Refractory Metal FeCr-LC vs FeCrSi
Refractory Metal · grade comparison
Refractory Metal FeCr-LC and FeCrSi are both refractory metal grades. FeCr-LC is the stronger of the two: tensile strength 200 MPa (29 ksi) against 120 MPa (17.4 ksi) for FeCrSi, about 67% more. FeCr-LC is the more ductile: elongation 0.1% versus 0% for FeCrSi, and FeCrSi is harder (65 HRC vs 48 HRC). FeCrSi is lighter (5.2 g/cm³ vs 7.2 g/cm³ for FeCr-LC) and FeCr-LC is stiffer (220 GPa vs 150 GPa).
FeCr-LCChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
FeCrSiChoose it when weight is the constraint.
FeCr-LC vs FeCrSi: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all refractory metal 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 refractory metal 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
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Shear Strength
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Reduction in Area
Same in both: Charpy V-Notch Impact (RT) 1 J0.74 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)
Latent Heat of Fusion
Max Service Temperature (continuous)
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
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)
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)
Strength versus weight
Yield strength against density for every refractory metal grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | FeCr-LC | FeCrSi |
|---|---|---|
| Default condition | — | — |
| Relative cost | $ Budget | $ Budget |
| Min. machined wall | — | — |
| Best machined surface | — | — |
FeCr-LC vs FeCrSi — frequently asked
Is FeCr-LC stronger than FeCrSi?
Yes. FeCr-LC has a typical tensile strength of 200 MPa (29 ksi) against 120 MPa (17.4 ksi) for FeCrSi — about 67% more.
Which is cheaper, FeCr-LC or FeCrSi?
Both sit in the same relative cost tier ($, budget); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, FeCr-LC or FeCrSi?
FeCr-LC. Its weldability rates not recommended (5/100) against not recommended (0/100) for FeCrSi.
Ready to make it?
Upload a CAD file and FabDigit prices the part in FeCr-LC and FeCrSi 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.