Stainless Steel CF3M-AC vs CF3M-AW
Stainless Steel · CF3M temper comparison
CF3M-AC and CF3M-AW are two conditions of the same stainless steel grade, CF3M: AC (spheroidize annealed) versus AW (as-welded deposit). The chemistry is identical, so every difference below comes from the condition. CF3M-AW is the stronger of the two: yield strength 340 MPa (49.3 ksi) against 265 MPa (38.4 ksi) for CF3M-AC, about 28% more; tensile strength follows at 550 MPa (79.8 ksi) vs 510 MPa (74 ksi). CF3M-AW is harder — 180 HB against 165 HB for CF3M-AC — which matters for wear surfaces and threads.
CF3M-AWChoose it when strength drives the design, or when surface hardness matters.
CF3M-AC vs CF3M-AW: 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.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
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: Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 145 GPa21 Msi · Poisson's Ratio 0.3 · Elongation at Break 35% · Reduction in Area 40%
Physical
Density and transition temperatures.
Same in both: Density 7.9 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,390°C2,534 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16 µm/m·K8.9 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Same in both: Castability 80 / 100 · Brazeability / Solderability 50 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb · Embodied Carbon (primary production) 4.5 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 75%
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.
CF3M-AC vs CF3M-AW — frequently asked
Is CF3M-AW stronger than CF3M-AC?
Yes. CF3M-AW has a typical yield strength of 340 MPa (49.3 ksi) against 265 MPa (38.4 ksi) for CF3M-AC — about 28% more. Tensile strength is 550 MPa (79.8 ksi) vs 510 MPa (74 ksi).
Which condition does FabDigit quote by default, AC or AW?
SA is the default CF3M condition in the FabDigit quote flow (neither AC nor AW). 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 welds better, CF3M-AC or CF3M-AW?
CF3M-AW. Its weldability rates excellent (85/100) against very good (80/100) for CF3M-AC.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CF3M-AC and CF3M-AW 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.