Stainless Steel 1.4855 vs 1.4857
Stainless Steel · grade comparison
Stainless Steel 1.4855 and 1.4857 are both stainless steel grades. Both yield at about 250 MPa — strength does not separate them. 1.4855 conducts heat better (15 W/m·K vs 13 W/m·K). On the shop floor, 1.4855 welds better (good vs fair).
1.4855Choose it when it will be welded.
1.4855 vs 1.4857: 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)
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 175 GPa25.4 Msi · Shear Modulus 68 GPa9.9 Msi · Poisson's Ratio 0.29 · Yield Strength (0.2% offset) 250 MPa36.3 ksi · Elongation at Break 10% · Charpy V-Notch Impact (RT) 12 J8.9 ft·lbf · Hardness, Brinell 190 HB · Hardness, Rockwell B 91 HRB
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Same in both: Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Min Service Temperature
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 1,100°C2,012 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Galvanic Potential (seawater, vs SCE)
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Machinability 25 / 100 · Machinability Rating (AISI 1212 = 100 %) 15% · 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)
Thermal Diffusivity
Same in both: Modulus of Resilience 179 kJ/m³ · Thermal Shock Resistance Index 2
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 | 1.4855 | 1.4857 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
1.4855 vs 1.4857 — frequently asked
What is the difference between 1.4855 and 1.4857?
Stainless Steel 1.4855 and 1.4857 are both stainless steel grades. Both yield at about 250 MPa — strength does not separate them. 1.4855 conducts heat better (15 W/m·K vs 13 W/m·K).
Which is cheaper, 1.4855 or 1.4857?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, 1.4855 or 1.4857?
1.4855. Its weldability rates good (55/100) against fair (45/100) for 1.4857.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4855 and 1.4857 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.