Stainless Steel 347 Annealed vs 347 Cold Drawn
Stainless Steel · 347 temper comparison
347 Annealed and 347 Cold Drawn are two conditions of the same stainless steel grade, 347: Annealed versus Cold Drawn. The chemistry is identical, so every difference below comes from the condition. 347 Cold Drawn is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 240 MPa (34.8 ksi) for 347 Annealed, about 129% more; tensile strength follows at 760 MPa (110 ksi) vs 600 MPa (87 ksi). In exchange, 347 Annealed is the more ductile: elongation 48% versus 25% for 347 Cold Drawn, and 347 Cold Drawn is harder (240 HB vs 155 HB). 347 Annealed runs hotter in service (870°C vs 425°C continuous).
347 AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
347 Cold DrawnChoose it when strength drives the design.
347 Annealed vs 347 Cold Drawn: 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 193 GPa28 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.96 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °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 16 W/m·K9.2 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.6 µm/m·K9.2 µin/in·°F · Latent Heat of Fusion 280 J/g120 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.4 % IACS · Electrical Resistivity 7.3×10⁻⁷ Ω·m28.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.08 V · Corrosion Resistance 66 / 100
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 70 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 57 MJ/kg24,506 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 140 L/kg16.8 gal/lb · Typical Recycled Content 60%
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.
347 Annealed vs 347 Cold Drawn — frequently asked
Is 347 Cold Drawn stronger than 347 Annealed?
Yes. 347 Cold Drawn has a typical yield strength of 550 MPa (79.8 ksi) against 240 MPa (34.8 ksi) for 347 Annealed — about 129% more. Tensile strength is 760 MPa (110 ksi) vs 600 MPa (87 ksi).
Which condition does FabDigit quote by default, Annealed or Cold Drawn?
Solution Annealed is the default 347 condition in the FabDigit quote flow (neither Annealed nor Cold Drawn). 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 347 Annealed over 347 Cold Drawn?
Pick 347 Annealed when the part is bent, formed or impact-loaded, or when the part sees heat. Pick 347 Cold Drawn when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 347 Annealed and 347 Cold Drawn 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.