Tungsten Alloy Class 1 Tungsten vs W (99.95% CP Tungsten)
Tungsten Alloy · grade comparison
Tungsten Alloy Class 1 Tungsten and W (99.95% CP Tungsten) are both tungsten alloy grades. W (99.95% CP Tungsten) is the stronger of the two: yield strength 750 MPa (109 ksi) against 590 MPa (85.6 ksi) for Class 1 Tungsten, about 27% more; tensile strength follows at 950 MPa (138 ksi) vs 800 MPa (116 ksi). W (99.95% CP Tungsten) is harder — 415 HB against 350 HB for Class 1 Tungsten — which matters for wear surfaces and threads. W (99.95% CP Tungsten) runs hotter in service (1,200°C vs 500°C continuous).
W (99.95% CP Tungsten)Choose it when strength drives the design, or when surface hardness matters.
Class 1 Tungsten vs W (99.95% CP Tungsten): propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all tungsten alloy 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 tungsten alloy 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.
Class 1 TungstenW (99.95% CP Tungsten)
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Bulk Modulus 310 GPa45 Msi · Poisson's Ratio 0.28 · Elongation at Break 2% · Reduction in Area 3% · Fracture Toughness (K_IC) 12 MPa·√m10.9 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 19.25 g/cm³0.7 lb/in³ · Melting Point (Solidus) 3,422°C6,192 °F · Liquidus Temperature 3,422°C6,192 °F
Thermal
How each material carries heat and how hot it can run.
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 173 W/m·K100 BTU/hr·ft·°F · Specific Heat Capacity 132 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 4.5 µm/m·K2.5 µin/in·°F · Min Service Temperature 20°C68 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 31 % IACS · Electrical Resistivity 5.6×10⁻⁸ Ω·m2.2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Brazeability / Solderability
Same in both: Machinability 12 / 100 · Weldability 12 / 100 · Formability (cold) 8 / 100 · Castability 3 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Same in both: Embodied Energy (primary production) 400 MJ/kg171,969 BTU/lb · Embodied Carbon (primary production) 27 kg CO₂/kg · Typical Recycled Content 30%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Shock Resistance Index
Same in both: Thermal Diffusivity 68.1 mm²/s
Strength versus weight
Yield strength against density for every tungsten alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Class 1 Tungsten | W (99.95% CP Tungsten) |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Class 1 Tungsten vs W (99.95% CP Tungsten) — frequently asked
Is W (99.95% CP Tungsten) stronger than Class 1 Tungsten?
Yes. W (99.95% CP Tungsten) has a typical yield strength of 750 MPa (109 ksi) against 590 MPa (85.6 ksi) for Class 1 Tungsten — about 27% more. Tensile strength is 950 MPa (138 ksi) vs 800 MPa (116 ksi).
Which is cheaper, Class 1 Tungsten or W (99.95% CP Tungsten)?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose Class 1 Tungsten over W (99.95% CP Tungsten)?
Pick W (99.95% CP Tungsten) when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Class 1 Tungsten and W (99.95% CP Tungsten) 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.