Steel CPM S30V Annealed vs CPM S30V Stress Relieved
Steel · CPM S30V temper comparison
CPM S30V Annealed and CPM S30V Stress Relieved are two conditions of the same steel grade, CPM S30V: Annealed versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Both yield at about 700 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (Annealed versus Stress Relieved). CPM S30V Annealed is the more ductile: elongation 8% versus 7% for CPM S30V Stress Relieved. CPM S30V Annealed runs hotter in service (400°C vs 250°C continuous).
CPM S30V AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
CPM S30V Annealed vs CPM S30V Stress Relieved: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all 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 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.
CPM S30V AnnealedCPM S30V Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 221 GPa32.1 Msi · Shear Modulus 85 GPa12.3 Msi · Poisson's Ratio 0.28 · Fracture Toughness (K_IC) 24 MPa·√m21.8 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 7.44 g/cm³0.27 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 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) 10.4 µm/m·K5.8 µin/in·°F · Min Service Temperature -70°C-94 °F
Electrical
Conductivity and insulation.
Same in both: 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
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 10 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 70 MJ/kg30,095 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 100 L/kg12 gal/lb · Typical Recycled Content 25%
Strength versus weight
Yield strength against density for every steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
CPM S30V Annealed vs CPM S30V Stress Relieved — frequently asked
What is the difference between CPM S30V Annealed and CPM S30V Stress Relieved?
CPM S30V Annealed and CPM S30V Stress Relieved are two conditions of the same steel grade, CPM S30V: Annealed versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Both yield at about 700 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (Annealed versus Stress Relieved).
Which condition does FabDigit quote by default, Annealed or Stress Relieved?
Annealed is the default CPM 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.
When should I choose CPM S30V Annealed over CPM S30V Stress Relieved?
Pick CPM S30V Annealed when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in CPM S30V Annealed and CPM S30V Stress Relieved 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.