Stainless Steel 330 Annealed vs 330 Hot Finished
Stainless Steel · 330 temper comparison
330 Annealed and 330 Hot Finished are two conditions of the same stainless steel grade, 330: Annealed versus Hot Finished (hot rolled/forged bar and plate, annealed after hot work). The chemistry is identical, so every difference below comes from the condition. 330 Hot Finished is the stronger of the two: yield strength 290 MPa (42.1 ksi) against 250 MPa (36.3 ksi) for 330 Annealed, about 16% more; tensile strength follows at 600 MPa (87 ksi) vs 565 MPa (81.9 ksi). In exchange, 330 Annealed is the more ductile: elongation 45% versus 40% for 330 Hot Finished, and 330 Hot Finished is harder (160 HB vs 145 HB).
330 AnnealedChoose it when the part is bent, formed or impact-loaded.
330 Hot FinishedChoose it when strength drives the design.
330 Annealed vs 330 Hot Finished: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 196 GPa28.4 Msi · Shear Modulus 76 GPa11 Msi · Bulk Modulus 156 GPa22.6 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) 1,370°C2,498 °F · Liquidus Temperature 1,425°C2,597 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 12.6 W/m·K7.3 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.4 µm/m·K8 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Max Service Temperature (continuous) 1,150°C2,102 °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) -0.1 V · Corrosion Resistance 62 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Machinability 30 / 100 · Weldability 62 / 100 · Castability 45 / 100 · Brazeability / Solderability 60 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 95 MJ/kg40,843 BTU/lb · Embodied Carbon (primary production) 7.5 kg CO₂/kg · Embodied Water 180 L/kg21.6 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.
330 Annealed vs 330 Hot Finished — frequently asked
Is 330 Hot Finished stronger than 330 Annealed?
Yes. 330 Hot Finished has a typical yield strength of 290 MPa (42.1 ksi) against 250 MPa (36.3 ksi) for 330 Annealed — about 16% more. Tensile strength is 600 MPa (87 ksi) vs 565 MPa (81.9 ksi).
Which condition does FabDigit quote by default, Annealed or Hot Finished?
Solution Annealed is the default 330 condition in the FabDigit quote flow (neither Annealed nor Hot Finished). 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 330 Annealed over 330 Hot Finished?
Pick 330 Annealed when the part is bent, formed or impact-loaded. Pick 330 Hot Finished when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 330 Annealed and 330 Hot Finished 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.