Stainless Steel 15-7 Mo vs Custom 465
Stainless Steel · grade comparison
Stainless Steel 15-7 Mo and Custom 465 are both stainless steel grades, both high strength ss. Custom 465 is the stronger of the two: yield strength 795 MPa (115 ksi) against 415 MPa (60.2 ksi) for 15-7 Mo, about 92% more; tensile strength follows at 1,000 MPa (145 ksi) vs 950 MPa (138 ksi). In exchange, 15-7 Mo is the more ductile: elongation 25% versus 15% for Custom 465, and Custom 465 is harder (30 HRC vs 13 HRC).
15-7 MoChoose it when the part is bent, formed or impact-loaded.
Custom 465Choose it when strength drives the design.
15-7 Mo vs Custom 465: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Rockwell C
Hardness, Vickers
Fracture Toughness (K_IC)
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Charpy V-Notch Impact (RT) 90 J66.4 ft·lbf
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,440°C2,624 °F
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 460 J/kg·K0.11 BTU/lb·°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)
Brazeability / Solderability
Polishability
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 stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | 15-7 Mo | Custom 465 |
|---|---|---|
| Default condition | Condition A | Condition A |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | 0.8 mm | 0.8 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
Both are offered for CNC machining and Sheet metal. Both take the same 32 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, CrN, DLC, Electroless Nickel (EN), Electropolishing and 20 more.
15-7 Mo vs Custom 465 — frequently asked
Is Custom 465 stronger than 15-7 Mo?
Yes. Custom 465 has a typical yield strength of 795 MPa (115 ksi) against 415 MPa (60.2 ksi) for 15-7 Mo — about 92% more. Tensile strength is 1,000 MPa (145 ksi) vs 950 MPa (138 ksi).
Which is cheaper, 15-7 Mo or Custom 465?
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.
Which is easier to machine, 15-7 Mo or Custom 465?
15-7 Mo, by a small margin. Both rate fair for machinability — 45/100 against 38/100 for Custom 465; for welding the order is Custom 465 first (good, 55/100) then 15-7 Mo (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 15-7 Mo and Custom 465 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.