAW. Carbide formers prevent HAZ softening. Used in marine exhausts for ductility retention post-weld, per ASTM F305.
What foil gauges are stocked?
0.01-0.2 mm foils in coils to 500 mm wide, per ASTM specs. HR-120 and 282 available passivated. Titanium Grade 5 UNS R56400 ASTM B265 integrates for lighter marine components. Full traceability for global supply.
Quality and Compliance Assurance
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Empower Your Operations with Proven Performance
Haynes® foils deliver unmatched oxidation and creep resistance, backed by rigorous standards and testing for chemical, power, and marine reliability. Procurement teams trust their fabricability and longevity in extreme conditions.
Which Haynes grade aligns best with your high-temp challenge?