Steel E70C-Ni2
UNS W22030
E70C-Ni2 (UNS W22030) is a nickel-alloyed composite cored electrode with about 2 % Ni, depositing 470 MPa yield and 560 MPa tensile metal with 27 % elongation and about 175 HB.
Reference datasheet — E70C-Ni2 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
E70C-Ni2 tempers and conditions
E70C-Ni2 is supplied in 4 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Post-weld heat treated | Pick when the fabrication code requires stress relief: strength drops slightly, ductility and dimensional stability improve. | 430 | 520 | 29 | 160 HB | 8.8 % IACS |
As-welded, 100 % CO₂ shielding | Pick for lower gas cost and deeper penetration; slightly lower deposit toughness and more spatter than mixed gas. | 460 | 550 | 26 | 172 HB | 8.5 % IACS |
AWDefault As-welded deposit | Default condition: properties of the deposit straight off the arc, no post-weld heat treatment. | 470 | 560 | 27 | 175 HB | 8.6 % IACS |
As-welded, 75–80 % Ar / balance CO₂ shielding | Pick when mixed-gas shielding is used — slightly higher strength and the best low-temperature toughness with low spatter. | 480 | 570 | 28 | 178 HB | 8.6 % IACS |
What is E70C-Ni2?
E70C-Ni2 (UNS W22030) is a nickel-alloyed composite cored electrode with about 2 % Ni, depositing 470 MPa yield and 560 MPa tensile metal with 27 % elongation and about 175 HB. Engineers use it where good low-temperature toughness is required on carbon-manganese and low-alloy structural steels; it is supplied as spooled cored wire and classified in mixed-gas (AW-M), CO₂ (AW-C), as-welded and PWHT conditions. Maximum service temperature on file is 400 °C, the deposit rusts like carbon steel, and toughness depends on holding heat input and interpass temperature down. E70C-B2L is the choice instead when elevated-temperature Cr-Mo service is the driver. E70C-Ni2 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,460°C (2,660 °F). E70C-Ni2 has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — stronger than 57% of steel grades. Elongation at break is 27% and the elastic modulus is 205 GPa (29.7 Msi).
What is E70C-Ni2 used for?
- Low-temperature storage tanks
- Offshore structural steel
- Arctic pipeline construction
- LNG-adjacent structural steel
Advantages
- Readily welded — 92/100, better than 93% of steel grades
- Ductile — tolerates forming and impact — 27%, better than 86% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
E70C-Ni2 properties
Typical room-temperature values for E70C-Ni2-AW; bars are the position among steel grades.
Physical3
E70C-Ni2 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,460°C (2,660 °F).
Mechanical16
E70C-Ni2 has a yield strength of 470 MPa (68.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — stronger than 57% of steel grades. Elongation at break is 27% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
E70C-Ni2 is rated for continuous service to 400°C (752 °F). It conducts heat at 38 W/m·K (22 BTU/hr·ft·°F), worse than 69% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
E70C-Ni2 conducts electricity at 8.6 % IACS, better than 66% of steel grades.
Chemical & Environmental2
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of E70C-Ni2 takes about 32 MJ of energy and emits 2.4 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 25%.
Manufacturability7
E70C-Ni2's machinability is good (55/100, better than 62% of steel grades); weldability excellent (92/100); formability fair (45/100).
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 steel family
Yield strength against density for every steel grade FabDigit runs. E70C-Ni2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E70C-Ni2
Is E70C-Ni2 easy to machine?
Weld deposit machines/grinds like normalized low-alloy steel (~60 % of AISI 1212); use carbide tooling and expect variable hardness across bead and HAZ.
Can E70C-Ni2 be welded?
Run DCEP with 75–80 % Ar/CO₂ (M) or CO₂ (C), keep interpass ≤150–250 °C and heat input moderate to protect low-temperature toughness; keep wire dry to avoid hydrogen cracking.
Can E70C-Ni2 be formed, bent or molded?
Not a wrought product — supplied as drawn seamed/seamless cored wire on spools; no forming operations on the deposit beyond weld-cap dressing.
E70C-Ni2 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 |
|---|---|---|
| Cweld metal analysis per AWS A5.29 | ≤ 0.12 | 0.06 |
| Mn | ≤ 1.5 | 1.1 |
| Si | ≤ 0.8 | 0.45 |
| Nisource of low-temperature toughness | 1.75 – 2.75 | 2.2 |
| Cr | ≤ 0.15 | 0.03 |
| Mo | ≤ 0.35 | 0.02 |
| V | ≤ 0.05 | 0.01 |
| Cuincludes any copper coating | ≤ 0.35 | 0.05 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on E70C-Ni2?
Bare ferrous deposit rusts quickly; blast, prime and paint or metallize the weldment, and dress caps for fatigue-critical joints.
Surface treatments FabDigit runs on steel 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).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel E70C-Ni2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W22030
- Also called
- AWS E70C-Ni2AWS E49C-Ni2
How much does E70C-Ni2 cost?
E70C-Ni2 is a standard-cost steel ($$), cheaper than about 71% 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.
E70C-Ni2 — frequently asked
What is E70C-Ni2 used for?
E70C-Ni2 is typically used for low-temperature storage tanks, offshore structural steel, arctic pipeline construction and LNG-adjacent structural steel. In short: 2 % Ni toughness filler; good low-temperature notch toughness; cored wire for C-Mn steels.
What is the yield strength of E70C-Ni2?
E70C-Ni2 has a typical yield strength of 470 MPa (68.2 ksi) and a tensile strength of 560 MPa (81.2 ksi) — stronger than 57% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is E70C-Ni2 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Weld deposit machines/grinds like normalized low-alloy steel (~60 % of AISI 1212); use carbide tooling and expect variable hardness across bead and HAZ.
Can E70C-Ni2 be welded?
Yes — weldability is rated excellent (92/100). Run DCEP with 75–80 % Ar/CO₂ (M) or CO₂ (C), keep interpass ≤150–250 °C and heat input moderate to protect low-temperature toughness; keep wire dry to avoid hydrogen cracking.
What surface finishes work on E70C-Ni2?
Bare ferrous deposit rusts quickly; blast, prime and paint or metallize the weldment, and dress caps for fatigue-critical joints.
Can E70C-Ni2 be formed, bent or molded?
Not a wrought product — supplied as drawn seamed/seamless cored wire on spools; no forming operations on the deposit beyond weld-cap dressing.
What is the maximum service temperature of E70C-Ni2?
E70C-Ni2 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E70C-Ni2-AW and E70C-Ni2 PWHT?
AW is the default condition — default condition: properties of the deposit straight off the arc, no post-weld heat treatment. PWHT: pick when the fabrication code requires stress relief: strength drops slightly, ductility and dimensional stability improve. Yield strength is 470 MPa in AW versus 430 MPa in PWHT.
How much does E70C-Ni2 cost?
E70C-Ni2 is a standard-cost steel ($$), cheaper than about 71% 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 A5.29/A5.29M — Low-Alloy Steel Electrodes for Flux Cored Arc Welding — American Welding Society (2010)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Metal-cored / flux-cored 2 %Ni wire consumable datasheets — Lincoln Electric / ESAB / Kobelco (2023)
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.