Steel E335 +N vs E335 QT-200HB
Steel · E335 temper comparison
E335 +N and E335 QT-200HB are two conditions of the same steel grade, E335: +N (normalized) versus QT-200HB (+QT). The chemistry is identical, so every difference below comes from the condition. E335 QT-200HB is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 360 MPa (52.2 ksi) for E335 +N, about 31% more; tensile strength follows at 700 MPa (102 ksi) vs 610 MPa (88.5 ksi). In exchange, E335 +N is the more ductile: elongation 20% versus 18% for E335 QT-200HB, and E335 QT-200HB is harder (215 HB vs 175 HB). On the shop floor, E335 +N welds better (48 vs 38 out of 100).
E335 +NChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
E335 QT-200HBChoose it when strength drives the design.
E335 +N vs E335 QT-200HB: 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.
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 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) 11.7 µm/m·K6.5 µin/in·°F · Latent Heat of Fusion 247 J/g106 BTU/lb · Max Service Temperature (continuous) 350°C662 °F · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 10 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 10 / 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: Brazeability / Solderability 55 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 40 L/kg4.8 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.
E335 +N vs E335 QT-200HB — frequently asked
Is E335 QT-200HB stronger than E335 +N?
Yes. E335 QT-200HB has a typical yield strength of 470 MPa (68.2 ksi) against 360 MPa (52.2 ksi) for E335 +N — about 31% more. Tensile strength is 700 MPa (102 ksi) vs 610 MPa (88.5 ksi).
Which condition does FabDigit quote by default, +N or QT-200HB?
+AR is the default E335 condition in the FabDigit quote flow (neither +N nor QT-200HB). 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, E335 +N or E335 QT-200HB?
E335 +N. Its machinability rates good (58/100) against fair (53/100) for E335 QT-200HB; for welding the order is E335 +N first (fair, 48/100) then E335 QT-200HB (fair, 38/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in E335 +N and E335 QT-200HB 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.