Custom 465 is a martensitic age hardenable stainless designed for very high strength with good toughness and corrosion resistance. Double vacuum melting and a titanium strengthened precipitation system push it well above the strength of 17-4 and 15-5 while keeping usable fracture toughness.
It is used where designers want the strength of an ultra high strength alloy steel but need stainless corrosion behaviour, for example in fasteners, actuators, surgical instruments and airframe hardware.
Stocked as bar and wire, supplied solution treated for machining and aged to the ordered H condition.
Sizes and stock
- Round bar: through 8" DIA
- Flat bar and forgings: by request
Processing capabilities
- Condition and precipitation hardening (H900 through H1150) to your call-out
- Shearing, waterjet, laser and saw cut blanks
- Centerless grinding, turning and polishing
- Penetrant dye and ultrasonic inspection, chemical assay and physical testing
Specifications
Material is released to the applicable specification with mill test reports and, on request, independent lab verification.
Why engineers specify Custom 465
- Very high strength for a stainless grade
- Good fracture toughness and corrosion resistance
- Double vacuum melted
- Simple age hardening with low distortion
Nominal chemistry
Percent by weight, nominal composition per the governing specification. The mill test report for your heat is the controlling document.
Typical mechanical properties
| Condition | Tensile strength | Yield strength | Elongation | Hardness |
|---|---|---|---|---|
| H900 | 260 ksi min | 240 ksi min | 8% min | ~51 HRC |
| H1000 | 230 ksi min | 220 ksi min | 10% min | ~48 HRC |
Typical published values for reference only, not for design. Properties vary with section size, product form and processing. Order to the specification and condition your drawing requires.
Typical applications
- High strength fasteners
- Airframe and actuator hardware
- Surgical and dental instruments
- Motorsport components
Fabrication notes
Machining
Austenitic grades work harden quickly, so use positive rake tooling, rigid setups, generous feed and flood coolant rather than light dwelling cuts. Martensitic and precipitation hardening grades machine most easily in the annealed or solution treated condition and are aged after rough machining.
Welding
Weldable by GTAW, GMAW, resistance and electron beam methods with matching or over alloyed filler. Stabilized and low carbon grades resist sensitization in the weld zone. Precipitation hardening grades are normally welded in the solution treated condition and aged afterward.
Forming
Sheet and strip form well in the annealed condition; cold worked tempers trade formability for strength. Allow for springback and, where specified, an intermediate anneal between draws.
Custom 465 compared with similar grades
13-8 PH
Lower strength, very high toughness, more widely stocked.
Custom 455
Similar family at a somewhat lower strength level with excellent machinability.
Designations and cross reference
- Material family
- Stainless Steel
- UNS number
- S46500
Working from an obsolete, foreign or superseded designation? Send it over and we will cross reference it to a current grade and specification.
Quality, testing and traceability
Supplied with mill test reports and heat traceability, with penetrant dye, ultrasonic, chemical assay, hardness, corrosion and mechanical testing available on request.
We are AS9100D and ISO 9001:2015 registered. If our stock does not already carry the inspection your specification requires, we can quote the material with that work performed. More on our quality system
Available forms
Custom sizes converted from billet, plus saw cut, waterjet and near-net blanks. See custom conversions
Custom 465 frequently asked questions
What is Custom 465?
Custom 465 is a martensitic age hardenable stainless designed for very high strength with good toughness and corrosion resistance. Double vacuum melting and a titanium strengthened precipitation system push it well above the strength of 17-4 and 15-5 while keeping usable fracture toughness.
What forms is Custom 465 available in?
We supply Custom 465 in bar, forging. Custom sizes are converted from billet, and we can provide saw cut, waterjet or near net blanks so material arrives closer to your finished part.
What is the UNS or equivalent designation for Custom 465?
Custom 465 is designated UNS S46500. If your drawing calls out an obsolete or foreign designation we can cross reference it and confirm the equivalent before you order.
What specifications can Custom 465 be supplied to?
Commonly ordered specifications include AMS 5936, ASTM A564/A564M-19A, BMS 7-364 CL A REV A, BSS 7025 (7/12/94), BSS 705 REV B, SAFRAN MTL-1304. Material is released to the specification and condition on your purchase order, with mill test reports supplied as standard.
What conditions can Custom 465 be ordered in?
We can supply H900, H1000. If our stock is not already in the condition you need, we can quote it with the heat treatment performed before shipment.
Can you cut Custom 465 to size?
Yes. Saw cutting, waterjet, laser and shearing are available, along with trepanning, gun drilling, lathe turning and CNC machining, so you can order blanks or rough machined pieces rather than full lengths.
Do you provide test reports and additional testing on Custom 465?
Every order ships with mill test reports and heat traceability. If your print calls for ultrasonic inspection, penetrant dye, magnetic particle, chemical assay, micrography, hardness or mechanical testing and our stock does not already carry it, we can quote the material with that work performed.
Can Custom 465 be supplied to DFARS domestic melt requirements?
Tell us at quote stage if the order is DFARS or domestic melt restricted and we will confirm availability against that requirement before you commit.
What do you need to quote Custom 465?
Grade, form, dimensions, quantity, specification and condition, plus any testing or certification requirements and the date you need it. Send a drawing if you have one. Quotes are typically ready within 24 hours.
How does Custom 465 compare with 13-8 PH?
Lower strength, very high toughness, more widely stocked.