Stainless Steel 310S Cold Worked Half Hard vs 310S Hot Rolled
Stainless Steel · 310S temper comparison
310S Cold Worked Half Hard and 310S Hot Rolled are two conditions of the same stainless steel grade, 310S: Cold Worked Half Hard (cold Worked 1/2 Hard) versus Hot Rolled. The chemistry is identical, so every difference below comes from the condition. 310S Cold Worked Half Hard is the stronger of the two: yield strength 690 MPa (100 ksi) against 275 MPa (39.9 ksi) for 310S Hot Rolled, about 151% more; tensile strength follows at 930 MPa (135 ksi) vs 580 MPa (84.1 ksi). In exchange, 310S Hot Rolled is the more ductile: elongation 42% versus 12% for 310S Cold Worked Half Hard, and 310S Cold Worked Half Hard is harder (280 HB vs 180 HB). 310S Hot Rolled runs hotter in service (1,050°C vs 500°C continuous).
310S Cold Worked Half HardChoose it when strength drives the design.
310S Hot RolledChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
310S Cold Worked Half Hard vs 310S 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.
310S Cold Worked Half Hard310S Hot Rolled
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
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 77 GPa11.2 Msi · Bulk Modulus 152 GPa22 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 7.98 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 14.2 W/m·K8.2 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.9 µm/m·K8.8 µin/in·°F · Latent Heat of Fusion 280 J/g120 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.2 % IACS · Electrical Resistivity 7.8×10⁻⁷ Ω·m30.7 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V · Corrosion Resistance 64 / 100
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 55 / 100 · Brazeability / Solderability 60 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 85 MJ/kg36,543 BTU/lb · Embodied Carbon (primary production) 6.5 kg CO₂/kg · Embodied Water 120 L/kg14.4 gal/lb · Typical Recycled Content 55%
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.
310S Cold Worked Half Hard vs 310S Hot Rolled — frequently asked
Is 310S Cold Worked Half Hard stronger than 310S Hot Rolled?
Yes. 310S Cold Worked Half Hard has a typical yield strength of 690 MPa (100 ksi) against 275 MPa (39.9 ksi) for 310S Hot Rolled — about 151% more. Tensile strength is 930 MPa (135 ksi) vs 580 MPa (84.1 ksi).
Which condition does FabDigit quote by default, Cold Worked Half Hard or Hot Rolled?
Solution Annealed is the default 310S condition in the FabDigit quote flow (neither Cold Worked Half Hard nor Hot Rolled). 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, 310S Cold Worked Half Hard or 310S Hot Rolled?
310S Cold Worked Half Hard. Its machinability rates fair (35/100) against poor (30/100) for 310S Hot Rolled; for welding the order is 310S Hot Rolled first (very good, 75/100) then 310S Cold Worked Half Hard (good, 68/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 310S Cold Worked Half Hard and 310S 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.