Steel E80C-B8-AW vs E80C-B8 PWHT
Steel · E80C-B8 temper comparison
E80C-B8-AW and E80C-B8 PWHT are two conditions of the same steel grade, E80C-B8: AW (as-welded deposit) versus PWHT (post-weld heat treated). The chemistry is identical, so every difference below comes from the condition. E80C-B8-AW is the stronger of the two: yield strength 760 MPa (110 ksi) against 505 MPa (73.2 ksi) for E80C-B8 PWHT, about 50% more; tensile strength follows at 980 MPa (142 ksi) vs 620 MPa (89.9 ksi). In exchange, E80C-B8 PWHT is the more ductile: elongation 22% versus 13% for E80C-B8-AW, and E80C-B8-AW is harder (375 HB vs 200 HB). E80C-B8 PWHT runs hotter in service (600°C vs 400°C continuous).
E80C-B8-AWChoose it when strength drives the design.
E80C-B8 PWHTChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
E80C-B8-AW vs E80C-B8 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, Vickers
Same in both: Elastic (Young's) Modulus 213 GPa30.9 Msi · Shear Modulus 82 GPa11.9 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.3 · Shear Strength 400 MPa58 ksi · Fatigue Strength (Endurance Limit) 280 MPa40.6 ksi · Fracture Toughness (K_IC) 100 MPa·√m91 ksi·√in · Hardness, Rockwell B 93 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.78 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,500°C2,732 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 28 W/m·K16.2 BTU/hr·ft·°F · Specific Heat Capacity 480 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.2 µm/m·K6.2 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.45 V · Corrosion Resistance 32 / 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 50 / 100 · Formability (cold) 30 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 32 MJ/kg13,758 BTU/lb · Embodied Carbon (primary production) 2.6 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.
E80C-B8-AW vs E80C-B8 PWHT — frequently asked
Is E80C-B8-AW stronger than E80C-B8 PWHT?
Yes. E80C-B8-AW has a typical yield strength of 760 MPa (110 ksi) against 505 MPa (73.2 ksi) for E80C-B8 PWHT — about 50% more. Tensile strength is 980 MPa (142 ksi) vs 620 MPa (89.9 ksi).
Which condition does FabDigit quote by default, AW or PWHT?
PWHT is the default E80C-B8 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 E80C-B8-AW over E80C-B8 PWHT?
Pick E80C-B8-AW when strength drives the design. Pick E80C-B8 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 E80C-B8-AW and E80C-B8 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.