Nickel Alloy N06250
UNS N06250
N06250 is a nickel-chromium alloy with a high molybdenum content, part of the Ni-Mo-Cr corrosion-alloy family and supplied in solution-annealed (SA), cold-drawn (CD), CD-SA and as-welded (AW) conditions.
Reference datasheet — N06250 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
N06250 tempers and conditions
N06250 is supplied in 4 conditions, soft to hard. SA is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Cold Drawn then Solution Annealed (bright annealed tube/bar) | Preferred for seamless tubing and precision bar that must keep full corrosion resistance after cold sizing. | 355 | 750 | 55 | 178 HB | 1.4 % IACS |
SADefault Solution Annealed | Standard supply condition for plate, sheet, rod and pipe — maximum corrosion resistance and ductility. | 360 | 760 | 58 | 9 HRC | 1.4 % IACS |
As-welded deposit | Property set for all-weld-metal / weld overlay; normally used without PWHT provided heat input and interpass temperature are controlled. | 450 | 740 | 40 | 195 HB | 1.4 % IACS |
Cold drawn | Pick when higher strength and tighter tolerance/straightness are needed and the final part is not exposed to severe crevice service without a subsequent anneal. | 700 | 950 | 25 | 30 HRC | 1.4 % IACS |
What is N06250?
N06250 is a nickel-chromium alloy with a high molybdenum content, part of the Ni-Mo-Cr corrosion-alloy family and supplied in solution-annealed (SA), cold-drawn (CD), CD-SA and as-welded (AW) conditions. Engineers select it for severe corrosive service, in particular hot contaminated acids and localized pitting or crevice attack, normally as plate, sheet, pipe, bar and welded fabrications. Annealed properties are 360 MPa yield, 760 MPa tensile, 58% elongation and 88 HRB, with a maximum service temperature of 650 °C. Machinability is low (score 18) and cost is high, so C-276 or alloy 22 is the usual alternative where the extra molybdenum is not required. N06250 has a density of 8.7 g/cm³ (0.314 lb/in³), heavier than 75% of nickel alloy grades. It melts at 1,325°C (2,417 °F). N06250 has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 760 MPa (110 ksi) — weaker than 57% of nickel alloy grades. Elongation at break is 58% and the elastic modulus is 206 GPa (29.9 Msi).
What is N06250 used for?
- chemical processing vessels
- scrubber systems
- acid piping
- industrial heat exchangers
Advantages
- Ductile — tolerates forming and impact — 58%, better than 96% of nickel alloy grades
- Good corrosion resistance — 92/100, better than 91% of nickel alloy grades
- Readily welded — 85/100, better than 83% of nickel alloy grades
N06250 properties
Typical room-temperature values for N06250-SA; bars are the position among nickel alloy grades.
Physical3
N06250 has a density of 8.7 g/cm³ (0.314 lb/in³), heavier than 75% of nickel alloy grades. It melts at 1,325°C (2,417 °F).
Mechanical16
N06250 has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 760 MPa (110 ksi) — weaker than 57% of nickel alloy grades. Elongation at break is 58% and the elastic modulus is 206 GPa (29.9 Msi).
Thermal5
N06250 is rated for continuous service to 650°C (1,202 °F). It conducts heat at 10 W/m·K (5.78 BTU/hr·ft·°F), worse than 88% of nickel alloy grades. Thermal expansion is 11.6 µm/m·K (6.44 µin/in·°F).
Electrical3
N06250 conducts electricity at 1.4 % IACS, worse than 65% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 91% of nickel alloy grades.
Sustainability4
Producing a kilogram of N06250 takes about 180 MJ of energy and emits 14 kg of CO₂ — more than 69% of nickel alloy grades. Typical recycled content is 45%.
Manufacturability8
N06250's machinability is poor (18/100, worse than 61% of nickel alloy grades); weldability excellent (85/100); 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. N06250 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with N06250
Is N06250 easy to machine?
