Nickel Alloy Alloy 333
UNS N06333 · also Haynes 333
Alloy 333 (N06333, Haynes 333) is a solid-solution-strengthened Ni-Co-Cr high-temperature alloy that balances oxidation resistance, fabricability and thermal-fatigue resistance for gas-turbine hot sections.
Reference datasheet — Alloy 333 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the SA condition
Alloy 333 tempers and conditions
Alloy 333 is supplied in 3 conditions, soft to hard. SA is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SADefault Solution annealed | Standard supply condition for sheet, plate, bar and tube; best combination of ductility, formability and high-temperature stability. | 310 | 690 | 50 | 10 HRC | 1.5 % IACS |
As-welded deposit | Typical joint condition for fabricated combustion hardware; weld metal normally matches or slightly exceeds annealed base-metal strength. | 380 | 680 | 35 | 205 HB | 1.5 % IACS |
Cold worked | Choose only where higher room-temperature strength/hardness is needed; strength is lost on first exposure above ~700 °C. | 700 | 950 | 15 | 25 HRC | 1.5 % IACS |
Supply forms, finishes and certifications
Ways Alloy 333 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
SA-BAR | SA Bar/Billet | Supply form |
SA-Plate | SA Plate | Supply form |
SA-SHEET | SA Sheet/Strip | Supply form |
What is Alloy 333?
Alloy 333 (N06333, Haynes 333) is a solid-solution-strengthened Ni-Co-Cr high-temperature alloy that balances oxidation resistance, fabricability and thermal-fatigue resistance for gas-turbine hot sections. Annealed material provides 310 MPa yield, 690 MPa tensile strength and 50 % elongation with a maximum service temperature of 1100 °C, and is stocked as sheet, plate and bar. Because it is not precipitation strengthened, creep strength is below that of aged 718 or Waspaloy, and machinability is low (score 25). Availability is limited; Hastelloy X is the usual comparable sheet alloy for combustor hardware. Alloy 333 has a density of 8.14 g/cm³ (0.294 lb/in³), lighter than 74% of nickel alloy grades. It melts at 1,330°C (2,426 °F). Alloy 333 has a yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 74% of nickel alloy grades. Elongation at break is 50% and the elastic modulus is 203 GPa (29.4 Msi).
What is Alloy 333 used for?
- combustor liners
- afterburner components
- industrial furnace hardware
Advantages
- Ductile — tolerates forming and impact — 50%, better than 88% of nickel alloy grades
- High service temperature — 1,100°C (2,012 °F), better than 88% of nickel alloy grades
Alloy 333 properties
Typical room-temperature values for Alloy 333-SA; bars are the position among nickel alloy grades.
Physical3
Alloy 333 has a density of 8.14 g/cm³ (0.294 lb/in³), lighter than 74% of nickel alloy grades. It melts at 1,330°C (2,426 °F).
Mechanical17
Alloy 333 has a yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 74% of nickel alloy grades. Elongation at break is 50% and the elastic modulus is 203 GPa (29.4 Msi).
Thermal6
Alloy 333 is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 11 W/m·K (6.36 BTU/hr·ft·°F), worse than 60% of nickel alloy grades. Thermal expansion is 13.9 µm/m·K (7.72 µin/in·°F).
Electrical3
Alloy 333 conducts electricity at 1.5 % IACS, better than 59% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), worse than 71% of nickel alloy grades.
Sustainability4
Producing a kilogram of Alloy 333 takes about 165 MJ of energy and emits 12.5 kg of CO₂ — more than 54% of nickel alloy grades. Typical recycled content is 35%.
Manufacturability8
Alloy 333's machinability is poor (25/100, better than 76% of nickel alloy grades); weldability very good (78/100); formability very good (70/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the nickel alloy family
Yield strength against density for every nickel alloy grade FabDigit runs. Alloy 333 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Alloy 333
Is Alloy 333 easy to machine?
Machine like Hastelloy X: rigid setups, positive-rake carbide, slow speeds (15–25 m/min), heavy constant feed to cut under the work-hardened layer, flood coolant.
Can Alloy 333 be welded?
Readily joined by GTAW/GMAW/resistance welding with matching or Hastelloy X-type filler; keep heat input and interpass temperature low, no preweld or postweld heat treatment normally required.
Can Alloy 333 be formed, bent or molded?
Excellent cold formability in the annealed condition but high work-hardening rate — allow intermediate anneals at ~1175 °C with rapid cooling; hot work 1150–1200 °C.
Alloy 333 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cr | 24 – 27 | 25 |
| Fe | 16 – 20 | 18 |
| Co | 2.5 – 4 | 3 |
| Mo | 2.5 – 4 | 3 |
| W | 2.5 – 4 | 3 |
| Sideliberate Si addition aids oxidation resistance | 0.5 – 1.5 | 1 |
| Mn | ≤ 2 | 0.5 |
| C | ≤ 0.15 | 0.05 |
| P | ≤ 0.03 | |
| S | ≤ 0.02 | |
| Nibalance, nominal 45% | ≥ 42 (balance) |
What surface finishes work on Alloy 333?
Not anodizable; descale by grit blast plus acid pickling, then passivate — a protective Cr₂O₃/SiO₂ scale forms in service and should not be removed unnecessarily.
Surface treatments FabDigit runs on nickel alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Plating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Nickel Alloy Alloy 333 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- N06333
- Trade names
- Haynes 333
How much does Alloy 333 cost?
Alloy 333 is a high-cost nickel alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Alloy 333 — frequently asked
What is Alloy 333 used for?
Alloy 333 is typically used for combustor liners, afterburner components and industrial furnace hardware. In short: sheet alloy for 1100 °C; good thermal-fatigue resistance; solid solution, no aging needed.
What is the yield strength of Alloy 333?
Alloy 333 has a typical yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 74% of nickel alloy grades. Strength varies by condition: see the 3 listed tempers.
Is Alloy 333 easy to machine?
Not especially — machinability is rated poor (25/100, better than 76% of nickel alloy grades). Machine like Hastelloy X: rigid setups, positive-rake carbide, slow speeds (15–25 m/min), heavy constant feed to cut under the work-hardened layer, flood coolant.
Can Alloy 333 be welded?
Yes — weldability is rated very good (78/100). Readily joined by GTAW/GMAW/resistance welding with matching or Hastelloy X-type filler; keep heat input and interpass temperature low, no preweld or postweld heat treatment normally required.
What surface finishes work on Alloy 333?
Not anodizable; descale by grit blast plus acid pickling, then passivate — a protective Cr₂O₃/SiO₂ scale forms in service and should not be removed unnecessarily.
Can Alloy 333 be formed, bent or molded?
Excellent cold formability in the annealed condition but high work-hardening rate — allow intermediate anneals at ~1175 °C with rapid cooling; hot work 1150–1200 °C.
What is the maximum service temperature of Alloy 333?
Alloy 333 is rated for continuous use to about 1,100°C (2,012 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Alloy 333-SA and Alloy 333-CW?
SA is the default condition — standard supply condition for sheet, plate, bar and tube; best combination of ductility, formability and high-temperature stability. CW: choose only where higher room-temperature strength/hardness is needed; strength is lost on first exposure above ~700 °C. Yield strength is 310 MPa in SA versus 700 MPa in CW.
How much does Alloy 333 cost?
Alloy 333 is a high-cost nickel alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- HAYNES 333 alloy technical data — Haynes International (2020)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (high-temperature corrosion of Ni-base alloys) — ASM International (2005)
- UNS N06333 alloy registration — SAE/ASTM Unified Numbering System (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.