Stainless Steel ER330 AW-GTAW vs ER330-CD
Stainless Steel · ER330 temper comparison
ER330 AW-GTAW and ER330-CD are two conditions of the same stainless steel grade, ER330: AW-GTAW (as welded, GTAW/TIG deposit) versus CD (cold drawn). The chemistry is identical, so every difference below comes from the condition. ER330-CD is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 390 MPa (56.6 ksi) for ER330 AW-GTAW, about 59% more; tensile strength follows at 800 MPa (116 ksi) vs 590 MPa (85.6 ksi). In exchange, ER330 AW-GTAW is the more ductile: elongation 33% versus 12% for ER330-CD, and ER330-CD is harder (245 HB vs 190 HB).
ER330 AW-GTAWChoose it when the part is bent, formed or impact-loaded.
ER330-CDChoose it when strength drives the design.
ER330 AW-GTAW vs ER330-CD: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 196 GPa28.4 Msi · Shear Modulus 76 GPa11 Msi · Bulk Modulus 155 GPa22.5 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.94 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,350°C2,462 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 12.5 W/m·K7.2 BTU/hr·ft·°F · Specific Heat Capacity 480 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.6 µm/m·K8.1 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Max Service Temperature (continuous) 1,100°C2,012 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.7 % IACS · Electrical Resistivity 1.02×10⁻⁶ Ω·m40.2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 60 / 100 · Brazeability / Solderability 55 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 90 MJ/kg38,693 BTU/lb · Embodied Carbon (primary production) 6.5 kg CO₂/kg · Embodied Water 160 L/kg19.2 gal/lb · Typical Recycled Content 40%
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.
ER330 AW-GTAW vs ER330-CD — frequently asked
Is ER330-CD stronger than ER330 AW-GTAW?
Yes. ER330-CD has a typical yield strength of 620 MPa (89.9 ksi) against 390 MPa (56.6 ksi) for ER330 AW-GTAW — about 59% more. Tensile strength is 800 MPa (116 ksi) vs 590 MPa (85.6 ksi).
Which condition does FabDigit quote by default, AW-GTAW or CD?
AW is the default ER330 condition in the FabDigit quote flow (neither AW-GTAW nor CD). 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 ER330 AW-GTAW over ER330-CD?
Pick ER330 AW-GTAW when the part is bent, formed or impact-loaded. Pick ER330-CD when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ER330 AW-GTAW and ER330-CD 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.