Stainless Steel 2304 vs S32520
Stainless Steel · grade comparison
Stainless Steel 2304 and S32520 are both stainless steel grades. S32520 is the stronger of the two: yield strength 620 MPa (89.9 ksi) against 460 MPa (66.7 ksi) for 2304, about 35% more; tensile strength follows at 850 MPa (123 ksi) vs 680 MPa (98.6 ksi). S32520 is harder — 260 HB against 240 HB for 2304 — which matters for wear surfaces and threads. On the shop floor, 2304 forms better (good vs fair) and 2304 sits in a lower cost tier (premium, $$$) than S32520 (high, $$$$).
2304Choose it when cost is the deciding factor.
S32520Choose it when strength drives the design, or when surface hardness matters.
2304 vs S32520: 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.
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Compressive Strength
Shear Strength
Hardness, Brinell
Hardness, Rockwell B
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Poisson's Ratio 0.3 · Elongation at Break 30% · Reduction in Area 55% · Fatigue Strength (Endurance Limit) 400 MPa58 ksi · Fracture Toughness (K_IC) 120 MPa·√m109 ksi·√in · Charpy V-Notch Impact (RT) 220 J162 ft·lbf
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 1,385°C2,525 °F · Liquidus Temperature 1,445°C2,633 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Same in both: Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -50°C-58 °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
Same in both: Polishability 70 / 100
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 | 2304 | S32520 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | Solution Annealed | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| AlCrN | Yes | — |
| AlTiN | Yes | — |
| Black Oxide | Yes | — |
| CVD Al2O3 | Yes | — |
| CVD TiCN | Yes | — |
| CVD TiN | Yes | — |
| Cerakote | Yes | — |
| Chrome Plating | Yes | — |
| CrN | Yes | — |
| DLC | Yes | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
| MoS2 | Yes | — |
| Multilayer CVD | Yes | — |
| Nickel Plating | Yes | — |
| PTFE Coating | Yes | — |
| Painting | Yes | — |
| Passivation (Stainless Steel) | Yes | — |
They share 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
2304 vs S32520 — frequently asked
Is S32520 stronger than 2304?
Yes. S32520 has a typical yield strength of 620 MPa (89.9 ksi) against 460 MPa (66.7 ksi) for 2304 — about 35% more. Tensile strength is 850 MPa (123 ksi) vs 680 MPa (98.6 ksi).
Which is cheaper, 2304 or S32520?
2304 is the lower-cost material: it sits in the premium tier ($$$) while S32520 is high ($$$$). 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, 2304 or S32520?
2304. Its machinability rates fair (35/100) against poor (28/100) for S32520.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2304 and S32520 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.