Nickel Alloy CX2MW
UNS N26022, N06022 · ASTM A494 CX2MW
CX2MW is the cast equivalent of Hastelloy C-22, a Ni-Cr-Mo alloy with tungsten supplied to ASTM A494 (UNS N26022) and matching wrought N06022.
Reference datasheet — CX2MW 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
CX2MW tempers and conditions
CX2MW 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 |
|---|---|---|---|---|---|---|
Spheroidize annealed | Only for non-critical or non-corrosive structural parts: interdendritic carbide/μ-phase network lowers ductility and localized-corrosion resistance. | 330 | 550 | 22 | 18 HRC | 1.5 % IACS |
SADefault Solution annealed and rapidly quenched | Standard supply condition for all corrosion-service castings: solution anneal ≈1120–1180 °C then water quench to dissolve carbides/μ-phase. | 335 | 620 | 45 | 200 HB | — |
Weld-repaired casting, solution annealed after repair | Typical condition for foundry weld-repaired valve/pump bodies; matching ERNiCrMo-10 filler plus post-repair solution anneal restores base-metal properties. | 335 | 600 | 38 | 205 HB | 1.5 % IACS |
hot isostatically pressed then solution annealed | Choose for thick-wall pressure parts or investment castings needing closed porosity, best ductility/toughness and radiographic soundness. | 345 | 645 | 50 | 200 HB | 1.5 % IACS |
What is CX2MW?
CX2MW is the cast equivalent of Hastelloy C-22, a Ni-Cr-Mo alloy with tungsten supplied to ASTM A494 (UNS N26022) and matching wrought N06022. Engineers choose it for sand and investment cast pump housings, valve bodies and piping fittings exposed to mixed oxidizing and reducing acids, where it resists pitting, crevice attack and stress-corrosion cracking. Solution-annealed properties are 335 MPa yield, 620 MPa tensile, 45 % elongation and about 200 HB (90 HRB), with service to 675 °C. Cost, foundry lead time and a machinability rating of 15 are the practical limits; CX2M (cast Alloy 59) is the nearest alternative for chloride-dominated service. CX2MW has a density of 8.69 g/cm³ (0.314 lb/in³), heavier than 72% of nickel alloy grades. It melts at 1,357°C (2,475 °F). CX2MW has a yield strength of 335 MPa (48.6 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 65% of nickel alloy grades. Elongation at break is 45% and the elastic modulus is 200 GPa (29 Msi).
What is CX2MW used for?
- scrubber pump housings
- waste incineration valves
- chemical process piping fittings
Advantages
- Good corrosion resistance — 92/100, better than 91% of nickel alloy grades
CX2MW properties
Typical room-temperature values for CX2MW-SA; bars are the position among nickel alloy grades.
Physical3
CX2MW has a density of 8.69 g/cm³ (0.314 lb/in³), heavier than 72% of nickel alloy grades. It melts at 1,357°C (2,475 °F).
Mechanical13
CX2MW has a yield strength of 335 MPa (48.6 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 65% of nickel alloy grades. Elongation at break is 45% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
CX2MW is rated for continuous service to 675°C (1,247 °F). It conducts heat at 10.1 W/m·K (5.84 BTU/hr·ft·°F), worse than 84% of nickel alloy grades. Thermal expansion is 12.4 µm/m·K (6.89 µin/in·°F).
Electrical3
CX2MW conducts electricity at 1.5 % IACS, better than 59% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 91% of nickel alloy grades.
Sustainability4
Producing a kilogram of CX2MW takes about 145 MJ of energy and emits 12.5 kg of CO₂ — less than 77% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability7
CX2MW's machinability is poor (15/100, worse than 76% of nickel alloy grades); weldability very good (75/100).
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. CX2MW is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CX2MW
Is CX2MW easy to machine?
Low speed, heavy positive-rake carbide or ceramic tooling, rigid setups and flood coolant; the alloy work-hardens fast so avoid dwell and keep a constant, generous feed.
Can CX2MW be welded?
Readily GTAW/GMAW welded with matching ERNiCrMo-10 (AWS A5.14) filler, low heat input, no preheat and interpass <150 °C; solution anneal after major weld repair for best corrosion performance.
Can CX2MW be formed, bent or molded?
Sand or investment cast with tight Si/C control and generous risering; the alloy is hot-tear and shrinkage sensitive, and every casting needs 1120–1180 °C solution anneal with rapid quench.
CX2MW 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 |
|---|---|---|
| Cextra-low carbon for as-welded corrosion resistance | ≤ 0.02 | 0.01 |
| Mn | ≤ 1 | 0.5 |
| Sitight Si limit vs. older cast C alloys | ≤ 0.08 | 0.05 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Cr | 20 – 22.5 | 21 |
| Mo | 12.5 – 14.5 | 13.5 |
| W | 2.5 – 3.5 | 3 |
| Fe | 2 – 6 | 4 |
| Co | ≤ 2.5 | 1 |
| V | ≤ 0.35 | 0.1 |
| Nibalance, typically 54–58 % | balance |
What surface finishes work on CX2MW?
Grind/blast to remove oxidized cast skin, then pickle-passivate or electropolish; not anodizable, and no plating is normally required since the alloy is inherently passive.
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 CX2MW in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- N26022N06022
- ASTM
- A494 CX2MW
How much does CX2MW cost?
CX2MW 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.
CX2MW — frequently asked
What is CX2MW used for?
CX2MW is typically used for scrubber pump housings, waste incineration valves and chemical process piping fittings. In short: cast Hastelloy C-22 equivalent; widest mixed-acid corrosion range; 675 °C service ceiling.
What is the yield strength of CX2MW?
CX2MW has a typical yield strength of 335 MPa (48.6 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 65% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is CX2MW easy to machine?
Not especially — machinability is rated poor (15/100, worse than 76% of nickel alloy grades). Low speed, heavy positive-rake carbide or ceramic tooling, rigid setups and flood coolant; the alloy work-hardens fast so avoid dwell and keep a constant, generous feed.
Can CX2MW be welded?
Yes — weldability is rated very good (75/100). Readily GTAW/GMAW welded with matching ERNiCrMo-10 (AWS A5.14) filler, low heat input, no preheat and interpass <150 °C; solution anneal after major weld repair for best corrosion performance.
What surface finishes work on CX2MW?
Grind/blast to remove oxidized cast skin, then pickle-passivate or electropolish; not anodizable, and no plating is normally required since the alloy is inherently passive.
Can CX2MW be formed, bent or molded?
Sand or investment cast with tight Si/C control and generous risering; the alloy is hot-tear and shrinkage sensitive, and every casting needs 1120–1180 °C solution anneal with rapid quench.
What is the maximum service temperature of CX2MW?
CX2MW is rated for continuous use to about 675°C (1,247 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CX2MW-SA and CX2MW-AC?
SA is the default condition — standard supply condition for all corrosion-service castings: solution anneal ≈1120–1180 °C then water quench to dissolve carbides/μ-phase. AC: only for non-critical or non-corrosive structural parts: interdendritic carbide/μ-phase network lowers ductility and localized-corrosion resistance. Yield strength is 335 MPa in SA versus 330 MPa in AC.
How much does CX2MW cost?
CX2MW 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 A494/A494M — Castings, Nickel and Nickel Alloy (grade CX2MW) — ASTM International (2023)
- HASTELLOY C-22 alloy technical data (H-2019) — Haynes International (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol. 15 — Casting (nickel-alloy castings) — ASM International (2008)
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods (ERNiCrMo-10) — AWS (2018)
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.