Nickel Alloy ERNiFeCr-2
also Inconel Filler Metal 52M, Filler Metal 718
ERNiFeCr-2 is a nickel-iron-chromium filler wire (UNS N06054, AWS A5.14 family) formulated for improved resistance to ductility-dip and hot cracking, used for critical dissimilar-metal welds in nuclear primary systems and for welding Alloy 690.
Reference datasheet — ERNiFeCr-2 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 AW condition
ERNiFeCr-2 tempers and conditions
ERNiFeCr-2 is supplied in 5 conditions, soft to hard. AW 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 |
|---|---|---|---|---|---|---|
Solution annealed weld metal | Pick when the joint must be homogenised (Laves dissolution) and kept soft/ductile for later forming, re-welding or corrosion service rather than for strength. | 450 | 850 | 35 | 210 HB | 1.4 % IACS |
AWDefault As-welded deposit | Default condition for procedure qualification and repairs where no post-weld heat treatment is possible; moderate strength, best ductility and toughness. | 550 | 830 | 25 | 24 HRC | — |
Direct aged | Use when a solution treatment would coarsen or distort the assembly: gives most of the strength of a full STA cycle straight from the as-welded condition. | 950 | 1,170 | 15 | 40 HRC | — |
High-temperature solution 1065 °C + double age | Choose for creep/rupture-dominated or heavy-section service where coarser grain and better stress-rupture life matter more than room-temperature strength. | 960 | 1,180 | 15 | 39 HRC | 1.4 % IACS |
Solution treated and aged | Standard aerospace PWHT (AMS 5662/5663-type) when the weld must match aged Alloy 718 base metal strength. | 1,030 | 1,240 | 12 | 42 HRC | — |
What is ERNiFeCr-2?
ERNiFeCr-2 is a nickel-iron-chromium filler wire (UNS N06054, AWS A5.14 family) formulated for improved resistance to ductility-dip and hot cracking, used for critical dissimilar-metal welds in nuclear primary systems and for welding Alloy 690. It is supplied as drawn wire and cut rod and is available as-welded, solution-annealed, aged and solution-treated-and-aged; aged deposits reach about 550 MPa yield, 830 MPa tensile, 25 % elongation and 24 HRC. Service is limited to 600 °C, as-aged ductility is low and machinability is poor (score 30); ERNiCrMo-3 (Alloy 625 filler) is the usual alternative when age hardening is not needed. ERNiFeCr-2 has a density of 8.19 g/cm³ (0.296 lb/in³), lighter than 68% of nickel alloy grades. It melts at 1,260°C (2,300 °F). ERNiFeCr-2 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 830 MPa (120 ksi) — stronger than 79% of nickel alloy grades. Elongation at break is 25% and the elastic modulus is 200 GPa (29 Msi).
What is ERNiFeCr-2 used for?
- nuclear reactor pressure vessel penetrations
- Alloy 690 dissimilar metal welds
- steam generator nozzle welds
Advantages
- Easy to machine — 30/100, better than 90% of nickel alloy grades
- High strength — 550 MPa (79.8 ksi), better than 79% of nickel alloy grades
ERNiFeCr-2 properties
Typical room-temperature values for ERNiFeCr-2-AW; bars are the position among nickel alloy grades.
Physical3
ERNiFeCr-2 has a density of 8.19 g/cm³ (0.296 lb/in³), lighter than 68% of nickel alloy grades. It melts at 1,260°C (2,300 °F).
Mechanical14
ERNiFeCr-2 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 830 MPa (120 ksi) — stronger than 79% of nickel alloy grades. Elongation at break is 25% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
ERNiFeCr-2 is rated for continuous service to 600°C (1,112 °F). It conducts heat at 11.4 W/m·K (6.59 BTU/hr·ft·°F), better than 53% of nickel alloy grades. Thermal expansion is 13 µm/m·K (7.22 µin/in·°F).
Electrical3
ERNiFeCr-2 conducts electricity at 1.4 % IACS, worse than 78% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), worse than 71% of nickel alloy grades.
Sustainability4
Producing a kilogram of ERNiFeCr-2 takes about 165 MJ of energy and emits 12 kg of CO₂ — more than 54% of nickel alloy grades. Typical recycled content is 30%.
Manufacturability7
ERNiFeCr-2's machinability is poor (30/100, better than 90% of nickel alloy grades); weldability good (60/100); formability fair (45/100).
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. ERNiFeCr-2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ERNiFeCr-2
Is ERNiFeCr-2 easy to machine?
