Stainless Steel 317LMN-CD vs 317LMN CR-2B
Stainless Steel · 317LMN temper comparison
317LMN-CD and 317LMN CR-2B are two conditions of the same stainless steel grade, 317LMN: CD (cold drawn) versus CR-2B. The chemistry is identical, so every difference below comes from the condition. 317LMN-CD is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 355 MPa (51.5 ksi) for 317LMN CR-2B, about 55% more; tensile strength follows at 760 MPa (110 ksi) vs 640 MPa (92.8 ksi). In exchange, 317LMN CR-2B is the more ductile: elongation 44% versus 25% for 317LMN-CD, and 317LMN-CD is harder (220 HB vs 175 HB).
317LMN-CDChoose it when strength drives the design.
317LMN CR-2BChoose it when the part is bent, formed or impact-loaded.
317LMN-CD vs 317LMN CR-2B: 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
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
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 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,375°C2,507 °F · Liquidus Temperature 1,420°C2,588 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 14 W/m·K8.1 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16 µm/m·K8.9 µin/in·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Max Service Temperature (continuous) 425°C797 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2 % IACS · Electrical Resistivity 8.5×10⁻⁷ Ω·m33.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 80 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Polishability
Same in both: Weldability 80 / 100 · Brazeability / Solderability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 250 L/kg30 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.
317LMN-CD vs 317LMN CR-2B — frequently asked
Is 317LMN-CD stronger than 317LMN CR-2B?
Yes. 317LMN-CD has a typical yield strength of 550 MPa (79.8 ksi) against 355 MPa (51.5 ksi) for 317LMN CR-2B — about 55% more. Tensile strength is 760 MPa (110 ksi) vs 640 MPa (92.8 ksi).
Which condition does FabDigit quote by default, CD or CR-2B?
Annealed is the default 317LMN condition in the FabDigit quote flow (neither CD nor CR-2B). 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, 317LMN-CD or 317LMN CR-2B?
317LMN-CD. Its machinability rates fair (35/100) against poor (28/100) for 317LMN CR-2B.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 317LMN-CD and 317LMN CR-2B 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.