Stainless Steel 1.4849 vs ZG40Cr25Ni12Si2
Stainless Steel · grade comparison
Stainless Steel 1.4849 and ZG40Cr25Ni12Si2 are both stainless steel grades. ZG40Cr25Ni12Si2 is the stronger of the two: yield strength 310 MPa (45 ksi) against 250 MPa (36.3 ksi) for 1.4849, about 24% more; tensile strength follows at 600 MPa (87 ksi) vs 490 MPa (71.1 ksi). ZG40Cr25Ni12Si2 is the more ductile: elongation 18% versus 10% for 1.4849. ZG40Cr25Ni12Si2 is stiffer (185 GPa vs 170 GPa) and ZG40Cr25Ni12Si2 conducts electricity better (1.9 % IACS vs 1.7 % IACS). On the shop floor, 1.4849 welds better (good vs fair) and ZG40Cr25Ni12Si2 sits in a lower cost tier (premium, $$$) than 1.4849 (high, $$$$).
1.4849Choose it when it will be welded.
ZG40Cr25Ni12Si2Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
1.4849 vs ZG40Cr25Ni12Si2: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Compressive Strength
Hardness, Rockwell B
Hardness, Vickers
Same in both: Poisson's Ratio 0.29
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
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Max Service Temperature (continuous) 1,050°C1,922 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Same in both: Brazeability / Solderability 35 / 100 · Polishability 45 / 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
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 | 1.4849 | ZG40Cr25Ni12Si2 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$ 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.
1.4849 vs ZG40Cr25Ni12Si2 — frequently asked
Is ZG40Cr25Ni12Si2 stronger than 1.4849?
Yes. ZG40Cr25Ni12Si2 has a typical yield strength of 310 MPa (45 ksi) against 250 MPa (36.3 ksi) for 1.4849 — about 24% more. Tensile strength is 600 MPa (87 ksi) vs 490 MPa (71.1 ksi).
Which is cheaper, 1.4849 or ZG40Cr25Ni12Si2?
ZG40Cr25Ni12Si2 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, 1.4849 or ZG40Cr25Ni12Si2?
ZG40Cr25Ni12Si2, by a small margin. Both rate poor for machinability — 28/100 against 20/100 for 1.4849; for welding the order is 1.4849 first (good, 55/100) then ZG40Cr25Ni12Si2 (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4849 and ZG40Cr25Ni12Si2 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.