Stainless Steel S33425-CD vs S33425 CW-1/4H
Stainless Steel · S33425 temper comparison
S33425-CD and S33425 CW-1/4H are two conditions of the same stainless steel grade, S33425: CD (cold drawn) versus CW-1/4H (cold worked 1/4-hard). The chemistry is identical, so every difference below comes from the condition. S33425 CW-1/4H is the stronger of the two: yield strength 590 MPa (85.6 ksi) against 500 MPa (72.5 ksi) for S33425-CD, about 18% more; tensile strength follows at 790 MPa (115 ksi) vs 720 MPa (104 ksi). In exchange, S33425-CD is the more ductile: elongation 25% versus 20% for S33425 CW-1/4H, and S33425 CW-1/4H is harder (230 HB vs 210 HB). S33425-CD runs hotter in service (1,150°C vs 425°C continuous).
S33425-CDChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
S33425 CW-1/4HChoose it when strength drives the design.
S33425-CD vs S33425 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
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 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) 1,370°C2,498 °F · Liquidus Temperature 1,425°C2,597 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
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 270 J/g116 BTU/lb · 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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 56 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Same in both: Machinability 33 / 100 · Formability (cold) 45 / 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) 6.8 kg CO₂/kg · Embodied Water 120 L/kg14.4 gal/lb · Typical Recycled Content 45%
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.
S33425-CD vs S33425 CW-1/4H — frequently asked
Is S33425 CW-1/4H stronger than S33425-CD?
Yes. S33425 CW-1/4H has a typical yield strength of 590 MPa (85.6 ksi) against 500 MPa (72.5 ksi) for S33425-CD — about 18% more. Tensile strength is 790 MPa (115 ksi) vs 720 MPa (104 ksi).
Which condition does FabDigit quote by default, CD or CW-1/4H?
Annealed is the default S33425 condition in the FabDigit quote flow (neither CD nor CW-1/4H). 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 S33425-CD over S33425 CW-1/4H?
Pick S33425-CD when the part is bent, formed or impact-loaded, or when the part sees heat. Pick S33425 CW-1/4H when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in S33425-CD and S33425 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.