Stainless Steel ER330-CD vs ER330-SA
Stainless Steel · ER330 temper comparison
ER330-CD and ER330-SA are two conditions of the same stainless steel grade, ER330: CD (cold drawn) versus SA (weld metal solution annealed ~1090 °C, rapid cooled). 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 265 MPa (38.4 ksi) for ER330-SA, about 134% more; tensile strength follows at 800 MPa (116 ksi) vs 550 MPa (79.8 ksi). In exchange, ER330-SA is the more ductile: elongation 42% versus 12% for ER330-CD, and ER330-CD is harder (245 HB vs 160 HB).
ER330-CDChoose it when strength drives the design.
ER330-SAChoose it when the part is bent, formed or impact-loaded.
ER330-CD vs ER330-SA: 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.
Thermal Conductivity
Same in both: 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.
Electrical Resistivity
Same in both: Electrical Conductivity 1.7 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 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 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-CD vs ER330-SA — frequently asked
Is ER330-CD stronger than ER330-SA?
Yes. ER330-CD has a typical yield strength of 620 MPa (89.9 ksi) against 265 MPa (38.4 ksi) for ER330-SA — about 134% more. Tensile strength is 800 MPa (116 ksi) vs 550 MPa (79.8 ksi).
Which condition does FabDigit quote by default, CD or SA?
AW is the default ER330 condition in the FabDigit quote flow (neither CD nor SA). 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, ER330-CD or ER330-SA?
ER330-SA, by a small margin. Both rate poor for machinability — 28/100 against 22/100 for ER330-CD.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ER330-CD and ER330-SA 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.