Cobalt-Chrome Alloy Stellite 1 vs Tribaloy T-400
Cobalt-Chrome Alloy · grade comparison
Cobalt-Chrome Alloy Stellite 1 and Tribaloy T-400 are both cobalt-chrome alloy grades. Tribaloy T-400 is the stronger of the two: tensile strength 690 MPa (100 ksi) against 620 MPa (89.9 ksi) for Stellite 1, about 11% more. Tribaloy T-400 is harder — 56 HRC against 53 HRC for Stellite 1 — which matters for wear surfaces and threads. Stellite 1 is stiffer (250 GPa vs 225 GPa). On the shop floor, Tribaloy T-400 welds better (fair vs poor).
Tribaloy T-400Choose it when strength drives the design, or when surface hardness matters.
Stellite 1 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
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Fracture Toughness (K_IC)
Hardness, Rockwell C
Hardness, Vickers
Yield Strength (0.2% offset)
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elongation at Break 0.5% · Compressive Strength 1,900 MPa276 ksi · Charpy V-Notch Impact (RT) 3 J2.2 ft·lbf
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)
Max Service Temperature (continuous)
Min Service Temperature
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
Weldability
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 3% · Formability (cold) 2 / 100 · Castability 60 / 100 · Brazeability / Solderability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 20%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
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 1 | Tribaloy T-400 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Stellite 1 vs Tribaloy T-400 — frequently asked
Is Tribaloy T-400 stronger than Stellite 1?
Yes. Tribaloy T-400 has a typical tensile strength of 690 MPa (100 ksi) against 620 MPa (89.9 ksi) for Stellite 1 — about 11% more.
Which is cheaper, Stellite 1 or Tribaloy T-400?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Stellite 1 or Tribaloy T-400?
Tribaloy T-400. Its weldability rates fair (35/100) against poor (20/100) for Stellite 1.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Stellite 1 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.