Stainless Steel 410 vs 420V
Stainless Steel · grade comparison
Stainless Steel 410 and 420V are both stainless steel grades. 420V is the stronger of the two: yield strength 600 MPa (87 ksi) against 310 MPa (45 ksi) for 410, about 94% more; tensile strength follows at 900 MPa (131 ksi) vs 517 MPa (75 ksi). In exchange, 410 is the more ductile: elongation 25% versus 8% for 420V, and 420V is harder (255 HB vs 155 HB). 420V is lighter (7.39 g/cm³ vs 7.7 g/cm³ for 410) and 410 runs hotter in service (650°C vs 400°C continuous). On the shop floor, 410 machines more easily (good vs poor), 410 welds better (fair vs not recommended), and 410 sits in a lower cost tier (premium, $$$) than 420V (specialty, $$$$$).
410Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
420VChoose it when strength drives the design, or when weight is the constraint.
410 vs 420V: 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Poisson's Ratio
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
Hardness, Rockwell C
Same in both: Bulk Modulus 160 GPa23.2 Msi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Latent Heat of Fusion 270 J/g116 BTU/lb
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 45 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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.
Manufacturing and finishing
| Capability | 410 | 420V |
|---|---|---|
| Sheet metal | Yes | — |
| Default condition | Annealed | Annealed |
| Relative cost | $$$ Premium | $$$$$ Specialty |
| Min. machined wall | 0.8 mm | 0.8 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
Both are offered for CNC machining. Both take the same 32 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, CrN, DLC, Electroless Nickel (EN), Electropolishing and 20 more.
410 vs 420V — frequently asked
Is 420V stronger than 410?
Yes. 420V has a typical yield strength of 600 MPa (87 ksi) against 310 MPa (45 ksi) for 410 — about 94% more. Tensile strength is 900 MPa (131 ksi) vs 517 MPa (75 ksi).
Which is cheaper, 410 or 420V?
410 is the lower-cost material: it sits in the premium tier ($$$) while 420V is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, 410 or 420V?
410. Its machinability rates good (55/100) against poor (15/100) for 420V; for welding the order is 410 first (fair, 45/100) then 420V (not recommended, 12/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 410 and 420V 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.