Cobalt-Chrome Alloy Stellite 12 Cast vs Stellite 12-HIP
Cobalt-Chrome Alloy · Stellite 12 temper comparison
Stellite 12 Cast and Stellite 12-HIP are two conditions of the same cobalt-chrome alloy grade, Stellite 12: Cast (as cast) versus HIP (hot isostatic pressed). The chemistry is identical, so every difference below comes from the condition. Stellite 12-HIP is the stronger of the two: yield strength 700 MPa (102 ksi) against 650 MPa (94.3 ksi) for Stellite 12 Cast, about 8% more; tensile strength follows at 900 MPa (131 ksi) vs 830 MPa (120 ksi). Stellite 12-HIP is the more ductile: elongation 2% versus 1% for Stellite 12 Cast, and Stellite 12-HIP is harder (515 HV vs 485 HV).
Stellite 12-HIPChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Stellite 12 Cast vs Stellite 12-HIP: 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.
Stellite 12 CastStellite 12-HIP
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 89 GPa12.9 Msi · Bulk Modulus 175 GPa25.4 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 8.6 g/cm³0.31 lb/in³ · Melting Point (Solidus) 1,280°C2,336 °F · Liquidus Temperature 1,315°C2,399 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 14.5 W/m·K8.4 BTU/hr·ft·°F · Specific Heat Capacity 420 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.8 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 800°C1,472 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2 % IACS · Electrical Resistivity 8.8×10⁻⁷ Ω·m34.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Same in both: Machinability 8 / 100 · Machinability Rating (AISI 1212 = 100 %) 5% · Weldability 35 / 100 · Formability (cold) 3 / 100 · Castability 70 / 100 · Brazeability / Solderability 45 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 150 MJ/kg64,488 BTU/lb · Embodied Carbon (primary production) 13 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.
Stellite 12 Cast vs Stellite 12-HIP — frequently asked
Is Stellite 12-HIP stronger than Stellite 12 Cast?
Yes. Stellite 12-HIP has a typical yield strength of 700 MPa (102 ksi) against 650 MPa (94.3 ksi) for Stellite 12 Cast — about 8% more. Tensile strength is 900 MPa (131 ksi) vs 830 MPa (120 ksi).
Which condition does FabDigit quote by default, Cast or HIP?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
When should I choose Stellite 12 Cast over Stellite 12-HIP?
Pick Stellite 12-HIP when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Stellite 12 Cast and Stellite 12-HIP 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.