Slow, rigid and positive: low surface speed, heavy feed to cut under the work-hardened skin, sharp carbide or ceramic tooling, flood coolant, avoid dwelling.
Can N06250 be welded?
GTAW/GMAW/SMAW with matching Ni-Cr-Mo filler; keep heat input and interpass temperature low (<100–150 °C), no preheat, no PWHT normally required, clean to bare metal before welding.
Can N06250 be formed, bent or molded?
Very ductile but work-hardens rapidly — form cold with generous radii and extra power, interstage anneal at ~1120 °C with rapid quench for severe draws; hot work 900–1200 °C.
N06250 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 |
|---|---|---|
| Crnominal for the Ni-Cr-Mo C-family; confirm registered limits for this UNS number | 19 – 23 | 21 |
| Mohigh-Mo content giving reducing-acid and crevice resistance; confirm registered limits | 15 – 19 | 17 |
| Feresidual | ≤ 3 | 1.5 |
| Clow-carbon melt practice typical of this family | ≤ 0.02 | 0.01 |
| Si | ≤ 0.08 | 0.04 |
| Mn | ≤ 0.5 | 0.2 |
| P | ≤ 0.03 | |
| S | ≤ 0.01 | |
| Nibalance, approx. 55–62 % | balance |
What surface finishes work on N06250?
Not anodizable; descale by grit blast plus nitric-hydrofluoric pickling, then passivate or electropolish for maximum crevice-corrosion performance.
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
How much does N06250 cost?
N06250 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.
N06250 — frequently asked
What is N06250 used for?
N06250 is typically used for chemical processing vessels, scrubber systems, acid piping and industrial heat exchangers. In short: high-Mo severe acid alloy; pitting and crevice resistant; weldable but hard to machine.
What is the yield strength of N06250?
N06250 has a typical yield strength of 360 MPa (52.2 ksi) and a tensile strength of 760 MPa (110 ksi) — weaker than 57% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is N06250 easy to machine?
Not especially — machinability is rated poor (18/100, worse than 61% of nickel alloy grades). Slow, rigid and positive: low surface speed, heavy feed to cut under the work-hardened skin, sharp carbide or ceramic tooling, flood coolant, avoid dwelling.
Can N06250 be welded?
Yes — weldability is rated excellent (85/100). GTAW/GMAW/SMAW with matching Ni-Cr-Mo filler; keep heat input and interpass temperature low (<100–150 °C), no preheat, no PWHT normally required, clean to bare metal before welding.
What surface finishes work on N06250?
Not anodizable; descale by grit blast plus nitric-hydrofluoric pickling, then passivate or electropolish for maximum crevice-corrosion performance.
Can N06250 be formed, bent or molded?
Very ductile but work-hardens rapidly — form cold with generous radii and extra power, interstage anneal at ~1120 °C with rapid quench for severe draws; hot work 900–1200 °C.
What is the maximum service temperature of N06250?
N06250 is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between N06250-SA and N06250-CD?
SA is the default condition — standard supply condition for plate, sheet, rod and pipe — maximum corrosion resistance and ductility. CD: pick when higher strength and tighter tolerance/straightness are needed and the final part is not exposed to severe crevice service without a subsequent anneal. Yield strength is 360 MPa in SA versus 700 MPa in CD.
How much does N06250 cost?
N06250 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
- ASTM B575 — Ni-Cr-Mo Alloy Plate, Sheet and Strip — ASTM International (2022)
- ASTM B574 / B622 / B619 — Ni-Cr-Mo Alloy Rod, Seamless Pipe and Welded Pipe — ASTM International (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Specialty Handbook: Nickel, Cobalt and Their Alloys — ASM International (2000)
- Ni-Cr-Mo corrosion alloy datasheets (Alloy 22 / C-276 / C-2000 class) used as property analogues — Haynes International / VDM Metals (2023)
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.