Stainless Steel 660 Cold Drawn vs 660 Solution Annealed
Stainless Steel · 660 temper comparison
660 Cold Drawn and 660 Solution Annealed are two conditions of the same stainless steel grade, 660: Cold Drawn versus Solution Annealed. The chemistry is identical, so every difference below comes from the condition. 660 Cold Drawn is the stronger of the two: yield strength 700 MPa (102 ksi) against 310 MPa (45 ksi) for 660 Solution Annealed, about 126% more; tensile strength follows at 900 MPa (131 ksi) vs 690 MPa (100 ksi). In exchange, 660 Solution Annealed is the more ductile: elongation 40% versus 18% for 660 Cold Drawn, and 660 Cold Drawn is harder (240 HB vs 160 HB). 660 Solution Annealed runs hotter in service (540°C vs 480°C continuous). On the shop floor, 660 Solution Annealed welds better (good vs fair).
660 Cold DrawnChoose it when strength drives the design.
660 Solution AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
660 Cold Drawn vs 660 Solution Annealed: 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.
660 Cold Drawn660 Solution Annealed
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 201 GPa29.2 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 176 GPa25.5 Msi · Poisson's Ratio 0.31
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 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 13.4 W/m·K7.7 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.6 µm/m·K9.2 µin/in·°F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.9 % IACS · Electrical Resistivity 9.1×10⁻⁷ Ω·m35.8 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
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 50 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 95 MJ/kg40,843 BTU/lb · Embodied Carbon (primary production) 6.8 kg CO₂/kg · Embodied Water 200 L/kg24 gal/lb · Typical Recycled Content 30%
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.
660 Cold Drawn vs 660 Solution Annealed — frequently asked
Is 660 Cold Drawn stronger than 660 Solution Annealed?
Yes. 660 Cold Drawn has a typical yield strength of 700 MPa (102 ksi) against 310 MPa (45 ksi) for 660 Solution Annealed — about 126% more. Tensile strength is 900 MPa (131 ksi) vs 690 MPa (100 ksi).
Which condition does FabDigit quote by default, Cold Drawn or Solution Annealed?
Solution Annealed is the default 660 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 welds better, 660 Cold Drawn or 660 Solution Annealed?
660 Solution Annealed. Its weldability rates good (55/100) against fair (45/100) for 660 Cold Drawn.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 660 Cold Drawn and 660 Solution Annealed 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.