Cobalt-Chrome Alloy F1537 Alloy 2 vs G-CoCr28
Cobalt-Chrome Alloy · grade comparison
Cobalt-Chrome Alloy F1537 Alloy 2 and G-CoCr28 are both cobalt-chrome alloy grades. F1537 Alloy 2 is the stronger of the two: yield strength 950 MPa (138 ksi) against 500 MPa (72.5 ksi) for G-CoCr28, about 90% more; tensile strength follows at 1,280 MPa (186 ksi) vs 720 MPa (104 ksi). F1537 Alloy 2 is the more ductile: elongation 22% versus 9% for G-CoCr28, and F1537 Alloy 2 is harder (35 HRC vs 30 HRC). On the shop floor, G-CoCr28 welds better (30 vs 20 out of 100).
F1537 Alloy 2Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
G-CoCr28Choose it when it will be welded.
F1537 Alloy 2 vs G-CoCr28: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8.3 g/cm³0.3 lb/in³ · Melting Point (Solidus) 1,330°C2,426 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Thermal Conductivity 14 W/m·K8.1 BTU/hr·ft·°F · Specific Heat Capacity 450 J/kg·K0.11 BTU/lb·°F · Max Service Temperature (continuous) 600°C1,112 °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).
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)
Castability
Polishability
Same in both: Brazeability / Solderability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 500 L/kg59.9 gal/lb · Typical Recycled Content 20%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Shock Resistance Index
Same in both: Thermal Diffusivity 3.7 mm²/s
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 | F1537 Alloy 2 | G-CoCr28 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
F1537 Alloy 2 vs G-CoCr28 — frequently asked
Is F1537 Alloy 2 stronger than G-CoCr28?
Yes. F1537 Alloy 2 has a typical yield strength of 950 MPa (138 ksi) against 500 MPa (72.5 ksi) for G-CoCr28 — about 90% more. Tensile strength is 1,280 MPa (186 ksi) vs 720 MPa (104 ksi).
Which is cheaper, F1537 Alloy 2 or G-CoCr28?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, F1537 Alloy 2 or G-CoCr28?
G-CoCr28. Its machinability rates poor (15/100) against not recommended (8/100) for F1537 Alloy 2; for welding the order is G-CoCr28 first (poor, 30/100) then F1537 Alloy 2 (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in F1537 Alloy 2 and G-CoCr28 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.