Stainless Steel S41425-A vs S41425-HT
Stainless Steel · S41425 temper comparison
S41425-A and S41425-HT are two conditions of the same stainless steel grade, S41425: A (solution annealed) versus HT (quenched and double tempered). The chemistry is identical, so every difference below comes from the condition. S41425-HT is the stronger of the two: yield strength 810 MPa (117 ksi) against 570 MPa (82.7 ksi) for S41425-A, about 42% more; tensile strength follows at 930 MPa (135 ksi) vs 760 MPa (110 ksi). In exchange, S41425-A is the more ductile: elongation 24% versus 17% for S41425-HT, and S41425-HT is harder (285 HB vs 235 HB). On the shop floor, S41425-A machines more easily (47 vs 35 out of 100).
S41425-AChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
S41425-HTChoose it when strength drives the design.
S41425-A vs S41425-HT: 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
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 · Fatigue Strength (Endurance Limit) 440 MPa63.8 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.
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 · Max Service Temperature (continuous) 480°C896 °F · 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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V · Corrosion Resistance 44 / 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 65 / 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-A vs S41425-HT — frequently asked
Is S41425-HT stronger than S41425-A?
Yes. S41425-HT has a typical yield strength of 810 MPa (117 ksi) against 570 MPa (82.7 ksi) for S41425-A — about 42% more. Tensile strength is 930 MPa (135 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, A or HT?
HT is the default S41425 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 is easier to machine, S41425-A or S41425-HT?
S41425-A, by a small margin. Both rate fair for machinability — 47/100 against 35/100 for S41425-HT.
Ready to make it?
Upload a CAD file and FabDigit prices the part in S41425-A and S41425-HT 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.