Stainless Steel 446 Annealed vs 446 Hot Rolled
Stainless Steel · 446 temper comparison
446 Annealed and 446 Hot Rolled are two conditions of the same stainless steel grade, 446: Annealed versus Hot Rolled. The chemistry is identical, so every difference below comes from the condition. 446 Hot Rolled is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 350 MPa (50.8 ksi) for 446 Annealed, about 9% more. 446 Hot Rolled is harder — 190 HB against 180 HB for 446 Annealed — which matters for wear surfaces and threads.
446 Hot RolledChoose it when strength drives the design, or when surface hardness matters.
446 Annealed vs 446 Hot Rolled: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless steel 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 stainless steel 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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 152 GPa22 Msi · Poisson's Ratio 0.28
Physical
Density and transition temperatures.
Same in both: Density 7.5 g/cm³0.27 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 20.9 W/m·K12.1 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.4 µm/m·K5.8 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 1,095°C2,003 °F · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.6 % IACS · Electrical Resistivity 6.7×10⁻⁷ Ω·m26.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
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 30 / 100 · Brazeability / Solderability 60 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 5 kg CO₂/kg · Embodied Water 150 L/kg18 gal/lb · Typical Recycled Content 50%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
446 Annealed vs 446 Hot Rolled — frequently asked
Is 446 Hot Rolled stronger than 446 Annealed?
Yes. 446 Hot Rolled has a typical yield strength of 380 MPa (55.1 ksi) against 350 MPa (50.8 ksi) for 446 Annealed — about 9% more. Tensile strength is 570 MPa (82.7 ksi) vs 550 MPa (79.8 ksi).
Which condition does FabDigit quote by default, Annealed or Hot Rolled?
Annealed is the default 446 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.
When should I choose 446 Annealed over 446 Hot Rolled?
Pick 446 Hot Rolled when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 446 Annealed and 446 Hot Rolled 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.