Nickel Alloy ERNiCrMo-2-AW (As-welded deposit)
Heat-treated state · default condition
UNS N06002 · also Hastelloy X Filler Wire
Default condition for qualification and most aerospace/turbine joints where no post-weld heat treatment is applied.
Values for the AW condition
Other ERNiCrMo-2 tempers and conditions
ERNiCrMo-2 is listed in 3 conditions; see the grade overview at ERNiCrMo-2.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As welded plus solution anneal | Best choice for maximum ductility and homogeneous, carbide-free weld structure before long-term high-temperature service or subsequent forming. | 360 | 760 | 43 | 180 HB | — |
As welded plus stress relief | Choose when residual stress must be lowered on thick or restrained welds; accept some carbide precipitation and slightly lower ductility. | 400 | 745 | 32 | 11 HRC | 1.5 % IACS |
AWDefaultThis page As-welded deposit | Default condition for qualification and most aerospace/turbine joints where no post-weld heat treatment is applied. | 430 | 730 | 36 | 13 HRC | 1.5 % IACS |
What is ERNiCrMo-2-AW?
ERNiCrMo-2-AW is ERNiCrMo-2 heat treated to AW — default condition for qualification and most aerospace/turbine joints where no post-weld heat treatment is applied. ERNiCrMo-2-AW has a yield strength of 430 MPa (62.4 ksi) and a tensile strength of 730 MPa (106 ksi) — stronger than 64% of nickel alloy grades. Elongation at break is 36% and the elastic modulus is 205 GPa (29.7 Msi). ERNiCrMo-2-AW has a density of 8.22 g/cm³ (0.297 lb/in³), lighter than 60% of nickel alloy grades. It melts at 1,260°C (2,300 °F).
Advantages
- High service temperature — 1,150°C (2,102 °F), better than 95% of nickel alloy grades
- Readily welded — 88/100, better than 92% of nickel alloy grades
- Tough — resists crack growth — 120 MPa·√m (109.2 ksi·√in), better than 75% of nickel alloy grades
Limitations
- Poor heat conductor — 9.1 W/m·K (5.26 BTU/hr·ft·°F), worse than 95% of nickel alloy grades
- Hard to polish — 60/100, worse than 84% of nickel alloy grades
ERNiCrMo-2-AW properties
Typical room-temperature values for ERNiCrMo-2-AW; 23 are specific to this condition. Other listed values are ERNiCrMo-2 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
ERNiCrMo-2-AW has a density of 8.22 g/cm³ (0.297 lb/in³), lighter than 60% of nickel alloy grades. It melts at 1,260°C (2,300 °F).
Mechanical17
ERNiCrMo-2-AW has a yield strength of 430 MPa (62.4 ksi) and a tensile strength of 730 MPa (106 ksi) — stronger than 64% of nickel alloy grades. Elongation at break is 36% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
ERNiCrMo-2-AW is rated for continuous service to 1,150°C (2,102 °F). It conducts heat at 9.1 W/m·K (5.26 BTU/hr·ft·°F), worse than 95% of nickel alloy grades. Thermal expansion is 13.9 µm/m·K (7.72 µin/in·°F).
Electrical3
ERNiCrMo-2-AW 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 ERNiCrMo-2-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 35%.
Manufacturability7
ERNiCrMo-2-AW's machinability is poor (25/100, better than 76% of nickel alloy grades); weldability excellent (88/100); formability good (55/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ERNiCrMo-2-AW
Is ERNiCrMo-2 easy to machine?
Weld deposits and the alloy generally machine like a tough austenitic superalloy: rigid setups, positive-rake carbide or ceramic tooling, low surface speed, heavy flood coolant and no dwelling to avoid work hardening.
Can ERNiCrMo-2 be welded?
GTAW/GMAW/PAW and laser hot-wire on Hastelloy X, 617, 625 and dissimilar Ni/stainless joints; keep interpass temperature low, use stringer beads and low heat input, argon or Ar-He shielding with full back purge to avoid microfissuring.
Can ERNiCrMo-2 be formed, bent or molded?
Supplied as cold-drawn wire; the deposited metal is highly ductile in solution-annealed condition but work-hardens quickly, so plan intermediate anneals for any cold forming of welded assemblies.
What surface finishes work on ERNiCrMo-2?
Pickle or blast to remove chromium-rich weld oxide before service or coating; not anodisable, but takes electropolishing, aluminide/diffusion coatings and thermal-barrier bond coats well.
ERNiCrMo-2 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 |
|---|---|---|
| C | 0.05 – 0.15 | 0.1 |
| Cr | 20.5 – 23 | 21.8 |
| Fe | 17 – 20 | 18.5 |
| Mo | 8 – 10 | 9 |
| Co | 0.5 – 2.5 | 1.5 |
| W | 0.2 – 1 | 0.6 |
| Mn | ≤ 1 | 0.5 |
| Si | ≤ 1 | 0.4 |
| Cu | ≤ 0.5 | — |
| P | ≤ 0.04 | — |
| S | ≤ 0.03 | — |
| Others (total)AWS residual limit | ≤ 0.5 | — |
| Niremainder, nominally ~47 % | balance | — |
ERNiCrMo-2-AW — frequently asked
What is ERNiCrMo-2-AW used for?
ERNiCrMo-2-AW is typically used for gas turbine combustor liners, aerospace furnace fixtures and high-temperature sheet metal fabrication. In short: matches Hastelloy X; rated to 1150 °C; oxidation-resistant weld metal.
What is the yield strength of ERNiCrMo-2-AW?
ERNiCrMo-2-AW has a typical yield strength of 430 MPa (62.4 ksi) and a tensile strength of 730 MPa (106 ksi) — stronger than 64% of nickel alloy grades. Strength varies by condition: see the 3 listed tempers.
Is ERNiCrMo-2-AW easy to machine?
Not especially — machinability is rated poor (25/100, better than 76% of nickel alloy grades). Weld deposits and the alloy generally machine like a tough austenitic superalloy: rigid setups, positive-rake carbide or ceramic tooling, low surface speed, heavy flood coolant and no dwelling to avoid work hardening.
Can ERNiCrMo-2-AW be welded?
Yes — weldability is rated excellent (88/100). GTAW/GMAW/PAW and laser hot-wire on Hastelloy X, 617, 625 and dissimilar Ni/stainless joints; keep interpass temperature low, use stringer beads and low heat input, argon or Ar-He shielding with full back purge to avoid microfissuring.
What surface finishes work on ERNiCrMo-2-AW?
Pickle or blast to remove chromium-rich weld oxide before service or coating; not anodisable, but takes electropolishing, aluminide/diffusion coatings and thermal-barrier bond coats well.
Can ERNiCrMo-2-AW be formed, bent or molded?
Supplied as cold-drawn wire; the deposited metal is highly ductile in solution-annealed condition but work-hardens quickly, so plan intermediate anneals for any cold forming of welded assemblies.
What is the maximum service temperature of ERNiCrMo-2-AW?
ERNiCrMo-2-AW is rated for continuous use to about 1,150°C (2,102 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ERNiCrMo-2-AW and ERNiCrMo-2 AW-SA?
AW is the default condition — default condition for qualification and most aerospace/turbine joints where no post-weld heat treatment is applied. AW-SA: best choice for maximum ductility and homogeneous, carbide-free weld structure before long-term high-temperature service or subsequent forming. Yield strength is 430 MPa in AW versus 360 MPa in AW-SA.
Sources
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods — AWS (2018)
- HASTELLOY X alloy technical data — Haynes International (2020)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
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.