Nickel Alloy ERNiMo-3 AW+SA
Heat-treated state
UNS N10675 · also Hastelloy B-3 Filler Wire
AW+SA = weld deposit solution annealed after welding
Choose when the fabrication is fully solution annealed after welding to homogenise the deposit and maximise ductility and intergranular corrosion resistance.
Values for the AW+SA condition
Other ERNiMo-3 tempers and conditions
ERNiMo-3 is listed in 3 conditions; see the grade overview at ERNiMo-3.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AW+SAThis page Weld deposit solution annealed after welding | Choose when the fabrication is fully solution annealed after welding to homogenise the deposit and maximise ductility and intergranular corrosion resistance. | 395 | 780 | 52 | 195 HB | 1.3 % IACS |
AWDefault As-welded deposit | Default condition for design of GTAW/GMAW joints and weld overlays made with this wire, no post-weld heat treatment. | 440 | 760 | 40 | 210 HB | — |
spooled GMAW/SAW wire, as-drawn temper | Pick for spool-fed GMAW, plasma or laser hot-wire feeding, where the stiffer cold-drawn wire feeds better; wire strength is irrelevant to joint properties. | 800 | 1,000 | 15 | 25 HRC | 1.3 % IACS |
What is ERNiMo-3 AW+SA?
ERNiMo-3 AW+SA is ERNiMo-3 heat treated to AW+SA — choose when the fabrication is fully solution annealed after welding to homogenise the deposit and maximise ductility and intergranular corrosion resistance. ERNiMo-3 AW+SA has a yield strength of 395 MPa (57.3 ksi) and a tensile strength of 780 MPa (113 ksi) — stronger than 52% of nickel alloy grades. Elongation at break is 52% and the elastic modulus is 217 GPa (31.5 Msi). ERNiMo-3 AW+SA has a density of 9.22 g/cm³ (0.333 lb/in³), heavier than 97% of nickel alloy grades. It melts at 1,370°C (2,498 °F). AW is the default condition FabDigit quotes; AW+SA is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 52%, better than 90% of nickel alloy grades
- Tough — resists crack growth — 130 MPa·√m (118.3 ksi·√in), better than 85% of nickel alloy grades
- Good corrosion resistance — 88/100, better than 81% of nickel alloy grades
- Readily welded — 82/100, better than 77% of nickel alloy grades
Limitations
- Hard to polish — 60/100, worse than 84% of nickel alloy grades
ERNiMo-3 AW+SA properties
Typical room-temperature values for ERNiMo-3 AW+SA; 22 are specific to this condition. Other listed values are ERNiMo-3 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
ERNiMo-3 AW+SA has a density of 9.22 g/cm³ (0.333 lb/in³), heavier than 97% of nickel alloy grades. It melts at 1,370°C (2,498 °F).
Mechanical14
ERNiMo-3 AW+SA has a yield strength of 395 MPa (57.3 ksi) and a tensile strength of 780 MPa (113 ksi) — stronger than 52% of nickel alloy grades. Elongation at break is 52% and the elastic modulus is 217 GPa (31.5 Msi).
Thermal6
ERNiMo-3 AW+SA is rated for continuous service to 550°C (1,022 °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 10.7 µm/m·K (5.94 µin/in·°F).
Electrical3
ERNiMo-3 AW+SA conducts electricity at 1.3 % IACS, worse than 95% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (88/100), better than 81% of nickel alloy grades.
Sustainability4
Producing a kilogram of ERNiMo-3 AW+SA takes about 175 MJ of energy and emits 13 kg of CO₂ — more than 65% of nickel alloy grades. Typical recycled content is 30%.
Manufacturability7
ERNiMo-3 AW+SA's machinability is poor (18/100, worse than 61% of nickel alloy grades); weldability very good (82/100); formability good (65/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ERNiMo-3 AW+SA
Is ERNiMo-3 easy to machine?
