Steel 18Ni(350) Maraging Steel vs AerMet 310
Steel · grade comparison
Steel 18Ni(350) Maraging Steel and AerMet 310 are both steel grades. 18Ni(350) Maraging Steel is the stronger of the two: yield strength 2,320 MPa (336 ksi) against 1,960 MPa (284 ksi) for AerMet 310, about 18% more; tensile strength follows at 2,400 MPa (348 ksi) vs 2,140 MPa (310 ksi). In exchange, AerMet 310 is the more ductile: elongation 10% versus 7% for 18Ni(350) Maraging Steel. On the shop floor, 18Ni(350) Maraging Steel welds better (good vs fair).
18Ni(350) Maraging SteelChoose it when strength drives the design, or when it will be welded.
AerMet 310Choose it when the part is bent, formed or impact-loaded.
18Ni(350) Maraging Steel vs AerMet 310: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all 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 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.
18Ni(350) Maraging SteelAerMet 310
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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Thermal Conductivity 20 W/m·K11.6 BTU/hr·ft·°F · Max Service Temperature (continuous) 400°C752 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
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 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 20%
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 steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | 18Ni(350) Maraging Steel | AerMet 310 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.
18Ni(350) Maraging Steel vs AerMet 310 — frequently asked
Is 18Ni(350) Maraging Steel stronger than AerMet 310?
Yes. 18Ni(350) Maraging Steel has a typical yield strength of 2,320 MPa (336 ksi) against 1,960 MPa (284 ksi) for AerMet 310 — about 18% more. Tensile strength is 2,400 MPa (348 ksi) vs 2,140 MPa (310 ksi).
Which is cheaper, 18Ni(350) Maraging Steel or AerMet 310?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 18Ni(350) Maraging Steel or AerMet 310?
18Ni(350) Maraging Steel, by a small margin. Both rate poor for machinability — 22/100 against 15/100 for AerMet 310; for welding the order is 18Ni(350) Maraging Steel first (good, 55/100) then AerMet 310 (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 18Ni(350) Maraging Steel and AerMet 310 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.