Nickel Alloy ENiCrMo-3-SR (Stress relieved)
Heat-treated state
UNS W86112
Pick when the joint must follow the PWHT cycle of an attached ferritic component or when residual stress must be lowered; slight strength drop, ductility gain.
Values for the SR condition
Other ENiCrMo-3 tempers and conditions
ENiCrMo-3 is listed in 4 conditions; see the grade overview at ENiCrMo-3.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed 1090–1150 °C, rapid cool | Used when the whole fabrication is solution annealed (e.g. severe corrosion service) to dissolve interdendritic Laves/carbides and homogenise the deposit. | 400 | 740 | 48 | 10 HRC | 1.4 % IACS |
SRThis page Stress relieved | Pick when the joint must follow the PWHT cycle of an attached ferritic component or when residual stress must be lowered; slight strength drop, ductility gain. | 460 | 760 | 42 | 14 HRC | 1.4 % IACS |
AWDefault As-welded deposit | Standard delivery condition of the deposit: use for virtually all 625, dissimilar-metal and overlay joints, no PWHT required. | 520 | 800 | 38 | 220 HB | — |
Thermally exposed / aged 650–760 °C service | Property set to assume for deposits after long exposure near 700 °C, where γ″ and δ/Laves precipitation raise strength but sharply cut toughness. | 700 | 950 | 18 | 29 HRC | 1.4 % IACS |
What is ENiCrMo-3-SR?
ENiCrMo-3-SR is ENiCrMo-3 heat treated to SR — pick when the joint must follow the PWHT cycle of an attached ferritic component or when residual stress must be lowered; slight strength drop, ductility gain. ENiCrMo-3-SR has a yield strength of 460 MPa (66.7 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 67% of nickel alloy grades. Elongation at break is 42% and the elastic modulus is 205 GPa (29.7 Msi). ENiCrMo-3-SR has a density of 8.44 g/cm³ (0.305 lb/in³), heavier than 60% of nickel alloy grades. It melts at 1,290°C (2,354 °F). AW is the default condition FabDigit quotes; SR is available on request or by drawing note.
Advantages
- Readily welded — 93/100, better than 99% of nickel alloy grades
- Tough — resists crack growth — 145 MPa·√m (132 ksi·√in), better than 93% of nickel alloy grades
- Good corrosion resistance — 88/100, better than 81% of nickel alloy grades
Limitations
- Poor heat conductor — 9.9 W/m·K (5.72 BTU/hr·ft·°F), worse than 90% of nickel alloy grades
- Hard to polish — 60/100, worse than 84% of nickel alloy grades
ENiCrMo-3-SR properties
Typical room-temperature values for ENiCrMo-3-SR; 23 are specific to this condition. Other listed values are ENiCrMo-3 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
ENiCrMo-3-SR has a density of 8.44 g/cm³ (0.305 lb/in³), heavier than 60% of nickel alloy grades. It melts at 1,290°C (2,354 °F).
Mechanical15
ENiCrMo-3-SR has a yield strength of 460 MPa (66.7 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 67% of nickel alloy grades. Elongation at break is 42% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
ENiCrMo-3-SR is rated for continuous service to 815°C (1,499 °F). It conducts heat at 9.9 W/m·K (5.72 BTU/hr·ft·°F), worse than 90% of nickel alloy grades. Thermal expansion is 12.8 µm/m·K (7.11 µin/in·°F).
Electrical3
ENiCrMo-3-SR conducts electricity at 1.4 % IACS, worse than 80% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (88/100), better than 81% of nickel alloy grades.
Sustainability4
Producing a kilogram of ENiCrMo-3-SR takes about 175 MJ of energy and emits 13.5 kg of CO₂ — more than 65% of nickel alloy grades. Typical recycled content is 35%.
Manufacturability6
ENiCrMo-3-SR's machinability is poor (20/100, better than 53% of nickel alloy grades); weldability excellent (93/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ENiCrMo-3-SR
Is ENiCrMo-3 easy to machine?
Deposit machines like solution-treated alloy 625 — work-hardens fast; use rigid setups, sharp positive-rake carbide, heavy positive feed, 20–35 m/min surface speed and flood coolant.
Can ENiCrMo-3 be welded?
