Steel E110C-K4-AW vs E110C-K4 PWHT
Steel · E110C-K4 temper comparison
E110C-K4-AW and E110C-K4 PWHT are two conditions of the same steel grade, E110C-K4: AW (as-welded deposit) versus PWHT (post-weld heat treated). The chemistry is identical, so every difference below comes from the condition. E110C-K4-AW is the stronger of the two: yield strength 745 MPa (108 ksi) against 695 MPa (101 ksi) for E110C-K4 PWHT, about 7% more; tensile strength follows at 830 MPa (120 ksi) vs 785 MPa (114 ksi). In exchange, E110C-K4 PWHT is the more ductile: elongation 22% versus 19% for E110C-K4-AW, and E110C-K4-AW is harder (255 HB vs 235 HB). E110C-K4 PWHT runs hotter in service (450°C vs 400°C continuous).
E110C-K4-AWChoose it when strength drives the design.
E110C-K4 PWHTChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
E110C-K4-AW vs E110C-K4 PWHT: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 745 MPa108 ksi · Shear Strength 500 MPa72.5 ksi · Fatigue Strength (Endurance Limit) 340 MPa49.3 ksi · Fracture Toughness (K_IC) 120 MPa·√m109 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 7.83 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,450°C2,642 °F · Liquidus Temperature 1,505°C2,741 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 40 W/m·K23.1 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.3 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -51°C-60 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 2.4×10⁻⁷ Ω·m9.45 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.62 V · Corrosion Resistance 16 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Same in both: Machinability 42 / 100 · Weldability 85 / 100 · Formability (cold) 30 / 100 · Brazeability / Solderability 50 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 38 MJ/kg16,337 BTU/lb · Embodied Carbon (primary production) 2.8 kg CO₂/kg · Embodied Water 70 L/kg8.4 gal/lb · Typical Recycled Content 25%
Strength versus weight
Yield strength against density for every steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
E110C-K4-AW vs E110C-K4 PWHT — frequently asked
Is E110C-K4-AW stronger than E110C-K4 PWHT?
Yes. E110C-K4-AW has a typical yield strength of 745 MPa (108 ksi) against 695 MPa (101 ksi) for E110C-K4 PWHT — about 7% more. Tensile strength is 830 MPa (120 ksi) vs 785 MPa (114 ksi).
Which condition does FabDigit quote by default, AW or PWHT?
AW is the default E110C-K4 condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose E110C-K4-AW over E110C-K4 PWHT?
Pick E110C-K4-AW when strength drives the design. Pick E110C-K4 PWHT when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in E110C-K4-AW and E110C-K4 PWHT side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.