Nickel Alloy NiCr26MoW-AW (As-welded deposit)
Heat-treated state
EN 2.4608
Property set for fabricated joints welded with matching or over-alloyed Ni-Cr-Mo consumables and left in the as-welded condition.
Values for the AW condition
Other NiCr26MoW tempers and conditions
NiCr26MoW is listed in 5 conditions; see the grade overview at NiCr26MoW.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot finished (hot rolled/forged) and annealed, descaled | Heavy plate, forged rings and large bar where hot working is followed by a full anneal; slightly coarser grain and lower strength than cold-finished product. | 320 | 700 | 45 | 170 HB | 1.5 % IACS |
SADefault Solution annealed | Standard delivery condition for sheet, plate, bar and tube; best ductility, corrosion resistance and high-temperature stability. | 350 | 730 | 45 | 180 HB | — |
Cold drawn and solution annealed bar/tube | Close-tolerance bar and tube with fine grain and good surface, annealed after drawing for maximum ductility. | 380 | 760 | 42 | 190 HB | 1.5 % IACS |
AWThis page As-welded deposit | Property set for fabricated joints welded with matching or over-alloyed Ni-Cr-Mo consumables and left in the as-welded condition. | 400 | 700 | 32 | 200 HB | 1.4 % IACS |
Cold worked | Use where higher room-temperature strength or spring temper is needed; not for service above ~600 °C, where recrystallisation removes the cold-work benefit. | 800 | 1,000 | 12 | 30 HRC | 1.5 % IACS |
What is NiCr26MoW-AW?
NiCr26MoW-AW is NiCr26MoW heat treated to AW — property set for fabricated joints welded with matching or over-alloyed Ni-Cr-Mo consumables and left in the as-welded condition. NiCr26MoW-AW has a yield strength of 400 MPa (58 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 56% of nickel alloy grades. Elongation at break is 32% and the elastic modulus is 208 GPa (30.2 Msi). NiCr26MoW-AW has a density of 8.5 g/cm³ (0.307 lb/in³), heavier than 64% of nickel alloy grades. It melts at 1,340°C (2,444 °F). SA is the default condition FabDigit quotes; AW is available on request or by drawing note.
Advantages
- High service temperature — 1,100°C (2,012 °F), better than 88% of nickel alloy grades
NiCr26MoW-AW properties
Typical room-temperature values for NiCr26MoW-AW; 22 are specific to this condition. Other listed values are NiCr26MoW reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
NiCr26MoW-AW has a density of 8.5 g/cm³ (0.307 lb/in³), heavier than 64% of nickel alloy grades. It melts at 1,340°C (2,444 °F).
Mechanical15
NiCr26MoW-AW has a yield strength of 400 MPa (58 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 56% of nickel alloy grades. Elongation at break is 32% and the elastic modulus is 208 GPa (30.2 Msi).
Thermal6
NiCr26MoW-AW is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 10.5 W/m·K (6.07 BTU/hr·ft·°F), worse than 73% of nickel alloy grades. Thermal expansion is 13.5 µm/m·K (7.5 µin/in·°F).
Electrical3
NiCr26MoW-AW conducts electricity at 1.4 % IACS, worse than 65% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (80/100), better than 61% of nickel alloy grades.
Sustainability4
Producing a kilogram of NiCr26MoW-AW takes about 155 MJ of energy and emits 12.5 kg of CO₂ — less than 58% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability8
NiCr26MoW-AW's machinability is poor (20/100, better than 53% of nickel alloy grades); weldability good (65/100); formability fair (45/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with NiCr26MoW-AW
Is NiCr26MoW easy to machine?
Machine like alloy 600/625: rigid setup, sharp positive-rake carbide, low surface speed (20–35 m/min), heavy constant feed to cut below the work-hardened layer, and flood coolant.
Can NiCr26MoW be welded?
Readily GTAW/GMAW/SMAW welded with matching or over-alloyed Ni-Cr-Mo filler; keep interpass below ~150 °C, low heat input, no preheat and no PWHT normally required, clean surfaces free of sulphur and grease.
Can NiCr26MoW be formed, bent or molded?
Cold forms well but with high loads and rapid work hardening — allow interstage anneals at 1080–1150 °C with rapid cooling; hot work in the 1150–950 °C range.
What surface finishes work on NiCr26MoW?
Pickle or grit-blast plus passivate after hot work/welding to restore the chromium oxide film; not anodisable, and any protective coatings must tolerate the intended furnace temperature.
NiCr26MoW 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 |
|---|---|---|
| Crhigh Cr for Cr2O3 scale formation | 24 – 27 | 26 |
| Mosolid-solution strengthening, pitting resistance | 1 – 2.5 | 1.8 |
| Whigh-temperature solid-solution strengthening | 1 – 2.5 | 1.8 |
| Feresidual | ≤ 3 | 1 |
| C | ≤ 0.1 | 0.06 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 1 | 0.4 |
| P | ≤ 0.02 | — |
| S | ≤ 0.02 | — |
| Nibalance, typically 65–72 % | balance | — |
NiCr26MoW-AW — frequently asked
What is NiCr26MoW-AW used for?
NiCr26MoW-AW is typically used for furnace muffles, radiant tubes, heat-treatment fixtures and industrial burner components. In short: service to 1150 °C; high-chromium furnace alloy; solid-solution, no ageing needed.
What is the yield strength of NiCr26MoW-AW?
NiCr26MoW-AW has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 56% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is NiCr26MoW-AW easy to machine?
Not especially — machinability is rated poor (20/100, better than 53% of nickel alloy grades). Machine like alloy 600/625: rigid setup, sharp positive-rake carbide, low surface speed (20–35 m/min), heavy constant feed to cut below the work-hardened layer, and flood coolant.
Can NiCr26MoW-AW be welded?
Yes — weldability is rated good (65/100). Readily GTAW/GMAW/SMAW welded with matching or over-alloyed Ni-Cr-Mo filler; keep interpass below ~150 °C, low heat input, no preheat and no PWHT normally required, clean surfaces free of sulphur and grease.
What surface finishes work on NiCr26MoW-AW?
Pickle or grit-blast plus passivate after hot work/welding to restore the chromium oxide film; not anodisable, and any protective coatings must tolerate the intended furnace temperature.
Can NiCr26MoW-AW be formed, bent or molded?
Cold forms well but with high loads and rapid work hardening — allow interstage anneals at 1080–1150 °C with rapid cooling; hot work in the 1150–950 °C range.
What is the maximum service temperature of NiCr26MoW-AW?
NiCr26MoW-AW 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 NiCr26MoW-SA and NiCr26MoW-CW?
SA is the default condition — standard delivery condition for sheet, plate, bar and tube; best ductility, corrosion resistance and high-temperature stability. CW: use where higher room-temperature strength or spring temper is needed; not for service above ~600 °C, where recrystallisation removes the cold-work benefit. Yield strength is 350 MPa in SA versus 800 MPa in CW.
Sources
- DIN 17744 — Wrought nickel alloys with molybdenum and chromium — DIN (2002)
- DIN EN 10095 — Heat resisting steels and nickel alloys — CEN (1999)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- High-chromium Ni-Cr-Mo furnace alloy datasheets (VDM Metals / Böhler / Sandvik product data) — various producers (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.