Do Carabiners Expire? Carabiner Retirement Checker
Check when to retire your climbing carabiner based on age, usage frequency, and condition. Based on UIAA Standard 121 and manufacturer guidelines from Petzl, Black Diamond, DMM, and Camp.
Quick Answer
Do carabiners expire? Yes. Most manufacturers recommend retiring climbing carabiners after 10 years from date of manufacture, regardless of use, or sooner if they show signs of wear, damage, or have been involved in a significant fall. An unused carabiner stored properly can last the full 10 years. A heavily used carabiner may need replacement after 3–5 years. The checker below evaluates your carabiner's age, usage frequency, and condition to give a specific retirement recommendation.
⚠For reference only. UIAA 121 maximum guidelines. Metal components can fail without visible warning after shock loading. When in doubt, retire it.
UIAA maximum carabiner age
| Usage | Max age |
|---|
| Never used | 10 years |
| Rarely (few times/yr) | 10 years |
| Monthly | 7 years |
| Weekly | 5 years |
| Daily | 2 years |
Source: UIAA Standard 121 — Connector Inspection & Retirement
Do Carabiners Expire? — The Full Answer
Climbing carabiners don't have a strict expiration date like food, but they DO have a recommended service life. Most manufacturers (Petzl, Black Diamond, DMM, Camp) recommend a maximum lifespan of 10 years from manufacture date, even if the carabiner has never been used. This is because aluminium alloys can develop micro-fatigue over time, UV exposure degrades anodisation, and gate springs lose tension. In practice, most active climbers retire carabiners after 3–7 years due to wear. The date of manufacture is usually stamped on the spine of the carabiner. Also check your climbing rope retirement — ropes have shorter lifespans than carabiners.
Signs Your Carabiner Needs Replacing
Replace your carabiner immediately if: the gate doesn't snap shut cleanly under its own spring (hold it open, let go — it should close with a crisp click), there's visible wear groove where the rope contacts the nose or basket, the gate has lateral play (wiggle side to side when closed), there are deep scratches or gouges in the spine, the keylock mechanism catches or doesn't seat properly, or the carabiner was loaded in a fall factor >1 scenario. Don't forget your harness retirement — harnesses typically last 3–7 years. Understanding fall factor helps assess whether a fall warrants gear retirement.
Frequently asked questions
How long do climbing carabiners last?
With regular use (50–100 days/year), climbing carabiners typically last 3–5 years. With light use, up to 10 years. The absolute maximum is 10 years from manufacture date regardless of use. Heavy gym use (daily clipping) can wear out a carabiner in 1–2 years.
Can I still use a carabiner after a big fall?
If the carabiner was directly loaded during a fall factor >1 (e.g., as part of the anchor or top piece), retire it. Aluminium carabiners can develop internal micro-cracks from high-force loading that aren’t visible externally. For low fall-factor falls on well-placed protection, inspect carefully but the carabiner is likely fine.
Where is the manufacture date on a carabiner?
Most manufacturers stamp the date on the carabiner’s spine — look for a 2-digit year (e.g., "22" for 2022) or a full date code. Petzl uses a pictogram system with a circle clock. Black Diamond stamps the year directly. If you can’t find a date and don’t remember when you bought it, err on the side of retirement.
When should I retire a carabiner?
Retire a carabiner immediately if: the gate does not snap shut and lock reliably; there are grooves deeper than approximately 1mm from rope or webbing wear; there is visible corrosion, cracking, or deformation; or after any severe shock load (fall factor above 1). Also retire based on UIAA age guidelines: 2 years daily use, 5 years weekly, 7 years monthly, 10 years maximum.
Can a carabiner fail without visible damage?
Yes. Aluminium alloy carabiners can develop internal micro-cracks after severe shock loading that are invisible to surface inspection but significantly reduce load capacity. This is why retirement after any severe shock load (factor fall above 1) is recommended regardless of appearance.
What is a shock load on a carabiner?
A shock load occurs when a rope or sling suddenly becomes taut under a falling load. The peak force in the carabiner can be 3–4× the static weight of the load, lasting only milliseconds. A severe shock load occurs when the fall factor exceeds 1.0, meaning the carabiner experiences forces approaching or exceeding its design limits.
Are scratched carabiners safe to use?
Surface scratches from rock contact do not affect a carabiner's strength. They are cosmetic. What matters is the gate function, any grooves from rope wear on the spine, and any deformation. A heavily scratched carabiner with a smooth spine and perfectly functioning gate is safe to use within its age limits.
How often should I inspect carabiners?
Inspect carabiners before every climbing session. Test the gate: open and close it firmly to confirm it snaps shut instantly and locks completely. Run your thumb along the inside of the spine to feel for rope wear grooves. Look for corrosion (white powder on aluminium is superficial; pitting or black corrosion is cause for retirement).
Can I clean a carabiner?
Yes. Rinse with fresh water to remove salt, sand, and grit. Use mild soap if needed. Open the gate fully while rinsing to flush the hinge mechanism. Dry thoroughly before storage; moisture in the gate spring mechanism accelerates corrosion. A drop of silicone lubricant on the gate hinge can help, but avoid getting lubricant on the gate nose or spine where rope contact occurs.