Refractory Metal TZM As Sintered vs TZM Stress Relieved
Refractory Metal · TZM temper comparison
TZM As Sintered and TZM Stress Relieved are two conditions of the same refractory metal grade, TZM: As Sintered (sintered) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. TZM Stress Relieved is the stronger of the two: yield strength 760 MPa (110 ksi) against 350 MPa (50.8 ksi) for TZM As Sintered, about 117% more; tensile strength follows at 900 MPa (131 ksi) vs 450 MPa (65.3 ksi). TZM Stress Relieved is the more ductile: elongation 15% versus 4% for TZM As Sintered, and TZM Stress Relieved is harder (255 HB vs 170 HB). TZM As Sintered is lighter (9.9 g/cm³ vs 10.22 g/cm³ for TZM Stress Relieved) and TZM Stress Relieved is stiffer (315 GPa vs 285 GPa). On the shop floor, TZM As Sintered machines more easily (good vs fair).
TZM As SinteredChoose it when weight is the constraint, or when the part is machined in volume.
TZM Stress RelievedChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
TZM As Sintered vs TZM 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.
TZM As SinteredTZM Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
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, Vickers
Same in both: Shear Modulus 122 GPa17.7 Msi · Bulk Modulus 260 GPa37.7 Msi · Poisson's Ratio 0.32 · Hardness, Rockwell C 26 HRC
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 2,617°C4,743 °F · Liquidus Temperature 2,623°C4,753 °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) 5.3 µm/m·K2.9 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature 20°C68 °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) -0.2 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: Brazeability / Solderability 65 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 380 MJ/kg163,371 BTU/lb · Embodied Carbon (primary production) 26 kg CO₂/kg · Embodied Water 300 L/kg35.9 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.
TZM As Sintered vs TZM Stress Relieved — frequently asked
Is TZM Stress Relieved stronger than TZM As Sintered?
Yes. TZM Stress Relieved has a typical yield strength of 760 MPa (110 ksi) against 350 MPa (50.8 ksi) for TZM As Sintered — about 117% more. Tensile strength is 900 MPa (131 ksi) vs 450 MPa (65.3 ksi).
Which condition does FabDigit quote by default, As Sintered or Stress Relieved?
Stress Relieved is the default TZM 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 is easier to machine, TZM As Sintered or TZM Stress Relieved?
TZM As Sintered. Its machinability rates good (55/100) against fair (45/100) for TZM Stress Relieved; for welding the order is TZM As Sintered first (poor, 25/100) then TZM Stress Relieved (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in TZM As Sintered and TZM 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.