Steel 5132-IH vs 5132-QT205
Steel · 5132 temper comparison
5132-IH and 5132-QT205 are two conditions of the same steel grade, 5132: IH (induction hardened) versus QT205 (Q&T 205 °C). The chemistry is identical, so every difference below comes from the condition. 5132-QT205 is the stronger of the two: yield strength 1,500 MPa (218 ksi) against 900 MPa (131 ksi) for 5132-IH, about 67% more; tensile strength follows at 1,740 MPa (252 ksi) vs 1,050 MPa (152 ksi). In exchange, 5132-IH is the more ductile: elongation 14% versus 10% for 5132-QT205, and 5132-QT205 is harder (480 HB vs 320 HB). 5132-IH runs hotter in service (200°C vs 180°C continuous) and 5132-QT205 conducts electricity better (7.8 % IACS vs 6.8 % IACS). On the shop floor, 5132-QT205 machines more easily (25 vs 15 out of 100).
5132-IHChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
5132-QT205Choose it when strength drives the design, or when the part is machined in volume.
5132-IH vs 5132-QT205: 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, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Hardness, Rockwell B 88 HRB
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 1,500°C2,732 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 475 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.2 µm/m·K6.8 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · 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) -0.61 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 30 / 100 · Brazeability / Solderability 60 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.1 kg CO₂/kg · Embodied Water 45 L/kg5.4 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.
5132-IH vs 5132-QT205 — frequently asked
Is 5132-QT205 stronger than 5132-IH?
Yes. 5132-QT205 has a typical yield strength of 1,500 MPa (218 ksi) against 900 MPa (131 ksi) for 5132-IH — about 67% more. Tensile strength is 1,740 MPa (252 ksi) vs 1,050 MPa (152 ksi).
Which condition does FabDigit quote by default, IH or QT205?
A is the default 5132 condition in the FabDigit quote flow (neither IH nor QT205). 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, 5132-IH or 5132-QT205?
5132-QT205, by a small margin. Both rate poor for machinability — 25/100 against 15/100 for 5132-IH; for welding the order is 5132-QT205 first (poor, 20/100) then 5132-IH (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 5132-IH and 5132-QT205 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.