Stainless Steel 1.4849 vs CN7M
Stainless Steel · grade comparison
Stainless Steel 1.4849 and CN7M are both stainless steel grades. 1.4849 is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 220 MPa (31.9 ksi) for CN7M, about 14% more. In exchange, CN7M is the more ductile: elongation 45% versus 10% for 1.4849, and 1.4849 is harder (180 HB vs 140 HB). CN7M is stiffer (180 GPa vs 170 GPa) and 1.4849 runs hotter in service (1,050°C vs 500°C continuous). On the shop floor, CN7M machines more easily (fair vs poor) and CN7M welds better (very good vs good).
1.4849Choose it when strength drives the design, or when the part sees heat.
CN7MChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
1.4849 vs CN7M: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Charpy V-Notch Impact (RT)
Hardness, Brinell
Compressive Strength
Fracture Toughness (K_IC)
Hardness, Rockwell B
Hardness, Vickers
Same in both: Fatigue Strength (Endurance Limit) 190 MPa27.6 ksi
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
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°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
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 120 L/kg14.4 gal/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 | 1.4849 | CN7M |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.
1.4849 vs CN7M — frequently asked
Is 1.4849 stronger than CN7M?
Yes. 1.4849 has a typical yield strength of 250 MPa (36.3 ksi) against 220 MPa (31.9 ksi) for CN7M — about 14% more. Tensile strength is 490 MPa (71.1 ksi) vs 480 MPa (69.6 ksi).
Which is cheaper, 1.4849 or CN7M?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 1.4849 or CN7M?
CN7M. Its machinability rates fair (35/100) against poor (20/100) for 1.4849; for welding the order is CN7M first (very good, 70/100) then 1.4849 (good, 55/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4849 and CN7M 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.