Stainless Steel 1.4837 vs ZG40Cr25Ni20Si2
Stainless Steel · grade comparison
Stainless Steel 1.4837 and ZG40Cr25Ni20Si2 are both stainless steel grades. 1.4837 is the stronger of the two: yield strength 265 MPa (38.4 ksi) against 250 MPa (36.3 ksi) for ZG40Cr25Ni20Si2, about 6% more; tensile strength follows at 520 MPa (75.4 ksi) vs 480 MPa (69.6 ksi). 1.4837 is the more ductile: elongation 12% versus 10% for ZG40Cr25Ni20Si2.
1.4837Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
1.4837 vs ZG40Cr25Ni20Si2: 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)
Charpy V-Notch Impact (RT)
Fracture Toughness (K_IC)
Same in both: Elastic (Young's) Modulus 185 GPa26.8 Msi · Shear Modulus 72 GPa10.4 Msi · Hardness, Brinell 190 HB · Hardness, Rockwell B 92 HRB · Hardness, Vickers 200 HV
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)
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -50°C-58 °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)
Same in both: Corrosion Resistance 62 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Castability
Polishability
Brazeability / Solderability
Same in both: Machinability Rating (AISI 1212 = 100 %) 25% · Weldability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb
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 | 1.4837 | ZG40Cr25Ni20Si2 |
|---|---|---|
| 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 ZG40Cr25Ni20Si2 — frequently asked
Is 1.4837 stronger than ZG40Cr25Ni20Si2?
Yes. 1.4837 has a typical yield strength of 265 MPa (38.4 ksi) against 250 MPa (36.3 ksi) for ZG40Cr25Ni20Si2 — about 6% more. Tensile strength is 520 MPa (75.4 ksi) vs 480 MPa (69.6 ksi).
Which is cheaper, 1.4837 or ZG40Cr25Ni20Si2?
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.
When should I choose 1.4837 over ZG40Cr25Ni20Si2?
Pick 1.4837 when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4837 and ZG40Cr25Ni20Si2 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.