Stainless Steel 317LM-1/4 Hard vs 317LM Annealed
Stainless Steel · 317LM temper comparison
317LM-1/4 Hard and 317LM Annealed are two conditions of the same stainless steel grade, 317LM: 1/4 Hard (quarter hard) versus Annealed. The chemistry is identical, so every difference below comes from the condition. 317LM-1/4 Hard is the stronger of the two: yield strength 600 MPa (87 ksi) against 290 MPa (42.1 ksi) for 317LM Annealed, about 107% more; tensile strength follows at 900 MPa (131 ksi) vs 600 MPa (87 ksi). In exchange, 317LM Annealed is the more ductile: elongation 50% versus 20% for 317LM-1/4 Hard, and 317LM-1/4 Hard is harder (250 HB vs 165 HB).
317LM-1/4 HardChoose it when strength drives the design.
317LM AnnealedChoose it when the part is bent, formed or impact-loaded.
317LM-1/4 Hard vs 317LM Annealed: 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
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 166 GPa24.1 Msi · Poisson's Ratio 0.3 · Reduction in Area 65% · Shear Strength 400 MPa58 ksi · Fracture Toughness (K_IC) 200 MPa·√m182 ksi·√in · Charpy V-Notch Impact (RT) 180 J133 ft·lbf · Hardness, Rockwell B 82 HRB
Physical
Density and transition temperatures.
Same in both: Density 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,375°C2,507 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
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) 16.5 µm/m·K9.2 µin/in·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Max Service Temperature (continuous) 800°C1,472 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.2 % IACS · Electrical Resistivity 7.9×10⁻⁷ Ω·m31.1 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Machinability 38 / 100 · Weldability 85 / 100 · Castability 45 / 100 · Brazeability / Solderability 65 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 5.2 kg CO₂/kg · Embodied Water 200 L/kg24 gal/lb · Typical Recycled Content 60%
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.
317LM-1/4 Hard vs 317LM Annealed — frequently asked
Is 317LM-1/4 Hard stronger than 317LM Annealed?
Yes. 317LM-1/4 Hard has a typical yield strength of 600 MPa (87 ksi) against 290 MPa (42.1 ksi) for 317LM Annealed — about 107% more. Tensile strength is 900 MPa (131 ksi) vs 600 MPa (87 ksi).
Which condition does FabDigit quote by default, 1/4 Hard or Annealed?
Annealed is the default 317LM 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 317LM-1/4 Hard over 317LM Annealed?
Pick 317LM-1/4 Hard when strength drives the design. Pick 317LM Annealed when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 317LM-1/4 Hard and 317LM Annealed 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.