Cobalt-Chrome Alloy F90 Cold Worked vs F90 Solution Annealed
Cobalt-Chrome Alloy · F90 temper comparison
F90 Cold Worked and F90 Solution Annealed are two conditions of the same cobalt-chrome alloy grade, F90: Cold Worked versus Solution Annealed. The chemistry is identical, so every difference below comes from the condition. F90 Cold Worked is the stronger of the two: yield strength 1,200 MPa (174 ksi) against 460 MPa (66.7 ksi) for F90 Solution Annealed, about 161% more; tensile strength follows at 1,500 MPa (218 ksi) vs 1,000 MPa (145 ksi). In exchange, F90 Solution Annealed is the more ductile: elongation 55% versus 15% for F90 Cold Worked, and F90 Cold Worked is harder (440 HV vs 250 HV). F90 Solution Annealed runs hotter in service (980°C vs 400°C continuous). On the shop floor, F90 Solution Annealed welds better (very good vs good).
F90 Cold WorkedChoose it when strength drives the design.
F90 Solution AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
F90 Cold Worked vs F90 Solution Annealed: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all cobalt-chrome alloy 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 cobalt-chrome alloy 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.
F90 Cold WorkedF90 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 225 GPa32.6 Msi · Shear Modulus 87 GPa12.6 Msi · Bulk Modulus 180 GPa26.1 Msi · Poisson's Ratio 0.29 · Shear Strength 620 MPa89.9 ksi · Fracture Toughness (K_IC) 100 MPa·√m91 ksi·√in · Hardness, Brinell 240 HB · Hardness, Rockwell B 96 HRB
Physical
Density and transition temperatures.
Same in both: Density 9.13 g/cm³0.33 lb/in³ · Melting Point (Solidus) 1,330°C2,426 °F · Liquidus Temperature 1,410°C2,570 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 9.6 W/m·K5.5 BTU/hr·ft·°F · Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.3 µm/m·K6.8 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 1.9 % IACS · Electrical Resistivity 8.9×10⁻⁷ Ω·m35 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.18 V · Corrosion Resistance 84 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Brazeability / Solderability 60 / 100 · Polishability 88 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 250 MJ/kg107,481 BTU/lb · Embodied Carbon (primary production) 18 kg CO₂/kg · Embodied Water 400 L/kg47.9 gal/lb · Typical Recycled Content 25%
Strength versus weight
Yield strength against density for every cobalt-chrome alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
F90 Cold Worked vs F90 Solution Annealed — frequently asked
Is F90 Cold Worked stronger than F90 Solution Annealed?
Yes. F90 Cold Worked has a typical yield strength of 1,200 MPa (174 ksi) against 460 MPa (66.7 ksi) for F90 Solution Annealed — about 161% more. Tensile strength is 1,500 MPa (218 ksi) vs 1,000 MPa (145 ksi).
Which condition does FabDigit quote by default, Cold Worked or Solution Annealed?
Solution Annealed is the default F90 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, F90 Cold Worked or F90 Solution Annealed?
F90 Solution Annealed. Its weldability rates very good (70/100) against good (55/100) for F90 Cold Worked.
Ready to make it?
Upload a CAD file and FabDigit prices the part in F90 Cold Worked and F90 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.