Stainless Steel 422 Hardened & Tempered vs 422 Hot Rolled
Stainless Steel · 422 temper comparison
422 Hardened & Tempered and 422 Hot Rolled are two conditions of the same stainless steel grade, 422: Hardened & Tempered (quenched and tempered) versus Hot Rolled. The chemistry is identical, so every difference below comes from the condition. 422 Hot Rolled is the stronger of the two: tensile strength 1,150 MPa (167 ksi) against 1,030 MPa (149 ksi) for 422 Hardened & Tempered, about 12% more. In exchange, 422 Hardened & Tempered is the more ductile: elongation 16% versus 12% for 422 Hot Rolled, and 422 Hot Rolled is harder (350 HB vs 302 HB). 422 Hardened & Tempered is stiffer (213 GPa vs 200 GPa) and 422 Hardened & Tempered runs hotter in service (650°C vs 450°C continuous). On the shop floor, 422 Hardened & Tempered welds better (30 vs 15 out of 100).
422 Hardened & TemperedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
422 Hot RolledChoose it when strength drives the design.
422 Hardened & Tempered vs 422 Hot Rolled: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless 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 stainless 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.
422 Hardened & Tempered422 Hot Rolled
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 83 GPa12 Msi · Bulk Modulus 162 GPa23.5 Msi · Poisson's Ratio 0.29 · Fatigue Strength (Endurance Limit) 500 MPa72.5 ksi
Physical
Density and transition temperatures.
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °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) 11.2 µm/m·K6.2 µin/in·°F · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.3 V
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 40 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb · Embodied Carbon (primary production) 3.5 kg CO₂/kg · Embodied Water 120 L/kg14.4 gal/lb · Typical Recycled Content 40%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
422 Hardened & Tempered vs 422 Hot Rolled — frequently asked
Is 422 Hot Rolled stronger than 422 Hardened & Tempered?
Yes. 422 Hot Rolled has a typical tensile strength of 1,150 MPa (167 ksi) against 1,030 MPa (149 ksi) for 422 Hardened & Tempered — about 12% more.
Which condition does FabDigit quote by default, Hardened & Tempered or Hot Rolled?
Hardened & Tempered is the default 422 condition in the FabDigit quote flow. 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, 422 Hardened & Tempered or 422 Hot Rolled?
422 Hardened & Tempered. Its machinability rates fair (35/100) against poor (26/100) for 422 Hot Rolled; for welding the order is 422 Hardened & Tempered first (poor, 30/100) then 422 Hot Rolled (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 422 Hardened & Tempered and 422 Hot Rolled 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.