Weld overlay machines like solution-annealed Ni-Mo: slow speeds, heavy positive-rake carbide, rigid setup and flood coolant; expect rapid work hardening and poor chip breaking.
Can ERNiMo-3 be welded?
GTAW/GMAW with 100 % Ar (or Ar-He), stringer beads, low heat input and interpass ≤95–150 °C; no preheat, no filler dilution with high-Cr/high-Fe metals, and avoid prolonged 650–900 °C exposure.
Can ERNiMo-3 be formed, bent or molded?
Supplied as drawn wire; joint design should allow low-restraint, multi-pass filling since the deposit is ductile but sensitive to high dilution from carbon steel.
What surface finishes work on ERNiMo-3?
Remove all weld heat tint and oxide by pickling, grinding or stainless brushing before service — residual scale sharply degrades HCl resistance; electropolishing gives the best surface, anodizing is not applicable.
ERNiMo-3 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 |
|---|---|---|
| Mo | 27 – 32 | 28.5 |
| Cr | 1 – 3 | 1.5 |
| Fe | 1 – 3 | 1.5 |
| Co | ≤ 3 | 0.5 |
| W | ≤ 3 | 0.5 |
| Mn | ≤ 3 | 0.25 |
| Aldeoxidiser | ≤ 0.5 | 0.3 |
| Ti | ≤ 0.2 | 0.1 |
| Sikept low to avoid β-phase / intermetallics | ≤ 0.1 | 0.03 |
| C | ≤ 0.01 | 0.01 |
| Cu | ≤ 0.2 | 0.05 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.01 | 0 |
| Nibalance, typically 64–66 % | balance | — |
ERNiMo-3 AW+SA — frequently asked
What is ERNiMo-3 AW+SA used for?
ERNiMo-3 AW+SA is typically used for hydrochloric acid processing equipment, chemical reactor vessels and acetic acid production equipment. In short: matches Hastelloy B-3; best for hydrochloric acid; not for oxidizing media.
What is the yield strength of ERNiMo-3 AW+SA?
ERNiMo-3 AW+SA has a typical yield strength of 395 MPa (57.3 ksi) and a tensile strength of 780 MPa (113 ksi) — stronger than 52% of nickel alloy grades. Strength varies by condition: see the 3 listed tempers.
Is ERNiMo-3 AW+SA easy to machine?
Not especially — machinability is rated poor (18/100, worse than 61% of nickel alloy grades). Weld overlay machines like solution-annealed Ni-Mo: slow speeds, heavy positive-rake carbide, rigid setup and flood coolant; expect rapid work hardening and poor chip breaking.
Can ERNiMo-3 AW+SA be welded?
Yes — weldability is rated very good (82/100). GTAW/GMAW with 100 % Ar (or Ar-He), stringer beads, low heat input and interpass ≤95–150 °C; no preheat, no filler dilution with high-Cr/high-Fe metals, and avoid prolonged 650–900 °C exposure.
What surface finishes work on ERNiMo-3 AW+SA?
Remove all weld heat tint and oxide by pickling, grinding or stainless brushing before service — residual scale sharply degrades HCl resistance; electropolishing gives the best surface, anodizing is not applicable.
Can ERNiMo-3 AW+SA be formed, bent or molded?
Supplied as drawn wire; joint design should allow low-restraint, multi-pass filling since the deposit is ductile but sensitive to high dilution from carbon steel.
What is the maximum service temperature of ERNiMo-3 AW+SA?
ERNiMo-3 AW+SA is rated for continuous use to about 550°C (1,022 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods — American Welding Society (2018)
- HASTELLOY B-3 alloy (N10675) principal features and data — Haynes International (2020)
- ASTM B335 / B622 — Ni-Mo alloy rod and seamless pipe/tube (N10675) — ASTM International (2021)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering (nickel-alloy filler metals) — ASM International (1993)
- ASM Specialty Handbook: Nickel, Cobalt and Their Alloys — ASM International (2000)
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.