Nickel Alloy NiCo20Cr20MoTi
EN 2.4650
NiCo20Cr20MoTi (2.4650) is a precipitation-hardened Ni-Co-Cr superalloy with molybdenum and titanium additions, developed for high strength and creep resistance in aerospace turbine hardware.
Reference datasheet — NiCo20Cr20MoTi 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 ST condition
NiCo20Cr20MoTi tempers and conditions
NiCo20Cr20MoTi is supplied in 5 conditions, soft to hard. ST is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot rolled / hot forged + solution treated plate and forgings | Heavy plate, discs and rings hot worked then solution treated; slightly coarser grain and marginally lower strength than sheet. | 510 | 850 | 45 | 11 HRC | 1.5 % IACS |
As-welded deposit | Weld-metal/joint property level for fabricated sheet structures before the post-weld solution + age cycle. | 520 | 820 | 30 | 200 HB | 1.5 % IACS |
STDefault Solution annealed | Standard as-supplied sheet, plate, bar and ring condition: softest and most formable/weldable, aged after fabrication. | 540 | 880 | 42 | 190 HB | — |
Solution treated 1150 °C + aged 800 °C/8 h, air cooled | Full γ′-hardened service condition after welding and forming; use where room- and high-temperature strength and creep life matter. | 620 | 1,060 | 25 | 31 HRC | — |
Cold drawn | Cold-worked small bar, wire and strip where higher as-supplied strength and close tolerance are wanted; anneal before heavy forming. | 800 | 1,050 | 15 | 32 HRC | 1.5 % IACS |
What is NiCo20Cr20MoTi?
NiCo20Cr20MoTi (2.4650) is a precipitation-hardened Ni-Co-Cr superalloy with molybdenum and titanium additions, developed for high strength and creep resistance in aerospace turbine hardware. Its low Al+Ti level makes it one of the better-weldable γ′ alloys, so it suits fabricated hot-section sheet and ring assemblies; forms include sheet, plate, bar and forgings in solution-treated, aged, hot-rolled and cold-drawn conditions. Limits are a 800 °C maximum service temperature and low machinability (score 20), with all welding done before ageing. Alloy 718 is the lower-cost choice below 650 °C. NiCo20Cr20MoTi has a density of 8.36 g/cm³ (0.302 lb/in³), heavier than 54% of nickel alloy grades. It melts at 1,300°C (2,372 °F). NiCo20Cr20MoTi has a yield strength of 540 MPa (78.3 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 78% of nickel alloy grades. Elongation at break is 42% and the elastic modulus is 221 GPa (32.1 Msi).
What is NiCo20Cr20MoTi used for?
- turbine discs
- high-temperature fasteners
- gas turbine hot-section components
Advantages
- High strength — 540 MPa (78.3 ksi), better than 78% of nickel alloy grades
Limitations
- High embodied carbon — 17 kg CO₂/kg, worse than 96% of nickel alloy grades
NiCo20Cr20MoTi properties
Typical room-temperature values for NiCo20Cr20MoTi-ST; bars are the position among nickel alloy grades.
Physical3
NiCo20Cr20MoTi has a density of 8.36 g/cm³ (0.302 lb/in³), heavier than 54% of nickel alloy grades. It melts at 1,300°C (2,372 °F).
Mechanical15
NiCo20Cr20MoTi has a yield strength of 540 MPa (78.3 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 78% of nickel alloy grades. Elongation at break is 42% and the elastic modulus is 221 GPa (32.1 Msi).
Thermal6
NiCo20Cr20MoTi is rated for continuous service to 800°C (1,472 °F). It conducts heat at 11.7 W/m·K (6.76 BTU/hr·ft·°F), better than 61% of nickel alloy grades. Thermal expansion is 11.7 µm/m·K (6.5 µin/in·°F).
Electrical3
NiCo20Cr20MoTi conducts electricity at 1.5 % IACS, better than 59% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 51% of nickel alloy grades.
Sustainability4
Producing a kilogram of NiCo20Cr20MoTi takes about 235 MJ of energy and emits 17 kg of CO₂ — more than 94% of nickel alloy grades. Typical recycled content is 35%.
Manufacturability8
NiCo20Cr20MoTi's machinability is poor (20/100, better than 53% of nickel alloy grades); weldability very good (75/100); formability good (60/100).
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. NiCo20Cr20MoTi is highlighted; hover a dot for its name, or open the interactive family chart.
Working with NiCo20Cr20MoTi
Is NiCo20Cr20MoTi easy to machine?
Machine in the solution-treated condition where possible: rigid setups, positive-rake carbide or ceramic tooling, low speed and heavy constant feed, flood coolant — work-hardens fast and burns tool edges like other γ′ superalloys.
