Steel AerMet 310 vs Custom 455
Steel · grade comparison
Steel AerMet 310 and Custom 455 are both steel grades. AerMet 310 is the stronger of the two: yield strength 1,960 MPa (284 ksi) against 1,450 MPa (210 ksi) for Custom 455, about 35% more; tensile strength follows at 2,140 MPa (310 ksi) vs 1,550 MPa (225 ksi). In exchange, Custom 455 is the more ductile: elongation 12% versus 10% for AerMet 310, and AerMet 310 is harder (57 HRC vs 46 HRC). Custom 455 is lighter (7.76 g/cm³ vs 8 g/cm³ for AerMet 310) and AerMet 310 conducts heat better (20 W/m·K vs 17.6 W/m·K). On the shop floor, Custom 455 machines more easily (25 vs 15 out of 100).
AerMet 310Choose it when strength drives the design.
Custom 455Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
AerMet 310 vs Custom 455: 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.
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
Hardness, Brinell
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.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Min Service Temperature -73°C-99 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Electrical Conductivity
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)
Brazeability / Solderability
Polishability
Castability
Same in both: Weldability 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)
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 | AerMet 310 | Custom 455 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.
AerMet 310 vs Custom 455 — frequently asked
Is AerMet 310 stronger than Custom 455?
Yes. AerMet 310 has a typical yield strength of 1,960 MPa (284 ksi) against 1,450 MPa (210 ksi) for Custom 455 — about 35% more. Tensile strength is 2,140 MPa (310 ksi) vs 1,550 MPa (225 ksi).
Which is cheaper, AerMet 310 or Custom 455?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, AerMet 310 or Custom 455?
Custom 455, by a small margin. Both rate poor for machinability — 25/100 against 15/100 for AerMet 310.
Ready to make it?
Upload a CAD file and FabDigit prices the part in AerMet 310 and Custom 455 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.