Stainless Steel 1.4408 vs 1.4837
Stainless Steel · grade comparison
Stainless Steel 1.4408 and 1.4837 are both stainless steel grades. Both yield at about 260 MPa — strength does not separate them. 1.4408 is the more ductile: elongation 45% versus 12% for 1.4837, and 1.4837 is harder (190 HB vs 160 HB). 1.4837 runs hotter in service (1,050°C vs 800°C continuous) and 1.4408 conducts electricity better (2.3 % IACS vs 1.9 % IACS). On the shop floor, 1.4408 machines more easily (fair vs poor) and 1.4408 welds better (very good vs fair).
1.4408Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
1.4837Choose it when the part sees heat.
1.4408 vs 1.4837: 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
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Compressive Strength
Same in both: Bulk Modulus 150 GPa21.8 Msi · Shear Strength 340 MPa49.3 ksi
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 1,370°C2,498 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16 µm/m·K8.9 µin/in·°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)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Castability
Brazeability / Solderability
Polishability
Formability (cold)
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 Stiffness (E / density)
Modulus of Resilience
Same in both: Specific Strength (UTS / density) 68 kN·m/kg · Thermal Diffusivity 3.8 mm²/s · 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 | 1.4408 | 1.4837 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
1.4408 vs 1.4837 — frequently asked
What is the difference between 1.4408 and 1.4837?
Stainless Steel 1.4408 and 1.4837 are both stainless steel grades. Both yield at about 260 MPa — strength does not separate them. 1.4408 is the more ductile: elongation 45% versus 12% for 1.4837, and 1.4837 is harder (190 HB vs 160 HB).
Which is cheaper, 1.4408 or 1.4837?
Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 1.4408 or 1.4837?
1.4408. Its machinability rates fair (35/100) against poor (22/100) for 1.4837; for welding the order is 1.4408 first (very good, 75/100) then 1.4837 (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4408 and 1.4837 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.