Can NiCo20Cr20MoTi be welded?
One of the better-weldable γ′ alloys thanks to low Al+Ti — GTAW/EBW/laser with matching 263 or Haynes 263 filler in the solution-treated state, then post-weld solution treat and age; avoid welding in the aged condition.
Can NiCo20Cr20MoTi be formed, bent or molded?
Cold form sheet in the solution-treated condition with generous radii and interstage anneals at ~1150 °C/WQ; hot work 1180–1000 °C, always re-solution treat before ageing.
NiCo20Cr20MoTi 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 |
|---|---|---|
| Co | 19 – 21 | 20 |
| Cr | 19 – 21 | 20 |
| Mo | 5.6 – 6.1 | 5.9 |
| TiAl+Ti held to 2.4–2.8 % for weldability | 1.9 – 2.4 | 2.1 |
| Al | 0.3 – 0.6 | 0.45 |
| C | 0.04 – 0.08 | 0.06 |
| Fe | ≤ 0.7 | 0.3 |
| Mn | ≤ 0.6 | 0.2 |
| Si | ≤ 0.4 | 0.15 |
| Cu | ≤ 0.2 | — |
| B | ≤ 0.01 | — |
| S | ≤ 0.01 | — |
| Ag | ≤ 5×10⁻⁴ | — |
| Pb | ≤ 0 | — |
| Bi | ≤ 1×10⁻⁴ | — |
| Nibalance, typically ~49–52 % | balance | — |
What surface finishes work on NiCo20Cr20MoTi?
Pickle/blast the tenacious Cr-Co oxide after heat treatment; not anodisable — electropolish, passivate, or apply aluminide/MCrAlY and thermal-barrier coatings for hot-section service.
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 NiCo20Cr20MoTi in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 2.4650
How much does NiCo20Cr20MoTi cost?
NiCo20Cr20MoTi 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.
NiCo20Cr20MoTi — frequently asked
What is NiCo20Cr20MoTi used for?
NiCo20Cr20MoTi is typically used for turbine discs, high-temperature fasteners and gas turbine hot-section components. In short: weldable γ′ superalloy; creep strength to 800 °C; sheet-fabrication friendly.
What is the yield strength of NiCo20Cr20MoTi?
NiCo20Cr20MoTi has a typical yield strength of 540 MPa (78.3 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 78% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is NiCo20Cr20MoTi easy to machine?
Not especially — machinability is rated poor (20/100, better than 53% of nickel alloy grades). Machine in the solution-treated condition where possible: rigid setups, positive-rake carbide or ceramic tooling, low speed and heavy constant feed, flood coolant — work-hardens fast and burns tool edges like other γ′ superalloys.
Can NiCo20Cr20MoTi be welded?
Yes — weldability is rated very good (75/100). One of the better-weldable γ′ alloys thanks to low Al+Ti — GTAW/EBW/laser with matching 263 or Haynes 263 filler in the solution-treated state, then post-weld solution treat and age; avoid welding in the aged condition.
What surface finishes work on NiCo20Cr20MoTi?
Pickle/blast the tenacious Cr-Co oxide after heat treatment; not anodisable — electropolish, passivate, or apply aluminide/MCrAlY and thermal-barrier coatings for hot-section service.
Can NiCo20Cr20MoTi be formed, bent or molded?
Cold form sheet in the solution-treated condition with generous radii and interstage anneals at ~1150 °C/WQ; hot work 1180–1000 °C, always re-solution treat before ageing.
What is the maximum service temperature of NiCo20Cr20MoTi?
NiCo20Cr20MoTi is rated for continuous use to about 800°C (1,472 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between NiCo20Cr20MoTi-ST and NiCo20Cr20MoTi-CD?
ST is the default condition — standard as-supplied sheet, plate, bar and ring condition: softest and most formable/weldable, aged after fabrication. CD: cold-worked small bar, wire and strip where higher as-supplied strength and close tolerance are wanted; anneal before heavy forming. Yield strength is 540 MPa in ST versus 800 MPa in CD.
How much does NiCo20Cr20MoTi cost?
NiCo20Cr20MoTi 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
- Nimonic alloy 263 Technical Data — Special Metals Corporation (2004)
- HAYNES 263 alloy Product Brochure — Haynes International (2020)
- DIN 17742 / 17744 — Nickel wrought alloys with molybdenum and chromium (material no. 2.4650) — DIN (1993)
- AMS 5872 / AMS 5886 — Nickel alloy sheet, strip and bar, 20Co-20Cr-6Mo-2.1Ti — SAE International (2018)
- ASM Specialty Handbook: Heat-Resistant Materials — ASM International (1997)
- (GH4263/Nimonic 263) (2025)
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.