Stainless Steel S41425 Q&T 110ksi vs S41425 Q&T 125ksi
Stainless Steel · S41425 temper comparison
S41425 Q&T 110ksi and S41425 Q&T 125ksi are two conditions of the same stainless steel grade, S41425: Q&T 110ksi versus Q&T 125ksi. The chemistry is identical, so every difference below comes from the condition. S41425 Q&T 125ksi is the stronger of the two: yield strength 900 MPa (131 ksi) against 810 MPa (117 ksi) for S41425 Q&T 110ksi, about 11% more; tensile strength follows at 1,030 MPa (149 ksi) vs 950 MPa (138 ksi). In exchange, S41425 Q&T 110ksi is the more ductile: elongation 18% versus 16% for S41425 Q&T 125ksi, and S41425 Q&T 125ksi is harder (330 HB vs 310 HB).
S41425 Q&T 110ksiChoose it when the part is bent, formed or impact-loaded.
S41425 Q&T 125ksiChoose it when strength drives the design.
S41425 Q&T 110ksi vs S41425 Q&T 125ksi: 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.
S41425 Q&T 110ksiS41425 Q&T 125ksi
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 C
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Compressive Strength 810 MPa117 ksi · Shear Strength 570 MPa82.7 ksi · Fracture Toughness (K_IC) 130 MPa·√m118 ksi·√in · Hardness, Vickers 300 HV
Physical
Density and transition temperatures.
Same in both: Density 7.75 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,490°C2,714 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 25 W/m·K14.4 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.8 µm/m·K6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.5 % IACS · Electrical Resistivity 7×10⁻⁷ Ω·m27.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Weldability 65 / 100 · Formability (cold) 25 / 100 · Brazeability / Solderability 40 / 100 · Polishability 72 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb · Embodied Carbon (primary production) 3.4 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 40%
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.
S41425 Q&T 110ksi vs S41425 Q&T 125ksi — frequently asked
Is S41425 Q&T 125ksi stronger than S41425 Q&T 110ksi?
Yes. S41425 Q&T 125ksi has a typical yield strength of 900 MPa (131 ksi) against 810 MPa (117 ksi) for S41425 Q&T 110ksi — about 11% more. Tensile strength is 1,030 MPa (149 ksi) vs 950 MPa (138 ksi).
Which condition does FabDigit quote by default, Q&T 110ksi or Q&T 125ksi?
HT is the default S41425 condition in the FabDigit quote flow (neither Q&T 110ksi nor Q&T 125ksi). 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 S41425 Q&T 110ksi over S41425 Q&T 125ksi?
Pick S41425 Q&T 110ksi when the part is bent, formed or impact-loaded. Pick S41425 Q&T 125ksi when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in S41425 Q&T 110ksi and S41425 Q&T 125ksi 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.