Stainless Steel E430-AW vs E430 PWHT
Stainless Steel · E430 temper comparison
E430-AW and E430 PWHT are two conditions of the same stainless steel grade, E430: AW (as-welded deposit) versus PWHT (post-weld heat treated). The chemistry is identical, so every difference below comes from the condition. E430-AW is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 380 MPa (55.1 ksi) for E430 PWHT, about 24% more; tensile strength follows at 590 MPa (85.6 ksi) vs 500 MPa (72.5 ksi). In exchange, E430 PWHT is the more ductile: elongation 24% versus 10% for E430-AW, and E430-AW is harder (240 HB vs 175 HB). E430 PWHT runs hotter in service (800°C vs 700°C continuous). On the shop floor, E430 PWHT machines more easily (48 vs 38 out of 100).
E430-AWChoose it when strength drives the design.
E430 PWHTChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
E430-AW vs E430 PWHT: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless 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 stainless 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 7.7 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.4 µm/m·K5.8 µin/in·°F · Latent Heat of Fusion 275 J/g118 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.3 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 38 MJ/kg16,337 BTU/lb · Embodied Carbon (primary production) 3 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 65%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
E430-AW vs E430 PWHT — frequently asked
Is E430-AW stronger than E430 PWHT?
Yes. E430-AW has a typical yield strength of 470 MPa (68.2 ksi) against 380 MPa (55.1 ksi) for E430 PWHT — about 24% more. Tensile strength is 590 MPa (85.6 ksi) vs 500 MPa (72.5 ksi).
Which condition does FabDigit quote by default, AW or PWHT?
E430-16 is the default E430 condition in the FabDigit quote flow (neither AW nor PWHT). 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.
Which is easier to machine, E430-AW or E430 PWHT?
E430 PWHT, by a small margin. Both rate fair for machinability — 48/100 against 38/100 for E430-AW; for welding the order is E430 PWHT first (good, 58/100) then E430-AW (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in E430-AW and E430 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.