Stainless Steel 1.4837 vs ZG40Cr25Ni12Si2
Stainless Steel · grade comparison
Stainless Steel 1.4837 and ZG40Cr25Ni12Si2 are both stainless steel grades. ZG40Cr25Ni12Si2 is the stronger of the two: yield strength 310 MPa (45 ksi) against 265 MPa (38.4 ksi) for 1.4837, about 17% more; tensile strength follows at 600 MPa (87 ksi) vs 520 MPa (75.4 ksi). ZG40Cr25Ni12Si2 is the more ductile: elongation 18% versus 12% for 1.4837.
ZG40Cr25Ni12Si2Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
1.4837 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.
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 185 GPa26.8 Msi · Shear Modulus 72 GPa10.4 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Liquidus Temperature
Same in both: Density 7.7 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,370°C2,498 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Thermal Conductivity 14.5 W/m·K8.4 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Max Service Temperature (continuous) 1,050°C1,922 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.9 % IACS · Electrical Resistivity 9×10⁻⁷ Ω·m35.4 µΩ·in
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
Brazeability / Solderability
Same in both: Weldability 40 / 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)
Modulus of Resilience
Same in both: Specific Stiffness (E / density) 24 MN·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 | 1.4837 | ZG40Cr25Ni12Si2 |
|---|---|---|
| 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.
1.4837 vs ZG40Cr25Ni12Si2 — frequently asked
Is ZG40Cr25Ni12Si2 stronger than 1.4837?
Yes. ZG40Cr25Ni12Si2 has a typical yield strength of 310 MPa (45 ksi) against 265 MPa (38.4 ksi) for 1.4837 — about 17% more. Tensile strength is 600 MPa (87 ksi) vs 520 MPa (75.4 ksi).
Which is cheaper, 1.4837 or ZG40Cr25Ni12Si2?
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, 1.4837 or ZG40Cr25Ni12Si2?
ZG40Cr25Ni12Si2, by a small margin. Both rate poor for machinability — 28/100 against 22/100 for 1.4837.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4837 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.