Refractory Metal Pure Ta As Rolled vs Pure Ta CW Hard
Refractory Metal · Pure Ta temper comparison
Pure Ta As Rolled and Pure Ta CW Hard are two conditions of the same refractory metal grade, Pure Ta: As Rolled (hot rolled) versus CW Hard (heavily cold worked wire/foil). The chemistry is identical, so every difference below comes from the condition. Pure Ta CW Hard is the stronger of the two: yield strength 560 MPa (81.2 ksi) against 390 MPa (56.6 ksi) for Pure Ta As Rolled, about 44% more; tensile strength follows at 620 MPa (89.9 ksi) vs 450 MPa (65.3 ksi). In exchange, Pure Ta As Rolled is the more ductile: elongation 8% versus 3% for Pure Ta CW Hard, and Pure Ta CW Hard is harder (208 HB vs 95 HB). On the shop floor, Pure Ta As Rolled welds better (65 vs 55 out of 100).
Pure Ta As RolledChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Pure Ta CW HardChoose it when strength drives the design.
Pure Ta As Rolled vs Pure Ta CW Hard: 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 CW Hard
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
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 · Reduction in Area 40%
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
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 · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -269°C-452 °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) -0.1 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 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 CW Hard — frequently asked
Is Pure Ta CW Hard stronger than Pure Ta As Rolled?
Yes. Pure Ta CW Hard has a typical yield strength of 560 MPa (81.2 ksi) against 390 MPa (56.6 ksi) for Pure Ta As Rolled — about 44% more. Tensile strength is 620 MPa (89.9 ksi) vs 450 MPa (65.3 ksi).
Which condition does FabDigit quote by default, As Rolled or CW Hard?
Vacuum Annealed is the default Pure Ta condition in the FabDigit quote flow (neither As Rolled nor CW Hard). 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, Pure Ta As Rolled or Pure Ta CW Hard?
Pure Ta As Rolled. Its weldability rates good (65/100) against good (55/100) for Pure Ta CW Hard.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pure Ta As Rolled and Pure Ta CW Hard 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.