Cobalt-Chrome Alloy Stellite 3 vs Tribaloy T-800
Cobalt-Chrome Alloy · grade comparison
Cobalt-Chrome Alloy Stellite 3 and Tribaloy T-800 are both cobalt-chrome alloy grades. Stellite 3 is the stronger of the two: yield strength 600 MPa (87 ksi) against 480 MPa (69.6 ksi) for Tribaloy T-800, about 25% more; tensile strength follows at 620 MPa (89.9 ksi) vs 500 MPa (72.5 ksi). Stellite 3 is the more ductile: elongation 0.5% versus 0.3% for Tribaloy T-800, and Tribaloy T-800 is harder (58 HRC vs 55 HRC). Stellite 3 conducts heat better (14.5 W/m·K vs 12 W/m·K).
Stellite 3Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Stellite 3 vs Tribaloy T-800: 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Poisson's Ratio
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 C
Hardness, Vickers
Bulk Modulus
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 8.6 g/cm³0.31 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Min Service Temperature
Same in both: Specific Heat Capacity 420 J/kg·K0.1 BTU/lb·°F · Max Service Temperature (continuous) 800°C1,472 °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) -0.25 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Castability
Brazeability / Solderability
Polishability
Same in both: Machinability 4 / 100 · Machinability Rating (AISI 1212 = 100 %) 3% · Weldability 20 / 100 · Formability (cold) 2 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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.
Manufacturing and finishing
| Capability | Stellite 3 | Tribaloy T-800 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Stellite 3 vs Tribaloy T-800 — frequently asked
Is Stellite 3 stronger than Tribaloy T-800?
Yes. Stellite 3 has a typical yield strength of 600 MPa (87 ksi) against 480 MPa (69.6 ksi) for Tribaloy T-800 — about 25% more. Tensile strength is 620 MPa (89.9 ksi) vs 500 MPa (72.5 ksi).
Which is cheaper, Stellite 3 or Tribaloy T-800?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose Stellite 3 over Tribaloy T-800?
Pick Stellite 3 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 3 and Tribaloy T-800 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.