Solution treat & age
Precipitation hardening for aluminum (T6, T651, T73), titanium, Inconel 718 and beryllium copper — strength from a fine dispersion of second-phase particles, not from martensite.
6 treatments compared
Cycle temperature, the hardness each delivers, furnace time and relative cost, side by side. Open a treatment for its full cycle, specifications, compatible alloys and drawing call-out.
| Treatment | Temperature | Hardness | Cycle time | Relative cost |
|---|---|---|---|---|
Age T6 (Aluminum) is a precipitation-hardening condition for 6061 and 6063 and 2024 and 7075. | 115–190 °C | 25–35 HRC | 8–30 h | $$ Standard |
Age T651 (Aluminum) is a precipitation-hardening condition for 6061 plate and 2024 plate and 7075 plate. | 115–190 °C | 25–35 HRC | 8–30 h | $$ Standard |
Age T73 (Aluminum) is a precipitation-hardening condition for 7075 and 7050 (alloy-specific overage condition). | 105–180 °C | 25–32 HRC | 18–40 h | $$$ Premium |
Solution Treat + Age (Ti) is a precipitation-hardening condition for Ti-6Al-4V and Ti-6Al-6V-2Sn and Ti-10V-2Fe-3Al. | 900–970 °C | 36–44 HRC | 8–16 h | $$$$ High |
Age (Inconel 718) is a precipitation-hardening condition for Inconel 718 (UNS N07718) and Alloy 718 AM. | 705–730 °C | 36–44 HRC | 18–24 h | $$$$ High |
Age C17200 (Beryllium Cu) is a precipitation-hardening condition for C17200 and C17300. | 300–330 °C | 36–42 HRC | 3–6 h | $$$ Premium |
Ranges depend on the alloy and the specification called out. A dash means the treatment sets no target for that value.
Where solution treat & age sits
Cycle temperature against hardness delivered across the heat-treatment library. Other families appear as faint dots. Click a dot to open its page.
Choosing between them? How to choose a heat treatment — best picks by what the part needs, the five things a drawing call-out must carry, and the questions engineers ask.