Steel 17CrNiMo6 +FP vs 17CrNiMo6 Normalized
Steel · 17CrNiMo6 temper comparison
17CrNiMo6 +FP and 17CrNiMo6 Normalized are two conditions of the same steel grade, 17CrNiMo6: +FP (treated to ferrite-pearlite structure) versus Normalized. The chemistry is identical, so every difference below comes from the condition. 17CrNiMo6 Normalized is the stronger of the two: yield strength 560 MPa (81.2 ksi) against 390 MPa (56.6 ksi) for 17CrNiMo6 +FP, about 44% more; tensile strength follows at 880 MPa (128 ksi) vs 620 MPa (89.9 ksi). In exchange, 17CrNiMo6 +FP is the more ductile: elongation 22% versus 15% for 17CrNiMo6 Normalized, and 17CrNiMo6 Normalized is harder (260 HB vs 175 HB). On the shop floor, 17CrNiMo6 +FP machines more easily (good vs fair).
17CrNiMo6 +FPChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
17CrNiMo6 NormalizedChoose it when strength drives the design.
17CrNiMo6 +FP vs 17CrNiMo6 Normalized: 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.
17CrNiMo6 +FP17CrNiMo6 Normalized
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 210 GPa30.5 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,490°C2,714 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.5 µm/m·K6.4 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 12 / 100
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: Castability 25 / 100 · Brazeability / Solderability 45 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 32 MJ/kg13,758 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 55 L/kg6.6 gal/lb · Typical Recycled Content 30%
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.
17CrNiMo6 +FP vs 17CrNiMo6 Normalized — frequently asked
Is 17CrNiMo6 Normalized stronger than 17CrNiMo6 +FP?
Yes. 17CrNiMo6 Normalized has a typical yield strength of 560 MPa (81.2 ksi) against 390 MPa (56.6 ksi) for 17CrNiMo6 +FP — about 44% more. Tensile strength is 880 MPa (128 ksi) vs 620 MPa (89.9 ksi).
Which condition does FabDigit quote by default, +FP or Normalized?
Annealed is the default 17CrNiMo6 condition in the FabDigit quote flow (neither +FP nor Normalized). 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, 17CrNiMo6 +FP or 17CrNiMo6 Normalized?
17CrNiMo6 +FP. Its machinability rates good (58/100) against fair (42/100) for 17CrNiMo6 Normalized; for welding the order is 17CrNiMo6 +FP first (fair, 35/100) then 17CrNiMo6 Normalized (poor, 28/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 17CrNiMo6 +FP and 17CrNiMo6 Normalized 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.