Stainless Steel S30V Annealed vs S30V Hardened & Tempered
Stainless Steel · S30V temper comparison
S30V Annealed and S30V Hardened & Tempered are two conditions of the same stainless steel grade, S30V: Annealed versus Hardened & Tempered (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. S30V Hardened & Tempered is the stronger of the two: yield strength 1,800 MPa (261 ksi) against 620 MPa (89.9 ksi) for S30V Annealed, about 190% more; tensile strength follows at 1,950 MPa (283 ksi) vs 900 MPa (131 ksi). In exchange, S30V Annealed is the more ductile: elongation 10% versus 1% for S30V Hardened & Tempered, and S30V Hardened & Tempered is harder (60 HRC vs 25 HRC). On the shop floor, S30V Annealed machines more easily (poor vs not recommended).
S30V AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
S30V Hardened & TemperedChoose it when strength drives the design.
S30V Annealed vs S30V Hardened & Tempered: 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.
S30V AnnealedS30V Hardened & Tempered
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 214 GPa31 Msi · Shear Modulus 81 GPa11.7 Msi · Poisson's Ratio 0.3 · Hardness, Brinell 255 HB
Physical
Density and transition temperatures.
Same in both: Density 7.43 g/cm³0.27 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 20 W/m·K11.6 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.6 µm/m·K5.9 µin/in·°F · Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.6 % IACS · Electrical Resistivity 6.5×10⁻⁷ Ω·m25.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Weldability 10 / 100 · Formability (cold) 15 / 100 · Brazeability / Solderability 35 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 60 MJ/kg25,795 BTU/lb · Embodied Carbon (primary production) 4.5 kg CO₂/kg · Typical Recycled Content 20%
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.
S30V Annealed vs S30V Hardened & Tempered — frequently asked
Is S30V Hardened & Tempered stronger than S30V Annealed?
Yes. S30V Hardened & Tempered has a typical yield strength of 1,800 MPa (261 ksi) against 620 MPa (89.9 ksi) for S30V Annealed — about 190% more. Tensile strength is 1,950 MPa (283 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, Annealed or Hardened & Tempered?
Annealed is the default S30V 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, S30V Annealed or S30V Hardened & Tempered?
S30V Annealed. Its machinability rates poor (25/100) against not recommended (8/100) for S30V Hardened & Tempered.
Ready to make it?
Upload a CAD file and FabDigit prices the part in S30V Annealed and S30V Hardened & Tempered 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.