Nickel Alloy ERNiCrMo-14-AW (As-welded deposit)
Heat-treated state · default condition
UNS N06686 · ISO S Ni 6686 · also Hastelloy C22HS Filler Wire
Standard condition for pressure-equipment joints: deposit used in the as-welded state with no post-weld heat treatment.
Values for the AW condition
Other ERNiCrMo-14 tempers and conditions
ERNiCrMo-14 is listed in 2 conditions; see the grade overview at ERNiCrMo-14.
- SA
- AW
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed deposit / PWHT ≈1120 °C + rapid quench | Choose when the fabricated part is solution annealed after welding to homogenise segregation and restore maximum corrosion resistance and ductility. | 400 | 760 | 55 | 175 HB | 1.4 % IACS |
AWDefaultThis page As-welded deposit | Standard condition for pressure-equipment joints: deposit used in the as-welded state with no post-weld heat treatment. | 500 | 800 | 45 | 14 HRC | 1.4 % IACS |
What is ERNiCrMo-14-AW?
ERNiCrMo-14-AW is ERNiCrMo-14 heat treated to AW — standard condition for pressure-equipment joints: deposit used in the as-welded state with no post-weld heat treatment. ERNiCrMo-14-AW has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 800 MPa (116 ksi) — stronger than 73% of nickel alloy grades. Elongation at break is 45% and the elastic modulus is 207 GPa (30 Msi). ERNiCrMo-14-AW has a density of 8.73 g/cm³ (0.315 lb/in³), heavier than 77% of nickel alloy grades. It melts at 1,338°C (2,440 °F).
Advantages
- Good corrosion resistance — 96/100, better than 99% of nickel alloy grades
- Readily welded — 92/100, better than 98% 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 W/m·K (5.2 BTU/hr·ft·°F), worse than 97% of nickel alloy grades
ERNiCrMo-14-AW properties
Typical room-temperature values for ERNiCrMo-14-AW; 23 are specific to this condition. Other listed values are ERNiCrMo-14 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
ERNiCrMo-14-AW has a density of 8.73 g/cm³ (0.315 lb/in³), heavier than 77% of nickel alloy grades. It melts at 1,338°C (2,440 °F).
Mechanical17
ERNiCrMo-14-AW has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 800 MPa (116 ksi) — stronger than 73% of nickel alloy grades. Elongation at break is 45% and the elastic modulus is 207 GPa (30 Msi).
Thermal5
ERNiCrMo-14-AW is rated for continuous service to 650°C (1,202 °F). It conducts heat at 9 W/m·K (5.2 BTU/hr·ft·°F), worse than 97% of nickel alloy grades. Thermal expansion is 12.2 µm/m·K (6.78 µin/in·°F).
Electrical3
ERNiCrMo-14-AW conducts electricity at 1.4 % IACS, worse than 65% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (96/100), better than 99% of nickel alloy grades.
Sustainability4
Producing a kilogram of ERNiCrMo-14-AW takes about 185 MJ of energy and emits 14 kg of CO₂ — more than 73% of nickel alloy grades. Typical recycled content is 30%.
Manufacturability7
ERNiCrMo-14-AW's machinability is poor (15/100, worse than 76% of nickel alloy grades); weldability excellent (92/100); formability good (60/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ERNiCrMo-14-AW
Is ERNiCrMo-14 easy to machine?
Weld deposits machine like C-276: rigid setups, positive-rake carbide, low speed (~15–25 m/min) with heavy feed and flood coolant to avoid work hardening.
Can ERNiCrMo-14 be welded?
GTAW/GMAW/PAW with 100 % Ar (or Ar+He) shielding and back purge; keep heat input ≤ 1.5 kJ/mm and interpass ≤ 100–150 °C, string beads, no preheat, no PWHT normally required.
Can ERNiCrMo-14 be formed, bent or molded?
