Steel A387 Gr 22 Annealed vs A387 Gr 22 Q&T
Steel · A387 Gr 22 temper comparison
A387 Gr 22 Annealed and A387 Gr 22 Q&T are two conditions of the same steel grade, A387 Gr 22: Annealed versus Q&T (quenched and tempered). The chemistry is identical, so every difference below comes from the condition. A387 Gr 22 Q&T is the stronger of the two: yield strength 460 MPa (66.7 ksi) against 260 MPa (37.7 ksi) for A387 Gr 22 Annealed, about 77% more; tensile strength follows at 620 MPa (89.9 ksi) vs 470 MPa (68.2 ksi). In exchange, A387 Gr 22 Annealed is the more ductile: elongation 28% versus 22% for A387 Gr 22 Q&T, and A387 Gr 22 Q&T is harder (200 HB vs 145 HB).
A387 Gr 22 AnnealedChoose it when the part is bent, formed or impact-loaded.
A387 Gr 22 Q&TChoose it when strength drives the design.
A387 Gr 22 Annealed vs A387 Gr 22 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.
A387 Gr 22 AnnealedA387 Gr 22 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 207 GPa30 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) 1,450°C2,642 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
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 · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 16 / 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 45 / 100 · Polishability 45 / 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 60 L/kg7.2 gal/lb · Typical Recycled Content 25%
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.
A387 Gr 22 Annealed vs A387 Gr 22 Q&T — frequently asked
Is A387 Gr 22 Q&T stronger than A387 Gr 22 Annealed?
Yes. A387 Gr 22 Q&T has a typical yield strength of 460 MPa (66.7 ksi) against 260 MPa (37.7 ksi) for A387 Gr 22 Annealed — about 77% more. Tensile strength is 620 MPa (89.9 ksi) vs 470 MPa (68.2 ksi).
Which condition does FabDigit quote by default, Annealed or Q&T?
N&T is the default A387 Gr 22 condition in the FabDigit quote flow (neither Annealed 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, A387 Gr 22 Annealed or A387 Gr 22 Q&T?
A387 Gr 22 Annealed. Its machinability rates good (58/100) against fair (50/100) for A387 Gr 22 Q&T.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A387 Gr 22 Annealed and A387 Gr 22 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.