Steel E110C-K3 PWHT
Heat-treated state
PWHT = post-weld heat treated
Use when the fabrication code mandates stress relief; residual stress and hardness drop but so does tensile strength — verify the joint still meets the 110 ksi design basis.
Values for the PWHT condition
Other E110C-K3 tempers and conditions
E110C-K3 is listed in 3 conditions; see the grade overview at E110C-K3.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
PWHTThis page Post-weld heat treated | Use when the fabrication code mandates stress relief; residual stress and hardness drop but so does tensile strength — verify the joint still meets the 110 ksi design basis. | 670 | 760 | 21 | 20 HRC | 7.6 % IACS |
AW-CO₂ | Pick when shop gas is straight CO₂; deeper penetration and lower cost but slightly lower toughness and higher spatter than Ar-mix. | 710 | 800 | 18 | 23 HRC | 7.5 % IACS |
AWDefault As-welded deposit | Standard classification condition — deposit used as welded on Q&T high-strength steels; best combination of 110 ksi strength and low-temperature toughness. | 720 | 810 | 19 | 24 HRC | 7.5 % IACS |
What is E110C-K3 PWHT?
E110C-K3 PWHT is E110C-K3 heat treated to PWHT — use when the fabrication code mandates stress relief; residual stress and hardness drop but so does tensile strength — verify the joint still meets the 110 ksi design basis. E110C-K3 PWHT has a yield strength of 670 MPa (97.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 80% of steel grades. Elongation at break is 21% and the elastic modulus is 205 GPa (29.7 Msi). E110C-K3 PWHT has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,460°C (2,660 °F). AW is the default condition FabDigit quotes; PWHT is available on request or by drawing note.
Advantages
- Readily welded — 90/100, better than 90% of steel grades
- Tough — resists crack growth — 120 MPa·√m (109.2 ksi·√in), better than 81% of steel grades
- High strength — 670 MPa (97.2 ksi), better than 80% of steel grades
Limitations
- High embodied carbon — 2.5 kg CO₂/kg, worse than 82% of steel grades
E110C-K3 PWHT properties
Typical room-temperature values for E110C-K3 PWHT; 23 are specific to this condition. Other listed values are E110C-K3 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
E110C-K3 PWHT has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,460°C (2,660 °F).
Mechanical16
E110C-K3 PWHT has a yield strength of 670 MPa (97.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 80% of steel grades. Elongation at break is 21% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
E110C-K3 PWHT is rated for continuous service to 425°C (797 °F). It conducts heat at 39 W/m·K (22.5 BTU/hr·ft·°F), worse than 67% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
E110C-K3 PWHT conducts electricity at 7.6 % IACS, worse than 65% of steel grades.
Chemical & Environmental2
Corrosion resistance is not recommended (14/100), better than 70% of steel grades.
Sustainability4
Producing a kilogram of E110C-K3 PWHT takes about 33 MJ of energy and emits 2.5 kg of CO₂ — more than 76% of steel grades. Typical recycled content is 25%.
Manufacturability7
E110C-K3 PWHT's machinability is fair (45/100, worse than 65% of steel grades); weldability excellent (90/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E110C-K3 PWHT
Is E110C-K3 easy to machine?
As-welded deposit is ~24 HRC; machine with carbide at moderate speed or stress-relieve first to ease cutting and reduce distortion.
Can E110C-K3 be welded?
DCEP, gas-shielded metal-cored (75-80 % Ar / bal CO₂ preferred); keep hydrogen low, preheat/interpass per the Q&T base metal (typically 50–150 °C, interpass ≤200 °C) and cap heat input to protect HAZ toughness.
Can E110C-K3 be formed, bent or molded?
Not a wrought product — the wire is drawn and formed by the maker; the deposit itself has limited cold formability at 760 MPa yield.
What surface finishes work on E110C-K3?
Grind/blast to remove silicon islands and slag film, then zinc-rich primer or paint; no anodizing, avoid electroplating without bake-out to prevent hydrogen embrittlement.
E110C-K3 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, AWS A5.28 K3 | ≤ 0.15 | 0.06 |
| Mn | 0.75 – 2.25 | 1.5 |
| Si | ≤ 0.8 | 0.45 |
| Ni | 1.25 – 2.6 | 2 |
| Cr | ≤ 0.15 | 0.05 |
| Mo | 0.25 – 0.65 | 0.45 |
| V | ≤ 0.05 | 0.01 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.03 | 0.01 |
| Cuincluding any coating | ≤ 0.35 | 0.05 |
| Fe | balance | — |
E110C-K3 PWHT — frequently asked
What is E110C-K3 PWHT used for?
E110C-K3 PWHT is typically used for HY-100 steel welding, high-strength ship hull structures, pressure vessel repair and heavy crane structures. In short: 110 ksi weld deposit; HY-100 matching filler; highest-strength K3 wire.
What is the yield strength of E110C-K3 PWHT?
E110C-K3 PWHT has a typical yield strength of 670 MPa (97.2 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 80% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is E110C-K3 PWHT easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 65% of steel grades). As-welded deposit is ~24 HRC; machine with carbide at moderate speed or stress-relieve first to ease cutting and reduce distortion.
Can E110C-K3 PWHT be welded?
Yes — weldability is rated excellent (90/100). DCEP, gas-shielded metal-cored (75-80 % Ar / bal CO₂ preferred); keep hydrogen low, preheat/interpass per the Q&T base metal (typically 50–150 °C, interpass ≤200 °C) and cap heat input to protect HAZ toughness.
What surface finishes work on E110C-K3 PWHT?
Grind/blast to remove silicon islands and slag film, then zinc-rich primer or paint; no anodizing, avoid electroplating without bake-out to prevent hydrogen embrittlement.
Can E110C-K3 PWHT be formed, bent or molded?
Not a wrought product — the wire is drawn and formed by the maker; the deposit itself has limited cold formability at 760 MPa yield.
What is the maximum service temperature of E110C-K3 PWHT?
E110C-K3 PWHT 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 E110C-K3-AW and E110C-K3 PWHT?
AW is the default condition — standard classification condition — deposit used as welded on Q&T high-strength steels; best combination of 110 ksi strength and low-temperature toughness. PWHT: use when the fabrication code mandates stress relief; residual stress and hardness drop but so does tensile strength — verify the joint still meets the 110 ksi design basis. Yield strength is 720 MPa in AW versus 670 MPa in PWHT.
Sources
- AWS A5.28/A5.28M — Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding — American Welding Society (2020)
- AWS A5.29/A5.29M — Low-Alloy Steel Electrodes for Flux Cored Arc Welding (K3 chemistry cross-reference) — American Welding Society (2020)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Metal-cored 110 ksi Ni-Mo electrode datasheets (Lincoln Electric, ESAB, Böhler Welding) — various (2023)
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.