In a high-stakes chemical plant off India's west coast, a sudden failure in hydrofluoric acid vapor lines halted production, costing millions in downtime until engineers switched to Haynes® 242 Plates . This age-hardenable nickel-molybdenum-chromium alloy (UNS N10242) turned the crisis around with its unmatched resistance to fluorine environments, low thermal expansion, and creep strength up to 1300°F (704°C), outperforming standard alloys by delivering double the tensile properties without distortion.
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Haynes® 242 plates excel where common high-temp alloys like Inconel or basic stainless falter under thermal cycling, fluoride attack, or dimensional instability. Procurement heads and engineers in chemical, oil & gas, marine, pharma, and power generation choose it for gas turbine seal rings, containment rings, and subsea components because its long-range ordering reaction boosts strength while retaining 40%+ elongation post-aging stats that slash maintenance and ensure ASME compliance.
Unlike Alloy 909, which shows cracking and internal oxidation after 4000 hours at 1200°F (650°C), Haynes® 242 retains superior impact energy and ductility, making it ideal for aerospace duct segments, engine casings, and high-precision rocket nozzle components. For marine and oil & gas, its corrosion resistance in sour service and seawater beats competitors, with thickness loss just 0.3 mm in 70% HF at 1670°F (910°C).
Aurico Alloys LLP stands as a trusted supplier, manufacturer, and stockist of Haynes® 242 Plates, providing affordable, best-quality, authentic stock with MTC EN 10204 3.1 certification to chemical, oil & gas, marine, pharma, power industries, and hardware stores exporting from India to abroad as Haynes 242 plate suppliers in Mumbai.
High-quality Haynes® 242 Plates ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP, Haynes 242 plate suppliers in Mumbai |
|---|---|
| Grade | Haynes® 242 (UNS N10242) |
| Standards | ASTM B434 |
| Thickness Range | 4.75 mm – 150 mm |
| Width/Length | Up to 72″ (1829 mm) x 240″ (6096 mm) |
| Finish | Annealed, descaled, polished, bright annealed |
| Delivery | Stock, custom cut, MTC EN 10204 3.1, global export |
| Price | INR 5,000 – 15,000 per kg. Indicative USD 60 – 175 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N10242 |
| Density | 9.05 g/cm3 |
| Melting range | 1290-1375 °C |
| Electrical resistivity | 122.0 µΩ·cm |
| Thermal diffusivity | 0.0305 cm²/s |
| Thermal conductivity | 11.3 W/m·°C |
| Specific heat | 386 J/kg·°C |
| Coefficient of expansion (25-100 °C) | 10.8 µm/m·°C |
| Dynamic modulus of elasticity | 229 GPa |
| Plate, sheet and strip specification | ASTM B434 |
Identifiers and physical constants for Haynes 242. A dash means no such designation is published for this grade.
Stock & Product Availability
Haynes 242 plate stockist in Mumbai like Aurico Alloys LLP offer ASTM B434 Haynes 242 plates for aerospace duct segments and engine casings. Sizes from 4.75 mm to 150 mm thick, ready for chemical plant heat exchanger baffles and offshore needs.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Molybdenum (Mo) | 25 nominal | |
| Chromium (Cr) | 8 nominal | |
| Iron (Fe) | — | 2 |
| Cobalt (Co) | — | 1 |
| Manganese (Mn) | — | 0.8 |
| Silicon (Si) | — | 0.8 |
| Aluminium (Al) | — | 0.5 |
| Carbon (C) | — | 0.03 |
| Boron (B) | — | 0.006 |
Composition for Haynes 242. Figures given as a range or a maximum are limits and those marked nominal are not; none of them are measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Value (Aged) |
|---|---|
| Tensile Strength (MPa/ksi) | ≥1000 / 145 (at 1200°F) |
| Yield Strength 0.2% (MPa/ksi) | ≥600 / 87 |
| Elongation (%) | ≥40 |
| Hardness (HRBW) | ≤95 |
| Thermal Expansion (µin/in-°F to 1000°F) | 5.4–6.2 |
| Max Service Temp (°F/°C) | 1500 / 816 |
Applications & Benefits
Why this grade
Haynes® 242 is strengthened by long-range ordering of a Ni2(Mo,Cr) phase rather than by gamma prime. It delivers very high strength to about 700°C together with a low coefficient of thermal expansion, and it is that combination — strength plus dimensional stability — that puts it into aircraft engine seal rings, containment rings, ducting and fasteners.
- Chemical & Pharma: Fluorine resistant Haynes 242 plates for hydrofluoric acid vapor processing, Alloy 242 plate stockist in Mumbai for fluoroelastomer extrusion equipment, durable for high-temperature fluoride salt mixtures and pharmaceutical waste treatment.
- Marine, Oil & Gas: Marine grade Haynes 242 plates for subsea sensors requiring dimensional stability, Haynes 242 plate stockholders in Maharashtra for oilfield high-pressure pumps, corrosion resistant for offshore platform turbine exhaust liners.
- Power & Aerospace: Haynes 242 plate suppliers in Mumbai for gas turbine seal rings and containment rings, ASTM B434 Haynes 242 plates for aerospace duct segments and engine casings, low thermal expansion Alloy 242 plates for high-precision rocket nozzle components.
- Sourcing Benefits: Haynes 242 vs Alloy 909 shows better thermal stability and fatigue resistance; verified Haynes 242 plate exporters in India with MTC EN 10204 3.1, custom cut for heat exchanger baffles.
FAQ & Search Trends
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.
Conclusion
Haynes® 242 Plates (UNS N10242, ASTM B434) from reliable sources like Aurico Alloys LLP empower procurement teams with low-expansion, high-strength solutions that outlast alternatives in corrosive, high-heat service ensuring uptime and compliance across industries. Are your critical assets protected with Haynes® 242 plates?