Stainless Steel 202 vs 304
Stainless Steel · grade comparison
Stainless Steel 202 and 304 are both stainless steel grades, both multipurpose ss. 202 is the stronger of the two: yield strength 345 MPa (50 ksi) against 250 MPa (36.3 ksi) for 304, about 38% more; tensile strength follows at 655 MPa (95 ksi) vs 585 MPa (84.8 ksi). 202 is harder — 190 HB against 150 HB for 304 — which matters for wear surfaces and threads. 304 runs hotter in service (870°C vs 760°C continuous). On the shop floor, 304 welds better (excellent vs good), 304 forms better (excellent vs very good), and 304 sits in a lower cost tier (standard, $$) than 202 (premium, $$$).
202Choose it when strength drives the design, or when surface hardness matters.
304Choose it when the part sees heat, or when it will be welded.
202 vs 304: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Fracture Toughness (K_IC)
Same in both: Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 152 GPa22 Msi · Poisson's Ratio 0.29 · Elongation at Break 55%
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 16.2 W/m·K9.4 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
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
Same in both: Thermal Shock Resistance Index 3
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 | 202 | 304 |
|---|---|---|
| Casting & forging | — | Yes |
| Default condition | Annealed | Annealed |
| Relative cost | $$$ Premium | $$ Standard |
| 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 and Sheet metal. 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.
202 vs 304 — frequently asked
Is 202 stronger than 304?
Yes. 202 has a typical yield strength of 345 MPa (50 ksi) against 250 MPa (36.3 ksi) for 304 — about 38% more. Tensile strength is 655 MPa (95 ksi) vs 585 MPa (84.8 ksi).
Which is cheaper, 202 or 304?
304 is the lower-cost material: it sits in the standard tier ($$) while 202 is premium ($$$). 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, 202 or 304?
304, by a small margin. Both rate fair for machinability — 45/100 against 38/100 for 202; for welding the order is 304 first (excellent, 88/100) then 202 (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 202 and 304 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.