AMSEC vs Liberty safes: the only brand that names a fire lab

A note on method. This is a comparison of published documents, not a test report. We do not burn or attack safes. Every figure in the tables links to the page it came from, and the scores follow the published gun-safe rubric on how we rate: an independent burglary listing is weighted 30 percent, construction and fire evidence 20 percent each, then lock, fit and support.

One source caveat belongs up front. American Security's own website refuses automated requests, so several AMSEC spec rows below are cited from dated Wayback Machine captures of its product pages and cross-checked against a current retailer listing. Liberty's pages answer normally. That asymmetry is itself part of the comparison: the brand with the better evidence is the harder brand to read.

The main matchup: AMSEC NF6036 vs Liberty Lincoln 25

These two are the like-for-like pair. Both are full-size, roughly 60-inch, 10-to-11-gauge safes with a UL RSC burglary listing, both are available on Amazon, and both are the model each brand's buyers most often land on.

The burglary evidence is a genuine tie: AMSEC states UL RSC Level 1, Liberty's own page calls the Lincoln a "UL-listed 10-gauge steel safe body" rated as a residential security container (Liberty). Construction is close too. The Lincoln's 10-gauge body is thicker than the NF6036's 11 gauge, while the AMSEC answers with a 1/4-inch plate door and fourteen 1-1/2-inch locking bolts (Dean Safe spec sheet).

The tiebreaker is fire, and it is not close. Liberty claims two hours at 1,200°F and names no laboratory. AMSEC publishes 90 minutes at 1,200°F verified by ETL. A shorter number from a named lab beats a longer number from nobody, which is why the NF6036 outscores the Lincoln on this site even though the Liberty has thicker body steel.

The fire evidence gap, in one paragraph

ETL is Intertek's certification mark; an ETL-verified claim means Intertek ran the test and holds the file (Intertek). Under UL 72, the comparable paper standard, Class 350 rated devices are intended to protect paper records: the class number is the maximum interior temperature allowed and the time is how long the device held it in the furnace (UL 72). Either way, a third party owns the result.

Be careful not to over-read it either. A 90-minute ETL rating is a furnace result for a sealed container under a controlled curve. It is not a promise about your house fire, where burn time, where the safe sits and whether firefighters reach it all change the outcome. Our are fireproof safes really fireproof explainer covers what a rating does and does not buy you, and best UL fire rated safes lists the containers whose fire ratings carry a UL classification rather than a maker claim.

The entry pair inverts the evidence

One rung down, the two brands swap weaknesses. AMSEC's SF6030 has the lab-verified fire rating and no burglary listing. Liberty's Colonial 23 has the burglary listing and a maker-only fire claim. You cannot get both at this price from either brand.

AMSEC's own page for the SF6030 names no UL burglary listing, so we rate it as an unlisted safe. A dealer describes the SF series as UL RSC; we could not confirm that with AMSEC or a UL listing, so it stays in the access-box tier. If your first worry is a house fire and the burglary threat is children and casual hands, the SF6030 is the honest answer here. If someone could get an hour alone with your safe, the Colonial's listing is the thing you are actually buying.

The heavy pair: BFX6030 vs Presidential 25

At the top of the residential range, AMSEC's BFX6030 is the strongest evidence package in either line-up and Liberty's Presidential 25 is the most steel Liberty sells.

The BFX6030 is a double-wall build: an 11-gauge outer and 12-gauge inner liner with concrete between them, a 1/2-inch steel plate door, fourteen 1-1/2-inch bolts, a UL RSC Level 1 listing and an ETL fire rating of 120 minutes at 1,200°F (Dean Safe spec sheet). The Presidential answers with a single 7-gauge wall, twelve 1/2-inch locking bars, a composite door, a UL-listed S&G mechanical lock as standard and a factory dehumidifier in the box.

Note what the gauge comparison hides. A 7-gauge single wall is thicker steel than an 11-gauge outer wall, but the AMSEC's wall is a sandwich with a fire core, which is why its verified fire number is longer than the Presidential's unverified one. Our steel gauge explainer covers why a single gauge figure cannot settle a comparison between two different wall designs.

Above both ranges: the AMSEC RF6528

There is one more model worth naming because Liberty has no answer to it. The RF6528 carries a UL TL-30 burglary rating, a commercial standard that means a lab attacked the safe for 30 minutes of net working time with power tools, not the five minutes of hand tools behind an RSC Level 1 listing (UL 687). It has a 6-inch composite door, a 3-inch steel body and weighs 3,455 lb.

The honesty caveat applies to AMSEC too: it calls the RF6528's two-hour, 1,850°F fire rating "independently certified" without naming the lab, so we treat that one as a maker claim even though the same brand names ETL elsewhere. Our TL-15 vs TL-30 vs RSC explainer covers when a commercial rating is worth the freight bill, and for most households it is not.

Burglary listings: a tie on paper, with different wording

A UL RSC listing means the design passed UL's Residential Security Container test. At Level 1 that is a five-minute attack by one technician using common hand tools such as drills, screwdrivers and hammers (UL). It is a floor, not a vault rating, and our UL RSC explainer walks through the levels.

AMSEC states the listing on the product page itself for the NF and BFX series, naming the level: UL RSC Level 1. Its entry SF series does not carry one.

