Stainless Steel 422 Hardened & Tempered vs 422 N&T
Stainless Steel · 422 temper comparison
422 Hardened & Tempered and 422 N&T are two conditions of the same stainless steel grade, 422: Hardened & Tempered (quenched and tempered) versus N&T (normalized and tempered). The chemistry is identical, so every difference below comes from the condition. 422 Hardened & Tempered is the stronger of the two: yield strength 860 MPa (125 ksi) against 790 MPa (115 ksi) for 422 N&T, about 9% more; tensile strength follows at 1,030 MPa (149 ksi) vs 960 MPa (139 ksi). 422 Hardened & Tempered is stiffer (213 GPa vs 200 GPa).
422 Hardened & TemperedChoose it when strength drives the design.
422 Hardened & Tempered vs 422 N&T: 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 N&T
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
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Shear Modulus 83 GPa12 Msi · Bulk Modulus 162 GPa23.5 Msi · Poisson's Ratio 0.29 · Hardness, Rockwell C 32 HRC
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.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F · 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.
Same in both: Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
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 Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Machinability 35 / 100 · 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 N&T — frequently asked
Is 422 Hardened & Tempered stronger than 422 N&T?
Yes. 422 Hardened & Tempered has a typical yield strength of 860 MPa (125 ksi) against 790 MPa (115 ksi) for 422 N&T — about 9% more. Tensile strength is 1,030 MPa (149 ksi) vs 960 MPa (139 ksi).
Which condition does FabDigit quote by default, Hardened & Tempered or N&T?
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.
When should I choose 422 Hardened & Tempered over 422 N&T?
Pick 422 Hardened & Tempered when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 422 Hardened & Tempered and 422 N&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.