Stainless Steel Custom 465 · precip hard
Stainless Steel Custom 465-H900
Properties of the H900 condition, compared with the other Custom 465 tempers.
Peak-strength condition for maximum tensile/hardness where toughness and SCC margin are secondary.
What is Custom 465-H900?
Custom 465-H900 is Custom 465 in the H900 condition — peak-strength condition for maximum tensile/hardness where toughness and SCC margin are secondary. Custom 465-H900 has a yield strength of 1,690 MPa (245 ksi) and a tensile strength of 1,790 MPa (260 ksi) — stronger than 100% of stainless steel grades. Elongation at break is 11% and the elastic modulus is 200 GPa (29 Msi). Custom 465-H900 has a density of 7.78 g/cm³ (0.281 lb/in³), lighter than 57% of stainless steel grades. It melts at 1,400°C (2,552 °F). Condition A is the default condition FabDigit quotes; H900 is available on request or by drawing note.
Advantages
- High strength — 1,690 MPa (245 ksi), better than 100% of stainless steel grades
- Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
Limitations
- Difficult to machine — 20/100, worse than 98% of stainless steel grades
- Limited formability — 8/100, worse than 97% of stainless steel grades
- Limited ductility — 11%, worse than 96% of stainless steel grades
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 91% of stainless steel grades
- High embodied carbon — 5.6 kg CO₂/kg, worse than 82% of stainless steel grades
Custom 465-H900 properties
Typical room-temperature values for Custom 465-H900 — 16 properties are specific to this condition; the rest are grade-level values shared by every Custom 465 temper. Each bar shows where the value sits among the stainless steel grades in FabDigit's library — further right is higher.
Physical3
Custom 465-H900 has a density of 7.78 g/cm³ (0.281 lb/in³), lighter than 57% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical15
Custom 465-H900 has a yield strength of 1,690 MPa (245 ksi) and a tensile strength of 1,790 MPa (260 ksi) — stronger than 100% of stainless steel grades. Elongation at break is 11% and the elastic modulus is 200 GPa (29 Msi).
Thermal5
Custom 465-H900 is rated for continuous service to 400°C (752 °F). It conducts heat at 16.5 W/m·K (9.53 BTU/hr·ft·°F), better than 70% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical2
Custom 465-H900 has an electrical resistivity of 7.8×10⁻⁷ Ω·m.
Chemical & Environmental3
Corrosion resistance is fair (52/100), worse than 77% of stainless steel grades.
Sustainability4
Producing a kilogram of Custom 465-H900 takes about 85 MJ of energy and emits 5.6 kg of CO₂ — more than 91% of stainless steel grades. Typical recycled content is 35%.
Manufacturability6
Custom 465-H900's machinability is poor (20/100, worse than 98% of stainless steel grades); weldability good (55/100); formability not recommended (8/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other Custom 465 tempers and conditions
Custom 465 is also supplied in 7 other conditions. The full side-by-side table is on the Custom 465 overview.
- Condition ADefaultStock and machining condition — lowest strength, best formability; age after rough machining.795 MPa yield · 30 HRC
- H900Peak-strength condition for maximum tensile/hardness where toughness and SCC margin are secondary.1,690 MPa yield · 51 HRC
- H950High strength with better toughness than H900 — common for aerospace fasteners and shafts.1,620 MPa yield · 49 HRC
- H1000Best strength/toughness balance and the usual choice for fracture-critical and corrosion-exposed parts.1,550 MPa yield · 47 HRC
- H1050Over-aged for maximum ductility, toughness and SCC resistance at reduced strength.1,450 MPa yield · 45 HRC
Working with Custom 465-H900
Is Custom 465 easy to machine?
Rough machine in Condition A with sharp, rigid, positive-rake carbide tooling and heavy flood coolant; finish after aging with low feeds since aged 47–51 HRC material work-hardens and is abrasive due to Ti.
Can Custom 465 be welded?
Good GTAW/EBW/laser weldability with matching or 465 filler, no preheat needed; re-solution-anneal plus age (or at minimum re-age) after welding to restore joint strength.
Can Custom 465 be formed, bent or molded?
Cold form, bend and cold draw only in Condition A; aged material is essentially non-formable, and hot work should be done above ~1000 °C with slow cooling.
What surface finishes work on Custom 465?
Passivate per ASTM A967/AMS 2700 after machining; takes a high mirror polish for surgical use; avoid electroplating in peak-aged tempers or bake for hydrogen embrittlement relief.
Custom 465 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | ≤ 0.02 | 0.01 |
| Mn | ≤ 0.25 | 0.1 |
| Si | ≤ 0.25 | 0.1 |
| P | ≤ 0.02 | — |
| S | ≤ 0.01 | — |
| Cr | 11 – 12.5 | 11.75 |
| Ni | 10.75 – 11.25 | 11 |
| Mo | 0.75 – 1.25 | 1 |
| Tiprimary η-phase strengthener | 1.5 – 1.8 | 1.65 |
| Fe | balance | — |
Custom 465-H900 — frequently asked
What is Custom 465-H900 used for?
Custom 465-H900 is typically used for aircraft structural fittings, landing gear components, actuator shafts and rods, high-strength aerospace fasteners, helicopter rotor hardware and drive shafts. In short: premium high-strength PH stainless.
What is the yield strength of Custom 465-H900?
Custom 465-H900 has a typical yield strength of 1,690 MPa (245 ksi) and a tensile strength of 1,790 MPa (260 ksi) — stronger than 100% of stainless steel grades. Strength varies by condition: see the 8 listed tempers.
Is Custom 465-H900 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 98% of stainless steel grades). Rough machine in Condition A with sharp, rigid, positive-rake carbide tooling and heavy flood coolant; finish after aging with low feeds since aged 47–51 HRC material work-hardens and is abrasive due to Ti.
Can Custom 465-H900 be welded?
Yes — weldability is rated good (55/100). Good GTAW/EBW/laser weldability with matching or 465 filler, no preheat needed; re-solution-anneal plus age (or at minimum re-age) after welding to restore joint strength.
What surface finishes work on Custom 465-H900?
Passivate per ASTM A967/AMS 2700 after machining; takes a high mirror polish for surgical use; avoid electroplating in peak-aged tempers or bake for hydrogen embrittlement relief.
Can Custom 465-H900 be formed, bent or molded?
Cold form, bend and cold draw only in Condition A; aged material is essentially non-formable, and hot work should be done above ~1000 °C with slow cooling.
What is the maximum service temperature of Custom 465-H900?
Custom 465-H900 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Custom 465 Condition A and Custom 465-H900?
Condition A is the default condition — stock and machining condition — lowest strength, best formability; age after rough machining. H900: peak-strength condition for maximum tensile/hardness where toughness and SCC margin are secondary. Yield strength is 795 MPa in Condition A versus 1,690 MPa in H900.
Can FabDigit make parts in Custom 465-H900?
Yes — Custom 465-H900 is available for CNC machining and sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Custom 465 Stainless Alloy Technical Datasheet — Carpenter Technology (2023)
- AMS 5936 — Steel, Corrosion Resistant, Bars/Wire/Forgings (UNS S46500) — SAE International (2021)
- ASTM A564/A564M — Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes — ASTM (2019)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.