Refractory Metal R04261 Annealed vs R04261-HW
Refractory Metal · R04261 temper comparison
R04261 Annealed and R04261-HW are two conditions of the same refractory metal grade, R04261: Annealed versus HW (hot worked / as-forged bar and billet). The chemistry is identical, so every difference below comes from the condition. R04261-HW is the stronger of the two: yield strength 260 MPa (37.7 ksi) against 200 MPa (29 ksi) for R04261 Annealed, about 30% more; tensile strength follows at 380 MPa (55.1 ksi) vs 310 MPa (45 ksi). In exchange, R04261 Annealed is the more ductile: elongation 25% versus 20% for R04261-HW, and R04261-HW is harder (124 HB vs 105 HB).
R04261 AnnealedChoose it when the part is bent, formed or impact-loaded.
R04261-HWChoose it when strength drives the design.
R04261 Annealed vs R04261-HW: 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.
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 103 GPa14.9 Msi · Shear Modulus 37.5 GPa5.4 Msi · Bulk Modulus 170 GPa24.7 Msi · Poisson's Ratio 0.4
Physical
Density and transition temperatures.
Same in both: Density 8.57 g/cm³0.31 lb/in³ · Melting Point (Solidus) 2,410°C4,370 °F · Liquidus Temperature 2,460°C4,460 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 41 W/m·K23.7 BTU/hr·ft·°F · Specific Heat Capacity 270 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 7.1 µm/m·K3.9 µin/in·°F · Latent Heat of Fusion 320 J/g138 BTU/lb · Max Service Temperature (continuous) 1,200°C2,192 °F · Min Service Temperature -253°C-423 °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) -0.05 V · Corrosion Resistance 85 / 100
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 60 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 1,100 MJ/kg472,915 BTU/lb · Embodied Carbon (primary production) 65 kg CO₂/kg · Embodied Water 900 L/kg108 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.
R04261 Annealed vs R04261-HW — frequently asked
Is R04261-HW stronger than R04261 Annealed?
Yes. R04261-HW has a typical yield strength of 260 MPa (37.7 ksi) against 200 MPa (29 ksi) for R04261 Annealed — about 30% more. Tensile strength is 380 MPa (55.1 ksi) vs 310 MPa (45 ksi).
Which condition does FabDigit quote by default, Annealed or HW?
Annealed is the default R04261 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 welds better, R04261 Annealed or R04261-HW?
R04261 Annealed. Its weldability rates excellent (90/100) against excellent (85/100) for R04261-HW.
Ready to make it?
Upload a CAD file and FabDigit prices the part in R04261 Annealed and R04261-HW 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.