Refractory Metal R04210 Annealed vs R04210-SR
Refractory Metal · R04210 temper comparison
R04210 Annealed and R04210-SR are two conditions of the same refractory metal grade, R04210: Annealed versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. R04210-SR is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 115 MPa (16.7 ksi) for R04210 Annealed, about 117% more; tensile strength follows at 320 MPa (46.4 ksi) vs 200 MPa (29 ksi). In exchange, R04210 Annealed is the more ductile: elongation 40% versus 20% for R04210-SR, and R04210-SR is harder (105 HB vs 70 HB).
R04210 AnnealedChoose it when the part is bent, formed or impact-loaded.
R04210-SRChoose it when strength drives the design.
R04210 Annealed vs R04210-SR: 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 0.39
Physical
Density and transition temperatures.
Same in both: Density 8.57 g/cm³0.31 lb/in³ · Melting Point (Solidus) 2,468°C4,474 °F · Liquidus Temperature 2,468°C4,474 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 265 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 7.3 µm/m·K4.1 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Max Service Temperature (continuous) 400°C752 °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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 88 / 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: Castability 20 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 320 MJ/kg137,575 BTU/lb · Embodied Carbon (primary production) 22 kg CO₂/kg · Embodied Water 600 L/kg71.9 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.
R04210 Annealed vs R04210-SR — frequently asked
Is R04210-SR stronger than R04210 Annealed?
Yes. R04210-SR has a typical yield strength of 250 MPa (36.3 ksi) against 115 MPa (16.7 ksi) for R04210 Annealed — about 117% more. Tensile strength is 320 MPa (46.4 ksi) vs 200 MPa (29 ksi).
Which condition does FabDigit quote by default, Annealed or SR?
Annealed is the default R04210 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, R04210 Annealed or R04210-SR?
R04210-SR, by a small margin. Both rate poor for machinability — 33/100 against 28/100 for R04210 Annealed; for welding the order is R04210 Annealed first (very good, 70/100) then R04210-SR (good, 62/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in R04210 Annealed and R04210-SR 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.