Stainless Steel 1.4451 vs 1.4849
Stainless Steel · grade comparison
Stainless Steel 1.4451 and 1.4849 are both stainless steel grades. 1.4451 is the stronger of the two: yield strength 510 MPa (74 ksi) against 250 MPa (36.3 ksi) for 1.4849, about 104% more; tensile strength follows at 700 MPa (102 ksi) vs 490 MPa (71.1 ksi). 1.4451 is the more ductile: elongation 22% versus 10% for 1.4849, and 1.4451 is harder (245 HB vs 180 HB). 1.4451 is stiffer (200 GPa vs 170 GPa) and 1.4849 runs hotter in service (1,050°C vs 280°C continuous). On the shop floor, 1.4451 machines more easily (30 vs 20 out of 100).
1.4451Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
1.4849Choose it when the part sees heat.
1.4451 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
Bulk 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, Rockwell C
Hardness, Vickers
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
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Same in both: 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 %)
Formability (cold)
Castability
Polishability
Same in both: Weldability 55 / 100 · Brazeability / Solderability 35 / 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 | 1.4451 | 1.4849 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
1.4451 vs 1.4849 — frequently asked
Is 1.4451 stronger than 1.4849?
Yes. 1.4451 has a typical yield strength of 510 MPa (74 ksi) against 250 MPa (36.3 ksi) for 1.4849 — about 104% more. Tensile strength is 700 MPa (102 ksi) vs 490 MPa (71.1 ksi).
Which is cheaper, 1.4451 or 1.4849?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 1.4451 or 1.4849?
1.4451, by a small margin. Both rate poor for machinability — 30/100 against 20/100 for 1.4849.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4451 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.