Stainless Steel 08Cr17Ti 1/4H vs 08Cr17Ti Stress-relieved
Stainless Steel · 08Cr17Ti temper comparison
08Cr17Ti 1/4H and 08Cr17Ti Stress-relieved are two conditions of the same stainless steel grade, 08Cr17Ti: 1/4H (quarter hard) versus Stress-relieved. The chemistry is identical, so every difference below comes from the condition. 08Cr17Ti 1/4H is the stronger of the two: yield strength 450 MPa (65.3 ksi) against 290 MPa (42.1 ksi) for 08Cr17Ti Stress-relieved, about 55% more; tensile strength follows at 560 MPa (81.2 ksi) vs 470 MPa (68.2 ksi). In exchange, 08Cr17Ti Stress-relieved is the more ductile: elongation 29% versus 14% for 08Cr17Ti 1/4H, and 08Cr17Ti 1/4H is harder (195 HB vs 158 HB). 08Cr17Ti Stress-relieved runs hotter in service (815°C vs 425°C continuous).
08Cr17Ti 1/4HChoose it when strength drives the design.
08Cr17Ti Stress-relievedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
08Cr17Ti 1/4H vs 08Cr17Ti Stress-relieved: 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.
08Cr17Ti 1/4H08Cr17Ti Stress-relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
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 160 GPa23.2 Msi · Poisson's Ratio 0.28
Physical
Density and transition temperatures.
Same in both: Density 7.7 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 24.5 W/m·K14.2 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 · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.9 % IACS · Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V
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: Brazeability / Solderability 65 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 42 MJ/kg18,057 BTU/lb · Embodied Carbon (primary production) 3 kg CO₂/kg · Embodied Water 150 L/kg18 gal/lb · Typical Recycled Content 65%
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.
08Cr17Ti 1/4H vs 08Cr17Ti Stress-relieved — frequently asked
Is 08Cr17Ti 1/4H stronger than 08Cr17Ti Stress-relieved?
Yes. 08Cr17Ti 1/4H has a typical yield strength of 450 MPa (65.3 ksi) against 290 MPa (42.1 ksi) for 08Cr17Ti Stress-relieved — about 55% more. Tensile strength is 560 MPa (81.2 ksi) vs 470 MPa (68.2 ksi).
Which condition does FabDigit quote by default, 1/4H or Stress-relieved?
Annealed is the default 08Cr17Ti condition in the FabDigit quote flow (neither 1/4H nor Stress-relieved). 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, 08Cr17Ti 1/4H or 08Cr17Ti Stress-relieved?
08Cr17Ti 1/4H. Its machinability rates good (55/100) against fair (50/100) for 08Cr17Ti Stress-relieved.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 08Cr17Ti 1/4H and 08Cr17Ti 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.