Liberty states the listing for the Lincoln on its own page, and says "UL-listed body" without naming the standard for the Colonial, Franklin and Presidential; the RSC designation for those comes from retailer spec sheets. Its entry Centurion carries no listing for the body at all, only a UL-listed lock.

So the brands are level on whether a listing exists in their mid and upper ranges, and AMSEC is slightly ahead on how specifically it is worded. Neither brand publishes a UL listing file number, which is what you would need to verify either claim independently.

Weight and delivery: Liberty's real advantage

This is where the evidence argument meets a staircase. The AMSEC safes here are the heavy ones: 748 lb for the SF6030, 977 lb for the NF6036, 1,081 lb for the BFX6030, 3,455 lb for the RF6528. The comparable Libertys are 767 lb (Lincoln 25) and 1,021 lb (Presidential 25), and Liberty publishes a minimum doorway width for each series, 26.5 inches for both of those.

Those numbers decide where a safe can go, not just whether you can get it there. Before you choose on fire minutes, read can your floor support a gun safe and how to bolt down a gun safe. A 1,081-lb safe on a second floor or over a crawlspace is a structural question, and an unbolted safe of any weight can be tipped and worked on its back.

Locks and backup entry

AMSEC's standard fit varies by series: the BFX6030 ships with a UL-rated mechanical dial and offers an electronic option, while the NF6036 and SF6030 ship with AMSEC electronic locks. One detail worth knowing on the NF6036: the lock differs by SKU. The Amazon listing we link is the NF6036E5 with the ESL5, while the dealer listing we checked specifies a UL-rated ESL10. Check which lock the listing you buy from names.

Liberty ships a UL-listed S&G Spartan or Dormakaba 702D electronic lock as standard on most series, with a mechanical dial available at order, and a UL-listed S&G mechanical lock as standard on the Presidential.

Practically, both brands will sell you a no-battery mechanical dial if you ask for it, and both charge for it on some models. Our electronic vs mechanical safe locks comparison covers the trade, and best gun safes with mechanical locks lists which safes take one as standard fit.

Warranties

Liberty states a transferable lifetime warranty on the safe body, repairing or replacing the safe after a fire or attempted break-in including free delivery and installation of the replacement, with a separate five-year lock warranty and a registration requirement (Liberty warranty page).

AMSEC publishes a lifetime warranty for damage from burglary attempts and fire, plus five years of parts and labor when the safe has a factory-installed AMSEC lock. On the listings we checked, AMSEC says nothing either way about transferring the warranty to a second owner, so ask the dealer before you assume it does.

One structural difference: AMSEC ties its parts-and-labor coverage to using an AMSEC lock, which quietly prices the third-party lock swap some owners plan on. Liberty excludes lock damage from the lifetime body coverage and handles locks under the five-year term instead.

How you buy each

Liberty sells through dealers and lists several series on Amazon, so you can see a price and a delivery date today. AMSEC is dealer-first: the BFX6030 and RF6528 are not on Amazon at all, and the NF6036 is the exception that is. For the dealer-only models, the buy button here runs a tagged Amazon search rather than pointing at an untracked dealer, and the price you pay will come from a dealer quote.

If you are shopping a bracket rather than a brand, our best gun safes under $2,000 page shows where the cheapest listed safes actually start, and best gun safes ranks the whole registry on the same rubric used here.

What neither brand publishes

• A UL listing file number. Both state RSC listings; neither gives you the file you could look up.
• The RSC level, on Liberty's side. AMSEC names Level 1. Liberty and the retailer sheets say "RSC" without a level.
• A lab for every fire claim. AMSEC names ETL on the SF, NF and BFX series but calls the RF6528's rating "independently certified" with no lab named. Liberty names no lab anywhere.
• AMSEC's own specs, readably. Its site blocks automated requests, which is why we cite dated captures and a named retailer rather than a live maker page.
• Warranty transferability, on AMSEC's side. Liberty states that its warranty transfers; AMSEC does not address it on the listings we checked.
• Build quality. Weld quality, door fit and boltwork engagement are only visible in person. We have not handled these safes.

Who should buy which

• AMSEC NF6036: the best-evidenced safe in either range and the one we would buy. UL RSC Level I, ETL-verified 90 minutes, and it ships from Amazon. Confirm which lock the SKU carries.
• Liberty Lincoln 25: the buyer who wants a maker-stated listing, 10-gauge steel and 200 lb less to move, and who values a warranty that follows the safe to its next owner.
• AMSEC BFX6030: the longest independently verified fire rating we track, at 120 minutes, on a double-wall body with a 1/2-inch plate door. Dealer purchase, 1,081 lb.
• Liberty Presidential 25: the most steel Liberty sells, a mechanical lock standard and a dehumidifier included, in a footprint that still fits a closet.
• AMSEC SF6030: fire first, burglary second. A verified 60-minute ETL rating with no burglary listing, so buy it knowing which half of the job it does.
• Liberty Colonial 23: the cheapest safe in either range with a burglary listing attached, and the easiest to actually get delivered.
• AMSEC RF6528: only when the contents justify a 3,455-lb TL-30 safe and a rigging crew.

If the brand question you are really asking is about the Liberty range itself, our Liberty safes review goes series by series, and Fort Knox vs Liberty covers the other Utah maker people weigh against it.

Read next

Both brands get cross-shopped against others on the same evidence test:

• Hollon vs AMSEC — thick plate steel against third-party certification.
• Steelwater vs Liberty — more steel, or a listing and a dealer.