Nickel Alloy ERNiMo-3
UNS N10675 · also Hastelloy B-3 Filler Wire
ERNiMo-3 is a nickel-molybdenum filler wire (UNS N10675, AWS A5.14 family) matching Hastelloy B-3, selected for welds exposed to hydrochloric acid and other non-oxidizing reducing acids.
Reference datasheet — ERNiMo-3 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
ERNiMo-3 tempers and conditions
ERNiMo-3 is supplied in 3 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
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 |
Supply forms, finishes and certifications
Ways ERNiMo-3 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
SA-WIRE | SA | Supply form |
What is ERNiMo-3?
ERNiMo-3 is a nickel-molybdenum filler wire (UNS N10675, AWS A5.14 family) matching Hastelloy B-3, selected for welds exposed to hydrochloric acid and other non-oxidizing reducing acids. It is supplied as cold-drawn spool wire and solution-annealed wire for GTAW and GMAW of B-3 plate, pipe and overlay; as-welded deposits give about 440 MPa yield, 760 MPa tensile, 40 % elongation and 210 HB (92 HRB), with a corrosion score of 85. Service is limited to 550 °C, the alloy has no chromium so it is unsuitable for oxidizing media, and machinability is very low (score 15); use ERNiCrMo-4 where oxidizers or chlorides are present. ERNiMo-3 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). ERNiMo-3 has a yield strength of 440 MPa (63.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 65% of nickel alloy grades. Elongation at break is 40% and the elastic modulus is 217 GPa (31.5 Msi).
What is ERNiMo-3 used for?
- hydrochloric acid processing equipment
- chemical reactor vessels
- acetic acid production equipment
Limitations
- Low electrical conductivity — 1.3 % IACS, worse than 97% of nickel alloy grades
- Hard to polish — 60/100, worse than 84% of nickel alloy grades
ERNiMo-3 properties
Typical room-temperature values for ERNiMo-3-AW; bars are the position among nickel alloy grades.
Physical3
ERNiMo-3 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 has a yield strength of 440 MPa (63.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 65% of nickel alloy grades. Elongation at break is 40% and the elastic modulus is 217 GPa (31.5 Msi).
Thermal6
ERNiMo-3 is rated for continuous service to 550°C (1,022 °F). It conducts heat at 10 W/m·K (5.78 BTU/hr·ft·°F), worse than 88% of nickel alloy grades. Thermal expansion is 10.7 µm/m·K (5.94 µin/in·°F).
Electrical3
ERNiMo-3 conducts electricity at 1.3 % IACS, worse than 97% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), better than 74% of nickel alloy grades.
Sustainability4
Producing a kilogram of ERNiMo-3 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's machinability is poor (15/100, worse than 76% of nickel alloy grades); weldability very good (80/100); formability good (60/100).
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. ERNiMo-3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ERNiMo-3
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.
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 |
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.
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 ERNiMo-3 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- N10675
- Trade names
- Hastelloy B-3 Filler Wire
- Also called
- AWS A5.14 ERNiMo-3
How much does ERNiMo-3 cost?
ERNiMo-3 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.
ERNiMo-3 — frequently asked
What is ERNiMo-3 used for?
ERNiMo-3 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?
ERNiMo-3 has a typical yield strength of 440 MPa (63.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 65% of nickel alloy grades. Strength varies by condition: see the 3 listed tempers.
Is ERNiMo-3 easy to machine?
Not especially — machinability is rated poor (15/100, worse than 76% 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 be welded?
Yes — weldability is rated very good (80/100). 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?
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 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?
ERNiMo-3 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.
How much does ERNiMo-3 cost?
ERNiMo-3 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 — 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; 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.