Stainless Steel S41050-CD vs S41050 QT-Low
Stainless Steel · S41050 temper comparison
S41050-CD and S41050 QT-Low are two conditions of the same stainless steel grade, S41050: CD (cold drawn) versus QT-Low (Q&T). The chemistry is identical, so every difference below comes from the condition. S41050 QT-Low is the stronger of the two: yield strength 760 MPa (110 ksi) against 570 MPa (82.7 ksi) for S41050-CD, about 33% more; tensile strength follows at 950 MPa (138 ksi) vs 700 MPa (102 ksi). S41050-CD is harder — 220 HB against 160 HB for S41050 QT-Low — which matters for wear surfaces and threads. On the shop floor, S41050-CD machines more easily (good vs poor), S41050-CD welds better (good vs fair), and S41050-CD forms better (fair vs not recommended).
S41050-CDChoose it when surface hardness matters, or when the part is machined in volume.
S41050 QT-LowChoose it when strength drives the design.
S41050-CD vs S41050 QT-Low: 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
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 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Shear Strength 360 MPa52.2 ksi
Physical
Density and transition temperatures.
Same in both: Density 7.7 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,480°C2,696 °F · Liquidus Temperature 1,530°C2,786 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 24.9 W/m·K14.4 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.5 µm/m·K5.8 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 600°C1,112 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3 % IACS · Electrical Resistivity 5.7×10⁻⁷ Ω·m22.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.3 V
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 45 / 100 · Brazeability / Solderability 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 42 MJ/kg18,057 BTU/lb · Embodied Carbon (primary production) 3.2 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 65%
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.
S41050-CD vs S41050 QT-Low — frequently asked
Is S41050 QT-Low stronger than S41050-CD?
Yes. S41050 QT-Low has a typical yield strength of 760 MPa (110 ksi) against 570 MPa (82.7 ksi) for S41050-CD — about 33% more. Tensile strength is 950 MPa (138 ksi) vs 700 MPa (102 ksi).
Which condition does FabDigit quote by default, CD or QT-Low?
Annealed is the default S41050 condition in the FabDigit quote flow (neither CD nor QT-Low). 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, S41050-CD or S41050 QT-Low?
S41050-CD. Its machinability rates good (55/100) against poor (33/100) for S41050 QT-Low; for welding the order is S41050-CD first (good, 65/100) then S41050 QT-Low (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in S41050-CD and S41050 QT-Low 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.