DCEP, stringer beads, low heat input (<1.5 kJ/mm), interpass below ~150 °C and no weave beyond ~3× core diameter; re-dry electrodes 250–300 °C to avoid porosity and control dilution from carbon steel to keep Fe low.
Can ENiCrMo-3 be formed, bent or molded?
Not a wrought product — weld metal is not formed; peening between passes is sometimes used to control distortion in thick overlays.
What surface finishes work on ENiCrMo-3?
Grind/brush with dedicated stainless or Ni-alloy tools, then pickle-passivate or electropolish; anodizing is not applicable and iron contamination must be avoided in corrosion service.
ENiCrMo-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 |
|---|---|---|
| CAWS A5.11 undiluted weld metal | ≤ 0.1 | 0.03 |
| Mn | ≤ 1 | 0.4 |
| Si | ≤ 0.75 | 0.4 |
| P | ≤ 0.02 | 0.01 |
| S | ≤ 0.02 | 0.01 |
| Cr | 20 – 23 | 21.8 |
| Mo | 8 – 10 | 9 |
| Nb+Ta | 3.15 – 4.15 | 3.6 |
| Fe | ≤ 7 | 2.5 |
| Al | ≤ 0.4 | 0.15 |
| Ti | ≤ 0.4 | 0.15 |
| Cu | ≤ 0.5 | 0.05 |
| Cowhen specified | ≤ 0.12 | 0.05 |
| Other, total | ≤ 0.5 | — |
| NiNi + incidental Co, 55 % min | ≥ 55 (balance) | — |
ENiCrMo-3-SR — frequently asked
What is ENiCrMo-3-SR used for?
ENiCrMo-3-SR is typically used for alloy 625 fabrication, subsea and offshore equipment welding, dissimilar metal joints and overlay cladding. In short: general-purpose 625 electrode; service to 815 °C; strong dissimilar-metal filler.
What is the yield strength of ENiCrMo-3-SR?
ENiCrMo-3-SR has a typical yield strength of 460 MPa (66.7 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 67% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is ENiCrMo-3-SR easy to machine?
Not especially — machinability is rated poor (20/100, better than 53% of nickel alloy grades). Deposit machines like solution-treated alloy 625 — work-hardens fast; use rigid setups, sharp positive-rake carbide, heavy positive feed, 20–35 m/min surface speed and flood coolant.
Can ENiCrMo-3-SR be welded?
Yes — weldability is rated excellent (93/100). DCEP, stringer beads, low heat input (<1.5 kJ/mm), interpass below ~150 °C and no weave beyond ~3× core diameter; re-dry electrodes 250–300 °C to avoid porosity and control dilution from carbon steel to keep Fe low.
What surface finishes work on ENiCrMo-3-SR?
Grind/brush with dedicated stainless or Ni-alloy tools, then pickle-passivate or electropolish; anodizing is not applicable and iron contamination must be avoided in corrosion service.
Can ENiCrMo-3-SR be formed, bent or molded?
Not a wrought product — weld metal is not formed; peening between passes is sometimes used to control distortion in thick overlays.
What is the maximum service temperature of ENiCrMo-3-SR?
ENiCrMo-3-SR is rated for continuous use to about 815°C (1,499 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ENiCrMo-3-AW and ENiCrMo-3 Aged?
AW is the default condition — standard delivery condition of the deposit: use for virtually all 625, dissimilar-metal and overlay joints, no PWHT required. Aged: property set to assume for deposits after long exposure near 700 °C, where γ″ and δ/Laves precipitation raise strength but sharply cut toughness. Yield strength is 520 MPa in AW versus 700 MPa in Aged.
Sources
- AWS A5.11/A5.11M — Nickel and Nickel-Alloy Welding Electrodes for Shielded Metal Arc Welding — American Welding Society (2018)
- ASME BPVC Section II Part C, SFA-5.11 — ASME (2023)
- INCONEL alloy 625 / INCO-WELD 625 electrode data — Special Metals Corporation (2013)
- Ni-base SMAW consumable datasheets (Böhler, ESAB, Ni6625) — voestalpine Böhler Welding / ESAB / Atlantic (2023)
- ASM Handbook Vol. 6 Welding, Brazing and Soldering; Vol. 13B Corrosion — ASM International (2005)
- GB/T 13814 (ENiCrMo-3 / Ni337) (2008)
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.