Refractory Metal R02002-ANN vs R02002-SR
Refractory Metal · R02002 temper comparison
R02002-ANN and R02002-SR are two conditions of the same refractory metal grade, R02002: ANN (annealed) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. R02002-SR is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 240 MPa (34.8 ksi) for R02002-ANN, about 108% more; tensile strength follows at 620 MPa (89.9 ksi) vs 450 MPa (65.3 ksi). In exchange, R02002-ANN is the more ductile: elongation 25% versus 12% for R02002-SR, and R02002-SR is harder (218 HB vs 165 HB).
R02002-ANNChoose it when the part is bent, formed or impact-loaded.
R02002-SRChoose it when strength drives the design.
R02002-ANN vs R02002-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
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 138 GPa20 Msi · Shear Modulus 55 GPa8 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 13.31 g/cm³0.48 lb/in³ · Melting Point (Solidus) 2,233°C4,051 °F · Liquidus Temperature 2,233°C4,051 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 23 W/m·K13.3 BTU/hr·ft·°F · Specific Heat Capacity 144 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 5.9 µm/m·K3.3 µin/in·°F · Latent Heat of Fusion 152 J/g65.3 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: 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: Castability 25 / 100 · Brazeability / Solderability 40 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 2,000 MJ/kg859,846 BTU/lb · Embodied Carbon (primary production) 130 kg CO₂/kg · Typical Recycled Content 20%
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.
R02002-ANN vs R02002-SR — frequently asked
Is R02002-SR stronger than R02002-ANN?
Yes. R02002-SR has a typical yield strength of 500 MPa (72.5 ksi) against 240 MPa (34.8 ksi) for R02002-ANN — about 108% more. Tensile strength is 620 MPa (89.9 ksi) vs 450 MPa (65.3 ksi).
Which condition does FabDigit quote by default, ANN or SR?
ANN is the default R02002 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, R02002-ANN or R02002-SR?
R02002-ANN. Its weldability rates very good (70/100) against good (65/100) for R02002-SR.
Ready to make it?
Upload a CAD file and FabDigit prices the part in R02002-ANN and R02002-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.