Refractory Metal Pure Ta As Rolled vs Pure Ta Stress Relieved
Refractory Metal · Pure Ta temper comparison
Pure Ta As Rolled and Pure Ta Stress Relieved are two conditions of the same refractory metal grade, Pure Ta: As Rolled (hot rolled) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Pure Ta As Rolled is the stronger of the two: yield strength 390 MPa (56.6 ksi) against 270 MPa (39.2 ksi) for Pure Ta Stress Relieved, about 44% more; tensile strength follows at 450 MPa (65.3 ksi) vs 340 MPa (49.3 ksi). In exchange, Pure Ta Stress Relieved is the more ductile: elongation 20% versus 8% for Pure Ta As Rolled, and Pure Ta Stress Relieved is harder (128 HB vs 95 HB). Pure Ta Stress Relieved runs hotter in service (300°C vs 250°C continuous).
Pure Ta As RolledChoose it when strength drives the design.
Pure Ta Stress RelievedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pure Ta As Rolled vs Pure Ta 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.
Pure Ta As RolledPure Ta 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, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 186 GPa27 Msi · Shear Modulus 69 GPa10 Msi · Bulk Modulus 200 GPa29 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 16.6 g/cm³0.6 lb/in³ · Melting Point (Solidus) 2,996°C5,425 °F · Liquidus Temperature 2,996°C5,425 °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 140 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 6.5 µm/m·K3.6 µin/in·°F · Latent Heat of Fusion 202 J/g86.8 BTU/lb · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 97 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 65 / 100 · Castability 10 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 4,200 MJ/kg1,805,677 BTU/lb · Embodied Carbon (primary production) 260 kg CO₂/kg · Embodied Water 700 L/kg83.9 gal/lb · 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.
Pure Ta As Rolled vs Pure Ta Stress Relieved — frequently asked
Is Pure Ta As Rolled stronger than Pure Ta Stress Relieved?
Yes. Pure Ta As Rolled has a typical yield strength of 390 MPa (56.6 ksi) against 270 MPa (39.2 ksi) for Pure Ta Stress Relieved — about 44% more. Tensile strength is 450 MPa (65.3 ksi) vs 340 MPa (49.3 ksi).
Which condition does FabDigit quote by default, As Rolled or Stress Relieved?
Vacuum Annealed is the default Pure Ta condition in the FabDigit quote flow (neither As Rolled 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, Pure Ta As Rolled or Pure Ta Stress Relieved?
Pure Ta As Rolled, by a small margin. Both rate poor for machinability — 32/100 against 26/100 for Pure Ta Stress Relieved.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pure Ta As Rolled and Pure Ta 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.