Nickel Alloy ENiCrMo-1
UNS W80001
ENiCrMo-1 is the shielded metal arc covered electrode counterpart to ERNiCrMo-1 (UNS W80001), used for manual welding of Hastelloy W and similar reducing-service nickel alloys.
Reference datasheet — ENiCrMo-1 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
ENiCrMo-1 tempers and conditions
ENiCrMo-1 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 |
|---|---|---|---|---|---|---|
Solution annealed | Used for weld overlay or clad components that are solution annealed with the base metal to restore maximum intergranular-corrosion resistance and ductility. | 300 | 620 | 48 | 150 HB | 1.5 % IACS |
Stress relieved | Pick when the fabrication code or base metal requires PWHT; slightly lowers strength and can reduce corrosion performance if slow-cooled through the sensitization range. | 400 | 660 | 38 | 180 HB | 1.5 % IACS |
AWDefault As-welded deposit | Standard supplied/tested condition: use for corrosion-service joints and overlays where no post-weld heat treatment is applied. | 450 | 690 | 35 | 195 HB | 1.5 % IACS |
What is ENiCrMo-1?
ENiCrMo-1 is the shielded metal arc covered electrode counterpart to ERNiCrMo-1 (UNS W80001), used for manual welding of Hastelloy W and similar reducing-service nickel alloys. It is chosen for field and maintenance repairs where GTAW access or shielding gas is impractical, and is supplied as flux-covered stick electrodes in standard diameters. As-welded deposits give about 450 MPa yield, 690 MPa tensile, 35% elongation and 90 HRB, with service to 540 °C and a corrosion rating of 82. Electrodes require redrying and careful storage, deposits are slow to machine, and availability is limited; ERNiCrMo-1 wire is the GTAW/GMAW equivalent. ENiCrMo-1 has a density of 8.3 g/cm³ (0.3 lb/in³), lighter than 52% of nickel alloy grades. It melts at 1,260°C (2,300 °F). ENiCrMo-1 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 66% of nickel alloy grades. Elongation at break is 35% and the elastic modulus is 196 GPa (28.4 Msi).
What is ENiCrMo-1 used for?
- manual SMAW repair of Ni-Mo alloys
- reducing acid process vessels
- field maintenance welding
Limitations
- Hard to polish — 55/100, worse than 95% of nickel alloy grades
- Limited service temperature — 540°C (1,004 °F), worse than 75% of nickel alloy grades
ENiCrMo-1 properties
Typical room-temperature values for ENiCrMo-1-AW; bars are the position among nickel alloy grades.
Physical3
ENiCrMo-1 has a density of 8.3 g/cm³ (0.3 lb/in³), lighter than 52% of nickel alloy grades. It melts at 1,260°C (2,300 °F).
Mechanical14
ENiCrMo-1 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 66% of nickel alloy grades. Elongation at break is 35% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal5
ENiCrMo-1 is rated for continuous service to 540°C (1,004 °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 14 µm/m·K (7.78 µin/in·°F).
Electrical3
ENiCrMo-1 conducts electricity at 1.5 % IACS, better than 59% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (82/100), better than 67% of nickel alloy grades.
Sustainability4
Producing a kilogram of ENiCrMo-1 takes about 180 MJ of energy and emits 13.5 kg of CO₂ — more than 69% of nickel alloy grades. Typical recycled content is 30%.
Manufacturability7
ENiCrMo-1's machinability is poor (22/100, better than 64% of nickel alloy grades); weldability very good (70/100); formability poor (30/100).
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. ENiCrMo-1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ENiCrMo-1
Is ENiCrMo-1 easy to machine?
Deposits are gummy and work-hardening — use rigid setups, sharp positive-rake carbide, low speed/heavy positive feed and flood coolant; grinding of weld caps is often faster than turning.
Can ENiCrMo-1 be welded?
DCEP, low heat input, stringer beads, interpass typically below 100–150 °C; redry electrodes per the maker (about 250–300 °C) and keep in a heated quiver to avoid porosity and hot cracking.
Can ENiCrMo-1 be formed, bent or molded?
Not a wrought product; weld deposits tolerate light peening but heavy cold forming of the joint is not recommended.
ENiCrMo-1 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 |
|---|---|---|
| Clow carbon to limit carbide sensitization | ≤ 0.05 | 0.03 |
| Mn | 1 – 2 | 1.5 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Cr | 21 – 23.5 | 22 |
| Mo | 5.5 – 7.5 | 6.5 |
| Fe | 18 – 21 | 19.5 |
| Cuaids resistance in reducing acids | 1.5 – 2.5 | 2 |
| Nb+Tastabilizing addition | 1.75 – 2.5 | 2.1 |
| Co | ≤ 2.5 | |
| W | ≤ 1 | |
| Others, total | ≤ 0.5 | |
| Niremainder, approx. 42–46 % | balance |
What surface finishes work on ENiCrMo-1?
Remove all slag and heat tint by grinding then pickle/passivate or electropolish to restore the Cr-Mo passive film; do not anodize.
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 ENiCrMo-1 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W80001
How much does ENiCrMo-1 cost?
ENiCrMo-1 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.
ENiCrMo-1 — frequently asked
What is ENiCrMo-1 used for?
ENiCrMo-1 is typically used for manual SMAW repair of Ni-Mo alloys, reducing acid process vessels and field maintenance welding. In short: SMAW version of ERNiCrMo-1; field-repair nickel electrode; reducing-service manual welding.
What is the yield strength of ENiCrMo-1?
ENiCrMo-1 has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 66% of nickel alloy grades. Strength varies by condition: see the 3 listed tempers.
Is ENiCrMo-1 easy to machine?
Not especially — machinability is rated poor (22/100, better than 64% of nickel alloy grades). Deposits are gummy and work-hardening — use rigid setups, sharp positive-rake carbide, low speed/heavy positive feed and flood coolant; grinding of weld caps is often faster than turning.
Can ENiCrMo-1 be welded?
Yes — weldability is rated very good (70/100). DCEP, low heat input, stringer beads, interpass typically below 100–150 °C; redry electrodes per the maker (about 250–300 °C) and keep in a heated quiver to avoid porosity and hot cracking.
What surface finishes work on ENiCrMo-1?
Remove all slag and heat tint by grinding then pickle/passivate or electropolish to restore the Cr-Mo passive film; do not anodize.
Can ENiCrMo-1 be formed, bent or molded?
Not a wrought product; weld deposits tolerate light peening but heavy cold forming of the joint is not recommended.
What is the maximum service temperature of ENiCrMo-1?
ENiCrMo-1 is rated for continuous use to about 540°C (1,004 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ENiCrMo-1-AW and ENiCrMo-1-SA?
AW is the default condition — standard supplied/tested condition: use for corrosion-service joints and overlays where no post-weld heat treatment is applied. SA: used for weld overlay or clad components that are solution annealed with the base metal to restore maximum intergranular-corrosion resistance and ductility. Yield strength is 450 MPa in AW versus 300 MPa in SA.
How much does ENiCrMo-1 cost?
ENiCrMo-1 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 A5.11/A5.11M — Nickel and Nickel-Alloy Welding Electrodes for Shielded Metal Arc Welding — American Welding Society (2018)
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods (ERNiCrMo-1) — American Welding Society (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- Hastelloy G / G-3 alloy technical data (Ni-Cr-Mo-Cu-Nb) — Haynes International (2020)
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.