Aged weld metal machines like Alloy 718 — low speed, heavy positive-rake carbide or ceramic tooling, rigid setups and flood coolant; work hardens fast, so avoid dwelling.
Can ERNiFeCr-2 be welded?
Use GTAW/GMAW with argon (or Ar-He) shielding, low heat input and interpass ≤150 °C to limit Laves segregation; keep restraint low and consider a homogenising solution treatment before ageing to avoid strain-age/liquation cracking.
Can ERNiFeCr-2 be formed, bent or molded?
Supplied as drawn wire or cut rod; heavy cold forming of the deposit is impractical because of high work-hardening rate and low as-aged ductility.
ERNiFeCr-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 | ≤ 0.08 | 0.04 |
| Mn | ≤ 0.35 | 0.1 |
| Si | ≤ 0.35 | 0.1 |
| P | ≤ 0.02 | |
| S | ≤ 0.02 | |
| NiNi+Co | 50 – 55 | 53 |
| Cr | 17 – 21 | 19 |
| Mo | 2.8 – 3.3 | 3 |
| NbNb+Ta | 4.75 – 5.5 | 5.1 |
| Ti | 0.65 – 1.15 | 0.9 |
| Al | 0.2 – 0.8 | 0.5 |
| Co | ≤ 1 | |
| Cu | ≤ 0.3 | |
| B | ≤ 0.01 | 0 |
| Others (total) | ≤ 0.5 | |
| Febalance, typically 17–20 % | balance |
What surface finishes work on ERNiFeCr-2?
Grind or pickle to remove weld oxide before ageing; not anodizable — passivation, electropolishing or Ni/Cr plating for surface protection.
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 ERNiFeCr-2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- Inconel Filler Metal 52MFiller Metal 718
- Also called
- AWS A5.14 ERNiFeCr-2
- Similar grades
- N06054
How much does ERNiFeCr-2 cost?
ERNiFeCr-2 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.
ERNiFeCr-2 — frequently asked
What is ERNiFeCr-2 used for?
ERNiFeCr-2 is typically used for nuclear reactor pressure vessel penetrations, alloy 690 dissimilar metal welds and steam generator nozzle welds. In short: ductility-dip resistant filler; nuclear dissimilar-weld grade; age-hardenable weld metal.
What is the yield strength of ERNiFeCr-2?
ERNiFeCr-2 has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 830 MPa (120 ksi) — stronger than 79% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is ERNiFeCr-2 easy to machine?
Not especially — machinability is rated poor (30/100, better than 90% of nickel alloy grades). Aged weld metal machines like Alloy 718 — low speed, heavy positive-rake carbide or ceramic tooling, rigid setups and flood coolant; work hardens fast, so avoid dwelling.
Can ERNiFeCr-2 be welded?
Yes — weldability is rated good (60/100). Use GTAW/GMAW with argon (or Ar-He) shielding, low heat input and interpass ≤150 °C to limit Laves segregation; keep restraint low and consider a homogenising solution treatment before ageing to avoid strain-age/liquation cracking.
What surface finishes work on ERNiFeCr-2?
Grind or pickle to remove weld oxide before ageing; not anodizable — passivation, electropolishing or Ni/Cr plating for surface protection.
Can ERNiFeCr-2 be formed, bent or molded?
Supplied as drawn wire or cut rod; heavy cold forming of the deposit is impractical because of high work-hardening rate and low as-aged ductility.
What is the maximum service temperature of ERNiFeCr-2?
ERNiFeCr-2 is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ERNiFeCr-2-AW and ERNiFeCr-2-STA?
AW is the default condition — default condition for procedure qualification and repairs where no post-weld heat treatment is possible; moderate strength, best ductility and toughness. STA: standard aerospace PWHT (AMS 5662/5663-type) when the weld must match aged Alloy 718 base metal strength. Yield strength is 550 MPa in AW versus 1,030 MPa in STA.
How much does ERNiFeCr-2 cost?
ERNiFeCr-2 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
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods (ERNiFeCr-2, UNS N07718) — American Welding Society (2018)
- AMS 5832 — Nickel Alloy Welding Wire 52.5Ni-19Cr-3.0Mo-5.1Cb-0.90Ti-0.50Al-18Fe — SAE International (2021)
- INCONEL alloy 718 / INCONEL Filler Metal 718 technical bulletin — Special Metals Corporation (2007)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (Alloy 718) — ASM International (1990)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering (welding of precipitation-hardened Ni alloys) — ASM International (1993)
- MMPDS — Metallic Materials Properties Development and Standardization, alloy 718 chapter — Battelle/FAA (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.