Stainless Steel 1.4107 vs 1.4729
Stainless Steel · grade comparison
Stainless Steel 1.4107 and 1.4729 are both stainless steel grades. 1.4729 is the stronger of the two: tensile strength 680 MPa (98.6 ksi) against 610 MPa (88.5 ksi) for 1.4107, about 11% more. In exchange, 1.4107 is the more ductile: elongation 22% versus 10% for 1.4729, and 1.4729 is harder (230 HB vs 185 HB). 1.4729 runs hotter in service (850°C vs 400°C continuous) and 1.4107 conducts electricity better (2.9 % IACS vs 2.5 % IACS). On the shop floor, 1.4107 machines more easily (45 vs 35 out of 100) and 1.4107 welds better (very good vs poor).
1.4107Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
1.4729Choose it when strength drives the design, or when the part sees heat.
1.4107 vs 1.4729: 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
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, Vickers
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 215 GPa31.2 Msi · Shear Modulus 83 GPa12 Msi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 7.7 g/cm³0.28 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.5 µm/m·K5.8 µin/in·°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 Carbon (primary production)
Embodied Water
Same in both: Embodied Energy (primary production) 45 MJ/kg19,347 BTU/lb · Typical Recycled Content 70%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Specific Stiffness (E / density) 27.9 MN·m/kg · Thermal Shock Resistance Index 7
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 | 1.4107 | 1.4729 |
|---|---|---|
| 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.
1.4107 vs 1.4729 — frequently asked
Is 1.4729 stronger than 1.4107?
Yes. 1.4729 has a typical tensile strength of 680 MPa (98.6 ksi) against 610 MPa (88.5 ksi) for 1.4107 — about 11% more.
Which is cheaper, 1.4107 or 1.4729?
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, 1.4107 or 1.4729?
1.4107, by a small margin. Both rate fair for machinability — 45/100 against 35/100 for 1.4729; for welding the order is 1.4107 first (very good, 70/100) then 1.4729 (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4107 and 1.4729 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.