Nickel Alloy Monel R-405-ANN vs Monel R-405-SR
Nickel Alloy · Monel R-405 temper comparison
Monel R-405-ANN and Monel R-405-SR are two conditions of the same nickel alloy grade, Monel R-405: ANN (annealed) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. Monel R-405-SR is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 220 MPa (31.9 ksi) for Monel R-405-ANN, about 136% more; tensile strength follows at 655 MPa (95 ksi) vs 520 MPa (75.4 ksi). In exchange, Monel R-405-ANN is the more ductile: elongation 40% versus 18% for Monel R-405-SR, and Monel R-405-SR is harder (180 HB vs 120 HB).
Monel R-405-ANNChoose it when the part is bent, formed or impact-loaded.
Monel R-405-SRChoose it when strength drives the design.
Monel R-405-ANN vs Monel R-405-SR: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all nickel 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 nickel 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.
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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 179 GPa26 Msi · Shear Modulus 66 GPa9.6 Msi · Bulk Modulus 152 GPa22 Msi · Poisson's Ratio 0.32
Physical
Density and transition temperatures.
Same in both: Density 8.83 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,300°C2,372 °F · Liquidus Temperature 1,350°C2,462 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 21.8 W/m·K12.6 BTU/hr·ft·°F · Specific Heat Capacity 427 J/kg·K0.1 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13.9 µm/m·K7.7 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Max Service Temperature (continuous) 480°C896 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.2 % IACS · Electrical Resistivity 5.47×10⁻⁷ Ω·m21.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V · Corrosion Resistance 79 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 20 / 100 · Castability 40 / 100 · Brazeability / Solderability 55 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 145 MJ/kg62,339 BTU/lb · Embodied Carbon (primary production) 11 kg CO₂/kg · Embodied Water 400 L/kg47.9 gal/lb · Typical Recycled Content 35%
Strength versus weight
Yield strength against density for every nickel alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Monel R-405-ANN vs Monel R-405-SR — frequently asked
Is Monel R-405-SR stronger than Monel R-405-ANN?
Yes. Monel R-405-SR has a typical yield strength of 520 MPa (75.4 ksi) against 220 MPa (31.9 ksi) for Monel R-405-ANN — about 136% more. Tensile strength is 655 MPa (95 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, ANN or SR?
CD is the default Monel R-405 condition in the FabDigit quote flow (neither ANN nor SR). 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, Monel R-405-ANN or Monel R-405-SR?
Monel R-405-SR, by a small margin. Both rate fair for machinability — 52/100 against 45/100 for Monel R-405-ANN.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Monel R-405-ANN and Monel R-405-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.