Steel ER80S-Ni2-AW vs ER80S-Ni2 PWHT
Steel · ER80S-Ni2 temper comparison
ER80S-Ni2-AW and ER80S-Ni2 PWHT are two conditions of the same steel grade, ER80S-Ni2: AW (as-welded deposit) versus PWHT (post-weld heat treated). The chemistry is identical, so every difference below comes from the condition. ER80S-Ni2-AW is the stronger of the two: yield strength 510 MPa (74 ksi) against 480 MPa (69.6 ksi) for ER80S-Ni2 PWHT, about 6% more; tensile strength follows at 600 MPa (87 ksi) vs 570 MPa (82.7 ksi). ER80S-Ni2-AW is harder — 195 HB against 180 HB for ER80S-Ni2 PWHT — which matters for wear surfaces and threads.
ER80S-Ni2-AWChoose it when strength drives the design, or when surface hardness matters.
ER80S-Ni2-AW vs ER80S-Ni2 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, Rockwell B
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 · Shear Strength 370 MPa53.7 ksi · Fatigue Strength (Endurance Limit) 260 MPa37.7 ksi
Physical
Density and transition temperatures.
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,460°C2,660 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Thermal Conductivity 39 W/m·K22.5 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb
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 13 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Same in both: Machinability 55 / 100 · Machinability Rating (AISI 1212 = 100 %) 60% · Weldability 88 / 100 · Formability (cold) 55 / 100 · Brazeability / Solderability 70 / 100 · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.6 kg CO₂/kg · Embodied Water 60 L/kg7.2 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.
ER80S-Ni2-AW vs ER80S-Ni2 PWHT — frequently asked
Is ER80S-Ni2-AW stronger than ER80S-Ni2 PWHT?
Yes. ER80S-Ni2-AW has a typical yield strength of 510 MPa (74 ksi) against 480 MPa (69.6 ksi) for ER80S-Ni2 PWHT — about 6% more. Tensile strength is 600 MPa (87 ksi) vs 570 MPa (82.7 ksi).
Which condition does FabDigit quote by default, AW or PWHT?
AW is the default ER80S-Ni2 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 ER80S-Ni2-AW over ER80S-Ni2 PWHT?
Pick ER80S-Ni2-AW when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ER80S-Ni2-AW and ER80S-Ni2 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.