Stainless Steel 1.4309 vs 1.4849
Stainless Steel · grade comparison
Stainless Steel 1.4309 and 1.4849 are both stainless steel grades. 1.4309 is the stronger of the two: tensile strength 520 MPa (75.4 ksi) against 490 MPa (71.1 ksi) for 1.4849, about 6% more. 1.4309 is the more ductile: elongation 55% versus 10% for 1.4849, and 1.4849 is harder (180 HB vs 140 HB). 1.4309 is stiffer (195 GPa vs 170 GPa) and 1.4849 runs hotter in service (1,050°C vs 425°C continuous). On the shop floor, 1.4309 machines more easily (fair vs poor), 1.4309 welds better (excellent vs good), and 1.4309 sits in a lower cost tier (premium, $$$) than 1.4849 (high, $$$$).
1.4309Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
1.4849Choose it when the part sees heat.
1.4309 vs 1.4849: 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
Tensile Strength (Ultimate)
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
Same in both: Bulk Modulus 140 GPa20.3 Msi · Poisson's Ratio 0.29 · Yield Strength (0.2% offset) 250 MPa36.3 ksi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 7.9 g/cm³0.29 lb/in³
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 500 J/kg·K0.12 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)
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 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 | 1.4309 | 1.4849 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
1.4309 vs 1.4849 — frequently asked
Is 1.4309 stronger than 1.4849?
Yes. 1.4309 has a typical tensile strength of 520 MPa (75.4 ksi) against 490 MPa (71.1 ksi) for 1.4849 — about 6% more.
Which is cheaper, 1.4309 or 1.4849?
1.4309 is the lower-cost material: it sits in the premium tier ($$$) while 1.4849 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, 1.4309 or 1.4849?
1.4309. Its machinability rates fair (42/100) against poor (20/100) for 1.4849; for welding the order is 1.4309 first (excellent, 92/100) then 1.4849 (good, 55/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4309 and 1.4849 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.