Refractory Metal 50Cr-50Ni-F vs 50Cr-50Ni-SR
Refractory Metal · 50Cr-50Ni temper comparison
50Cr-50Ni-F and 50Cr-50Ni-SR are two conditions of the same refractory metal grade, 50Cr-50Ni: F (as fabricated) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. 50Cr-50Ni-F is the stronger of the two: yield strength 340 MPa (49.3 ksi) against 310 MPa (45 ksi) for 50Cr-50Ni-SR, about 10% more; tensile strength follows at 550 MPa (79.8 ksi) vs 520 MPa (75.4 ksi). In exchange, 50Cr-50Ni-SR is the more ductile: elongation 12% versus 8% for 50Cr-50Ni-F, and 50Cr-50Ni-F is harder (230 HB vs 210 HB).
50Cr-50Ni-FChoose it when strength drives the design.
50Cr-50Ni-SRChoose it when the part is bent, formed or impact-loaded.
50Cr-50Ni-F vs 50Cr-50Ni-SR: 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.
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 B
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 170 GPa24.7 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,390°C2,534 °F · Liquidus Temperature 1,430°C2,606 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 14 W/m·K8.1 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.5 µm/m·K6.4 µin/in·°F · Latent Heat of Fusion 330 J/g142 BTU/lb · Max Service Temperature (continuous) 1,100°C2,012 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.7 % IACS · Electrical Resistivity 1×10⁻⁶ Ω·m39.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 55 / 100 · Brazeability / Solderability 30 / 100 · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 100 MJ/kg42,992 BTU/lb · Embodied Carbon (primary production) 9.5 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 20%
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.
50Cr-50Ni-F vs 50Cr-50Ni-SR — frequently asked
Is 50Cr-50Ni-F stronger than 50Cr-50Ni-SR?
Yes. 50Cr-50Ni-F has a typical yield strength of 340 MPa (49.3 ksi) against 310 MPa (45 ksi) for 50Cr-50Ni-SR — about 10% more. Tensile strength is 550 MPa (79.8 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, F or SR?
F is the default 50Cr-50Ni condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which welds better, 50Cr-50Ni-F or 50Cr-50Ni-SR?
50Cr-50Ni-SR. Its weldability rates poor (25/100) against poor (20/100) for 50Cr-50Ni-F.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 50Cr-50Ni-F and 50Cr-50Ni-SR 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.