Nickel Alloy ERNi-1-SR (Stress relieved)
Heat-treated state
UNS N02061 · also Nickel Filler Metal 61, Filler Metal 61
Use when the fabrication is annealed or stress-relieved after welding; strength drops toward annealed Nickel 200 with ductility gain.
Values for the SR condition
Other ERNi-1 tempers and conditions
ERNi-1 is listed in 4 conditions; see the grade overview at ERNi-1.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SRThis page Stress relieved | Use when the fabrication is annealed or stress-relieved after welding; strength drops toward annealed Nickel 200 with ductility gain. | 165 | 420 | 45 | 90 HB | 14 % IACS |
As-welded deposit made by GMAW (MIG) spool wire | Pick for higher deposition rate on thicker Nickel 200/201 sections and pure-nickel overlay cladding. | 305 | 460 | 33 | 108 HB | 12.5 % IACS |
AWDefault As-welded deposit | Default condition: properties of the undiluted as-deposited weld metal, no post-weld heat treatment. | 310 | 470 | 35 | 105 HB | 13 % IACS |
As-welded deposit made by GTAW (TIG) with Ar shielding | Pick for thin sections, root passes and highest-purity low-porosity nickel deposits. | 320 | 480 | 37 | 105 HB | 13 % IACS |
What is ERNi-1-SR?
ERNi-1-SR is ERNi-1 heat treated to SR — use when the fabrication is annealed or stress-relieved after welding; strength drops toward annealed Nickel 200 with ductility gain. ERNi-1-SR has a yield strength of 165 MPa (23.9 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 96% of nickel alloy grades. Elongation at break is 45% and the elastic modulus is 205 GPa (29.7 Msi). ERNi-1-SR has a density of 8.89 g/cm³ (0.321 lb/in³), heavier than 88% of nickel alloy grades. It melts at 1,435°C (2,615 °F). AW is the default condition FabDigit quotes; SR is available on request or by drawing note.
Advantages
- Conducts heat well — 58 W/m·K (33.5 BTU/hr·ft·°F), better than 97% of nickel alloy grades
- High electrical conductivity — 14 % IACS, better than 97% of nickel alloy grades
- Forms and bends easily — 85/100, better than 95% of nickel alloy grades
- Readily welded — 88/100, better than 92% of nickel alloy grades
- Tough — resists crack growth — 140 MPa·√m (127.4 ksi·√in), better than 91% of nickel alloy grades
Limitations
- Low strength — 165 MPa (23.9 ksi), worse than 96% of nickel alloy grades
- Limited service temperature — 425°C (797 °F), worse than 90% of nickel alloy grades
- Needs corrosion protection — 68/100, worse than 82% of nickel alloy grades
ERNi-1-SR properties
Typical room-temperature values for ERNi-1-SR; 22 are specific to this condition. Other listed values are ERNi-1 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
ERNi-1-SR has a density of 8.89 g/cm³ (0.321 lb/in³), heavier than 88% of nickel alloy grades. It melts at 1,435°C (2,615 °F).
Mechanical16
ERNi-1-SR has a yield strength of 165 MPa (23.9 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 96% of nickel alloy grades. Elongation at break is 45% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
ERNi-1-SR is rated for continuous service to 425°C (797 °F). It conducts heat at 58 W/m·K (33.5 BTU/hr·ft·°F), better than 97% of nickel alloy grades. Thermal expansion is 13.3 µm/m·K (7.39 µin/in·°F).
Electrical3
ERNi-1-SR conducts electricity at 14 % IACS, better than 97% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), worse than 82% of nickel alloy grades.
Sustainability4
Producing a kilogram of ERNi-1-SR takes about 165 MJ of energy and emits 14.5 kg of CO₂ — more than 54% of nickel alloy grades. Typical recycled content is 25%.
Manufacturability8
ERNi-1-SR's machinability is poor (30/100, better than 90% of nickel alloy grades); weldability excellent (88/100); formability excellent (85/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ERNi-1-SR
Is ERNi-1 easy to machine?
