Steel A217 WC9 N+T+SPWHT vs A217 WC9 Q+T
Steel · A217 WC9 temper comparison
A217 WC9 N+T+SPWHT and A217 WC9 Q+T are two conditions of the same steel grade, A217 WC9: N+T+SPWHT (N+T + simulated PWHT) versus Q+T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. A217 WC9 Q+T is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 300 MPa (43.5 ksi) for A217 WC9 N+T+SPWHT, about 27% more; tensile strength follows at 585 MPa (84.8 ksi) vs 520 MPa (75.4 ksi). In exchange, A217 WC9 N+T+SPWHT is the more ductile: elongation 25% versus 22% for A217 WC9 Q+T, and A217 WC9 Q+T is harder (185 HB vs 160 HB).
A217 WC9 N+T+SPWHTChoose it when the part is bent, formed or impact-loaded.
A217 WC9 Q+TChoose it when strength drives the design.
A217 WC9 N+T+SPWHT vs A217 WC9 Q+T: 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.
A217 WC9 N+T+SPWHTA217 WC9 Q+T
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)
Fracture Toughness (K_IC)
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 81 GPa11.7 Msi · Bulk Modulus 165 GPa23.9 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) 1,450°C2,642 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.3 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 565°C1,049 °F · Min Service Temperature -30°C-22 °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 20 / 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 60 / 100 · Brazeability / Solderability 40 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 27 MJ/kg11,608 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 75%
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.
A217 WC9 N+T+SPWHT vs A217 WC9 Q+T — frequently asked
Is A217 WC9 Q+T stronger than A217 WC9 N+T+SPWHT?
Yes. A217 WC9 Q+T has a typical yield strength of 380 MPa (55.1 ksi) against 300 MPa (43.5 ksi) for A217 WC9 N+T+SPWHT — about 27% more. Tensile strength is 585 MPa (84.8 ksi) vs 520 MPa (75.4 ksi).
Which condition does FabDigit quote by default, N+T+SPWHT or Q+T?
N+T is the default A217 WC9 condition in the FabDigit quote flow (neither N+T+SPWHT nor Q+T). 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, A217 WC9 N+T+SPWHT or A217 WC9 Q+T?
A217 WC9 N+T+SPWHT, by a small margin. Both rate fair for machinability — 52/100 against 47/100 for A217 WC9 Q+T.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A217 WC9 N+T+SPWHT and A217 WC9 Q+T 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.