Steel E90C-B3-AW vs E90C-B3 PWHT
Steel · E90C-B3 temper comparison
E90C-B3-AW and E90C-B3 PWHT are two conditions of the same steel grade, E90C-B3: AW (as-welded deposit) versus PWHT (post-weld heat treated). The chemistry is identical, so every difference below comes from the condition. E90C-B3-AW is the stronger of the two: yield strength 760 MPa (110 ksi) against 590 MPa (85.6 ksi) for E90C-B3 PWHT, about 29% more; tensile strength follows at 880 MPa (128 ksi) vs 690 MPa (100 ksi). In exchange, E90C-B3 PWHT is the more ductile: elongation 22% versus 15% for E90C-B3-AW, and E90C-B3-AW is harder (310 HB vs 205 HB). E90C-B3 PWHT runs hotter in service (565°C vs 400°C continuous).
E90C-B3-AWChoose it when strength drives the design.
E90C-B3 PWHTChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
E90C-B3-AW vs E90C-B3 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
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 590 MPa85.6 ksi · Shear Strength 430 MPa62.4 ksi · Fatigue Strength (Endurance Limit) 310 MPa45 ksi · Hardness, Rockwell B 94 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,450°C2,642 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 37 W/m·K21.4 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.4 µm/m·K6.9 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8 % IACS · Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 18 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Same in both: Machinability 45 / 100 · Weldability 55 / 100 · Formability (cold) 35 / 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) 2.4 kg CO₂/kg · Embodied Water 55 L/kg6.6 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.
E90C-B3-AW vs E90C-B3 PWHT — frequently asked
Is E90C-B3-AW stronger than E90C-B3 PWHT?
Yes. E90C-B3-AW has a typical yield strength of 760 MPa (110 ksi) against 590 MPa (85.6 ksi) for E90C-B3 PWHT — about 29% more. Tensile strength is 880 MPa (128 ksi) vs 690 MPa (100 ksi).
Which condition does FabDigit quote by default, AW or PWHT?
PWHT is the default E90C-B3 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 E90C-B3-AW over E90C-B3 PWHT?
Pick E90C-B3-AW when strength drives the design. Pick E90C-B3 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 E90C-B3-AW and E90C-B3 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.