Stainless Steel S44330-ANN vs S44330 CW-1/4H
Stainless Steel · S44330 temper comparison
S44330-ANN and S44330 CW-1/4H are two conditions of the same stainless steel grade, S44330: ANN (annealed) versus CW-1/4H (1/4 Hard). The chemistry is identical, so every difference below comes from the condition. S44330 CW-1/4H is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 310 MPa (45 ksi) for S44330-ANN, about 68% more; tensile strength follows at 620 MPa (89.9 ksi) vs 480 MPa (69.6 ksi). In exchange, S44330-ANN is the more ductile: elongation 30% versus 12% for S44330 CW-1/4H, and S44330 CW-1/4H is harder (200 HB vs 160 HB). S44330-ANN runs hotter in service (870°C vs 760°C continuous).
S44330-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
S44330 CW-1/4HChoose it when strength drives the design.
S44330-ANN vs S44330 CW-1/4H: 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 78 GPa11.3 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
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 1,505°C2,741 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F · 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 270 J/g116 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.9 % IACS · Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
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 65 / 100 · Polishability 62 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 50 MJ/kg21,496 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 180 L/kg21.6 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.
S44330-ANN vs S44330 CW-1/4H — frequently asked
Is S44330 CW-1/4H stronger than S44330-ANN?
Yes. S44330 CW-1/4H has a typical yield strength of 520 MPa (75.4 ksi) against 310 MPa (45 ksi) for S44330-ANN — about 68% more. Tensile strength is 620 MPa (89.9 ksi) vs 480 MPa (69.6 ksi).
Which condition does FabDigit quote by default, ANN or CW-1/4H?
ANN is the default S44330 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.
Which is easier to machine, S44330-ANN or S44330 CW-1/4H?
S44330 CW-1/4H, by a small margin. Both rate good for machinability — 60/100 against 55/100 for S44330-ANN; for welding the order is S44330-ANN first (very good, 78/100) then S44330 CW-1/4H (very good, 72/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in S44330-ANN and S44330 CW-1/4H 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.