Refractory Metal C-103 Cold Worked vs C-103 Stress Relieved
Refractory Metal · C-103 temper comparison
C-103 Cold Worked and C-103 Stress Relieved are two conditions of the same refractory metal grade, C-103: Cold Worked versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. C-103 Cold Worked is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 450 MPa (65.3 ksi) for C-103 Stress Relieved, about 38% more; tensile strength follows at 690 MPa (100 ksi) vs 550 MPa (79.8 ksi). In exchange, C-103 Stress Relieved is the more ductile: elongation 15% versus 8% for C-103 Cold Worked, and C-103 Cold Worked is harder (260 HV vs 225 HV). C-103 Stress Relieved runs hotter in service (1,000°C vs 800°C continuous). On the shop floor, C-103 Stress Relieved welds better (very good vs good).
C-103 Cold WorkedChoose it when strength drives the design.
C-103 Stress RelievedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C-103 Cold Worked vs C-103 Stress Relieved: 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.
C-103 Cold WorkedC-103 Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 88 GPa12.8 Msi · Shear Modulus 33 GPa4.8 Msi · Bulk Modulus 98 GPa14.2 Msi · Poisson's Ratio 0.35
Physical
Density and transition temperatures.
Same in both: Density 8.85 g/cm³0.32 lb/in³ · Melting Point (Solidus) 2,350°C4,262 °F · Liquidus Temperature 2,400°C4,352 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 272 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 7.4 µm/m·K4.1 µin/in·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
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 20 / 100 · Brazeability / Solderability 60 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 900 MJ/kg386,931 BTU/lb · Embodied Carbon (primary production) 55 kg CO₂/kg · Typical Recycled Content 25%
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.
C-103 Cold Worked vs C-103 Stress Relieved — frequently asked
Is C-103 Cold Worked stronger than C-103 Stress Relieved?
Yes. C-103 Cold Worked has a typical yield strength of 620 MPa (89.9 ksi) against 450 MPa (65.3 ksi) for C-103 Stress Relieved — about 38% more. Tensile strength is 690 MPa (100 ksi) vs 550 MPa (79.8 ksi).
Which condition does FabDigit quote by default, Cold Worked or Stress Relieved?
Vacuum Annealed is the default C-103 condition in the FabDigit quote flow (neither Cold Worked nor Stress Relieved). 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 is easier to machine, C-103 Cold Worked or C-103 Stress Relieved?
C-103 Cold Worked, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for C-103 Stress Relieved; for welding the order is C-103 Stress Relieved first (very good, 75/100) then C-103 Cold Worked (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C-103 Cold Worked and C-103 Stress Relieved 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.