Stainless Steel 15-5 PH vs Custom 465
Stainless Steel · grade comparison
Stainless Steel 15-5 PH and Custom 465 are both stainless steel grades, both high strength ss. Both yield at about 795 MPa — strength does not separate them. 15-5 PH is harder — 33 HRC against 30 HRC for Custom 465 — which matters for wear surfaces and threads. Custom 465 runs hotter in service (400°C vs 300°C continuous). On the shop floor, 15-5 PH welds better (very good vs good) and Custom 465 sits in a lower cost tier (premium, $$$) than 15-5 PH (specialty, $$$$$).
15-5 PHChoose it when surface hardness matters, or when it will be welded.
Custom 465Choose it when the part sees heat, or when cost is the deciding factor.
15-5 PH 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.
Elastic (Young's) Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 77 GPa11.2 Msi · Yield Strength (0.2% offset) 795 MPa115 ksi · Reduction in Area 55%
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
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 57 / 100
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
Same in both: Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 35%
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 | 15-5 PH | Custom 465 |
|---|---|---|
| 3D printing | Yes | — |
| Default condition | Condition A | Condition A |
| Relative cost | $$$$$ Specialty | $$$ Premium |
| Min. machined wall | 0.8 mm | 0.8 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
| Electropolished (Metal AM) | Yes | — |
| Passivated (Metal AM) | Yes | — |
| Plated (Metal AM) | Yes | — |
Both are offered for CNC machining and Sheet metal. They share 32 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, CrN, DLC, Electroless Nickel (EN), Electropolishing and 20 more.
15-5 PH vs Custom 465 — frequently asked
What is the difference between 15-5 PH and Custom 465?
Stainless Steel 15-5 PH and Custom 465 are both stainless steel grades, both high strength ss. Both yield at about 795 MPa — strength does not separate them. 15-5 PH is harder — 33 HRC against 30 HRC for Custom 465 — which matters for wear surfaces and threads.
Which is cheaper, 15-5 PH or Custom 465?
Custom 465 is the lower-cost material: it sits in the premium tier ($$$) while 15-5 PH is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, 15-5 PH or Custom 465?
15-5 PH. Its weldability rates very good (70/100) against good (55/100) for Custom 465.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 15-5 PH 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.