Supplied as drawn wire; deposit is very ductile and cold-formable but work hardens rapidly, so bending of clad plate needs generous radii and possible intermediate anneals.
What surface finishes work on ERNiCrMo-14?
Remove all heat tint by grinding, pickling (HNO3-HF) or electropolishing before service — residual oxide film markedly lowers crevice/pitting resistance; no anodizing or plating needed.
ERNiCrMo-14 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 |
|---|---|---|
| Cr | 19 – 23 | 21 |
| Mo | 15 – 17 | 16 |
| W | 3 – 4.4 | 3.8 |
| Fe | ≤ 5 | 1.5 |
| C | ≤ 0.01 | 0.01 |
| Mn | ≤ 1 | 0.3 |
| Si | ≤ 0.08 | 0.04 |
| P | ≤ 0.02 | 0.01 |
| S | ≤ 0.02 | 0 |
| Ti | 0.02 – 0.25 | 0.06 |
| Al | ≤ 0.5 | 0.15 |
| Cu | ≤ 0.5 | 0.05 |
| Cowhere specified by purchaser | ≤ 0.5 | 0.1 |
| Other, total | ≤ 0.5 | — |
| Niremainder, typically ~57 % | balance | — |
ERNiCrMo-14-AW — frequently asked
What is ERNiCrMo-14-AW used for?
ERNiCrMo-14-AW is typically used for high-pressure sour service components, downhole tools and high-strength corrosion-resistant fabrications. In short: strength-matched C-22-class filler; top corrosion score, 96; sour-service weld strength.
What is the yield strength of ERNiCrMo-14-AW?
ERNiCrMo-14-AW has a typical yield strength of 500 MPa (72.5 ksi) and a tensile strength of 800 MPa (116 ksi) — stronger than 73% of nickel alloy grades. Strength varies by condition: see the 2 listed tempers.
Is ERNiCrMo-14-AW easy to machine?
Not especially — machinability is rated poor (15/100, worse than 76% of nickel alloy grades). Weld deposits machine like C-276: rigid setups, positive-rake carbide, low speed (~15–25 m/min) with heavy feed and flood coolant to avoid work hardening.
Can ERNiCrMo-14-AW be welded?
Yes — weldability is rated excellent (92/100). GTAW/GMAW/PAW with 100 % Ar (or Ar+He) shielding and back purge; keep heat input ≤ 1.5 kJ/mm and interpass ≤ 100–150 °C, string beads, no preheat, no PWHT normally required.
What surface finishes work on ERNiCrMo-14-AW?
Remove all heat tint by grinding, pickling (HNO3-HF) or electropolishing before service — residual oxide film markedly lowers crevice/pitting resistance; no anodizing or plating needed.
Can ERNiCrMo-14-AW be formed, bent or molded?
Supplied as drawn wire; deposit is very ductile and cold-formable but work hardens rapidly, so bending of clad plate needs generous radii and possible intermediate anneals.
What is the maximum service temperature of ERNiCrMo-14-AW?
ERNiCrMo-14-AW 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 ERNiCrMo-14-AW and ERNiCrMo-14-SA?
AW is the default condition — standard condition for pressure-equipment joints: deposit used in the as-welded state with no post-weld heat treatment. SA: choose when the fabricated part is solution annealed after welding to homogenise segregation and restore maximum corrosion resistance and ductility. Yield strength is 500 MPa in AW versus 400 MPa in SA.
Sources
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods — American Welding Society (2018)
- EN ISO 18274 — Welding consumables, solid wires and rods for nickel and nickel alloys (S Ni 6686) — ISO (2011)
- ASTM B574 / B575 — UNS N06686 rod, bar, plate and sheet — ASTM (2020)
- INCONEL alloy 686 / 686CPT filler metal data — Special Metals Corporation (2020)
- ASM Handbook Vol. 6 (Welding, Brazing & Soldering) and Vol. 13B (Corrosion: Materials) — ASM International (2005)
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.