Cobalt-Chrome Alloy Stellite 6B vs Tribaloy T-400
Cobalt-Chrome Alloy · grade comparison
Cobalt-Chrome Alloy Stellite 6B and Tribaloy T-400 are both cobalt-chrome alloy grades. Stellite 6B is the stronger of the two: tensile strength 1,000 MPa (145 ksi) against 690 MPa (100 ksi) for Tribaloy T-400, about 45% more. Stellite 6B is the more ductile: elongation 8% versus 0.5% for Tribaloy T-400, and Tribaloy T-400 is harder (600 HB vs 360 HB). On the shop floor, Tribaloy T-400 welds better (fair vs poor).
Stellite 6BChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Tribaloy T-400Choose it when it will be welded.
Stellite 6B vs Tribaloy T-400: 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
Bulk Modulus
Tensile Strength (Ultimate)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Fracture Toughness (K_IC)
Same in both: Shear Modulus 88 GPa12.8 Msi · Poisson's Ratio 0.3 · Yield Strength (0.2% offset) 620 MPa89.9 ksi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 400 L/kg47.9 gal/lb
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 6B | Tribaloy T-400 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Stellite 6B vs Tribaloy T-400 — frequently asked
Is Stellite 6B stronger than Tribaloy T-400?
Yes. Stellite 6B has a typical tensile strength of 1,000 MPa (145 ksi) against 690 MPa (100 ksi) for Tribaloy T-400 — about 45% more.
Which is cheaper, Stellite 6B or Tribaloy T-400?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Stellite 6B or Tribaloy T-400?
Tribaloy T-400. Its weldability rates fair (35/100) against poor (25/100) for Stellite 6B.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Stellite 6B and Tribaloy T-400 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.