Nickel deposits are gummy and work-hardening — use sharp positive-rake carbide, heavy rigid setups, low speed with high feed and flood coolant; avoid dwelling.
Can ERNi-1 be welded?
Use DCEN GTAW or spray/pulsed GMAW with pure Ar (Ar+He for thick sections), stringer beads, low heat input, interpass below ~150 °C; joints must be ground bright and degreased since sulfur, lead, paint or oil cause severe hot cracking.
Can ERNi-1 be formed, bent or molded?
Supplied as cold-drawn wire/rod; straighten gently and keep spools clean and dry — kinks and surface contamination are the main feedability and porosity causes.
What surface finishes work on ERNi-1?
Pickle or wire-brush (stainless brush) to remove Ti-rich oxide before further passes; weld metal takes a good polish and can be electroplated, but is not anodizable and remains ferromagnetic.
ERNi-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 |
|---|---|---|
| Tideoxidizer / nitride former, controls porosity | 2 – 3.5 | 2.8 |
| C | ≤ 0.15 | 0.05 |
| Mn | ≤ 1 | 0.3 |
| Fe | ≤ 1 | 0.4 |
| Si | ≤ 0.75 | 0.2 |
| Cu | ≤ 0.25 | 0.05 |
| Al | ≤ 1.5 | 0.3 |
| S | ≤ 0.02 | 0.01 |
| P | ≤ 0.03 | 0.01 |
| Other elements, total | ≤ 0.5 | — |
| NiNi + Co, 93.0 % min per AWS A5.14 | ≥ 93 (balance) | — |
ERNi-1-SR — frequently asked
What is ERNi-1-SR used for?
ERNi-1-SR is typically used for nickel 200/201 vessels, caustic soda handling equipment, electronic and battery component welding and cladding overlays. In short: pure nickel weld deposit; first choice for caustic service; lowest-strength nickel filler.
What is the yield strength of ERNi-1-SR?
ERNi-1-SR has a typical yield strength of 165 MPa (23.9 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 96% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is ERNi-1-SR easy to machine?
Not especially — machinability is rated poor (30/100, better than 90% of nickel alloy grades). Nickel deposits are gummy and work-hardening — use sharp positive-rake carbide, heavy rigid setups, low speed with high feed and flood coolant; avoid dwelling.
Can ERNi-1-SR be welded?
Yes — weldability is rated excellent (88/100). Use DCEN GTAW or spray/pulsed GMAW with pure Ar (Ar+He for thick sections), stringer beads, low heat input, interpass below ~150 °C; joints must be ground bright and degreased since sulfur, lead, paint or oil cause severe hot cracking.
What surface finishes work on ERNi-1-SR?
Pickle or wire-brush (stainless brush) to remove Ti-rich oxide before further passes; weld metal takes a good polish and can be electroplated, but is not anodizable and remains ferromagnetic.
Can ERNi-1-SR be formed, bent or molded?
Supplied as cold-drawn wire/rod; straighten gently and keep spools clean and dry — kinks and surface contamination are the main feedability and porosity causes.
What is the maximum service temperature of ERNi-1-SR?
ERNi-1-SR is rated for continuous use to about 425°C (797 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ERNi-1-AW and ERNi-1-SR?
AW is the default condition — default condition: properties of the undiluted as-deposited weld metal, no post-weld heat treatment. SR: use when the fabrication is annealed or stress-relieved after welding; strength drops toward annealed Nickel 200 with ductility gain. Yield strength is 310 MPa in AW versus 165 MPa in SR.
Sources
- AWS A5.14/A5.14M — Nickel and Nickel-Alloy Bare Welding Electrodes and Rods — American Welding Society (2018)
- ASTM B863 / UNS N02061 designation data — ASTM (2020)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (Nickel and Nickel Alloys) — ASM International (2005)
- ASM Handbook Vol.6 — Welding, Brazing, and Soldering (Nickel alloy welding) — ASM International (1993)
- Nickel Filler Metal 61 (ERNi-1) welding consumable datasheet — Special Metals Welding Products / Voestalpine Böhler Welding (2021)
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.