How to Ask for Backface Deformation Data Before You Issue Armor Plates
Backface deformation data measures how far the rear of an armor plate deforms toward the wearer after a ballistic impact in a controlled test. It is one factor buyers can review when assessing behind-armor impact management.
Backface deformation data shows what happens behind a ballistic plate after impact, not only whether the round was stopped.
A plate can defeat a projectile and still transfer force toward the wearer. For U.S. departments, units, agencies, and prime contractors, that makes behind-armor performance part of the procurement conversation, not a footnote in a product spec.
At a glance
- Request the complete report. A "tested" claim does not show what plate, threat, velocity, or shot pattern produced the result.
- Compare the measured backface deformation (BFD). Backface deformation data helps evaluate how the plate performed behind the strike face under stated conditions.
- Confirm the tested configuration. Verify that the quoted plate, size, and protective setup match the report.
- Ask about required components. Determine whether trauma pads, spall sleeves, or other add-ons are part of the represented system.
- Keep documentation with the file. Ballistic reports, warranty terms, and product specifications support cleaner procurement decisions.
What Is Backface Deformation Data?
Short answer: Backface deformation data measures how far the rear surface of an armor plate deforms toward the wearer after a ballistic impact in a controlled test. It is one factor buyers can review when assessing behind-armor impact management.
Backface deformation is commonly shortened to BFD. Some manufacturers and testing materials also use the term "backface signature," or BFS.
The concept is straightforward. The front of the plate receives the strike. The plate absorbs, redirects, or resists that impact according to its design. The rear surface can move or deform toward the body. BFD testing measures that rearward deformation.
That is why a simple statement that a plate "stopped the round" is incomplete. It answers one important question, but not every question a responsible buyer should ask.
For a unit commander, quartermaster, procurement officer, or prime contractor reviewing a supplier, the next questions should be: What was the measured result? What threat was used? At what velocity? How many rounds were fired? Was the tested plate the same model being quoted?
Those answers belong in the report.
Stopping the Round Is Only Part of the Job
Stopping the specified projectile is armor's first job. Managing the energy associated with the impact is a separate performance question.
Two plates can list similar threat coverage and still produce very different documentation. They may have been tested at different velocities. They may have received different shot patterns. One test may show a single strike, while another may show repeated impacts. One system may rely on additional protective components, while another may be configured as a standalone plate.
That is why the product label cannot be the entire evaluation.
ArmorIQ's design approach is built around standalone protection. Our plates use a patented, proprietary ballistic alloy core with integrated polymer layer system.
On the reports we hold, the HG2 Special measured 7.9 to 11.2 mm of backface deformation and the 3++ measured 0 to 2 mm, against the 44 mm the National Institute of Justice (NIJ) standard allows.
Why "Tested" Is Not Enough
"Tested" is a starting point. It is not a procurement answer.
A complete ballistic test report should identify the plate model, size, test laboratory, report date, ammunition or threat, velocity, shot count, shot locations, relevant test conditions, and measured deformation results.
Without those details, a buyer cannot make a like-for-like comparison. They have a broad performance statement, but not the evidence behind it.
For a department file, a procurement board review, a tactical-equipment trial, or a prime contractor submission, the full report gives decision-makers material they can examine and retain. It also helps prevent a common mistake: assuming a result from one plate configuration applies to every plate in a product line.
Why Backface Deformation Data Matters for Armor Procurement
Short answer: Backface deformation data gives buyers a documented way to compare behind-armor performance under stated test conditions, alongside threat coverage, plate configuration, warranty, and operational requirements.
Armor procurement is not only about selecting an item from a catalog. It affects issue procedures, training, equipment inspections, carrier integration, replacement planning, and the confidence personnel place in their issued equipment.
For institutional teams, unclear product configurations can create real administrative problems. If a protective claim depends on a separate trauma pad, spall sleeve, insert, or assembly procedure, those details need to be identified before the system is ordered and issued.
Ask the supplier a direct question: Does the tested configuration match what our personnel will actually receive and wear?
ArmorIQ plates are designed as standalone armor plates. The plate is built for a carrier that already has the padding in it: one assembly, with no pad to add yourself.
For procurement teams, a standalone approach can reduce the number of components that must be ordered, tracked, inspected, fitted, and replaced. It also makes the evaluation simpler: the buyer can focus on the plate and the report that documents its performance.
Similar Threat Coverage Does Not Mean Similar Results
Threat coverage must match the mission. A tactical team, a government unit, and a prime contractor responding to a solicitation may each have different operational requirements.
But a plate's stated threat coverage does not automatically show:
- The exact projectile type used in testing
- The recorded impact velocity
- The number of shots fired
- The sequence and placement of shots
- Whether shots overlapped
- The BFD measurement for the relevant impacts
- Whether the tested plate is the same size and model being quoted
- Whether additional protective components were used
Those are not minor details. They are what turn a marketing claim into procurement evidence.
ArmorIQ offers two plates, the HG2 Special and the 3++. We list the HG2 Special for .44 Magnum and 7.62x39 full metal jacket (FMJ), and the 3++ for 7.62x51 FMJ, 7.62x54R, 5.56x45 SS109 (mild steel core, MSC) and .30-06 FMJ.
Request the report for the exact plate and threat profile under review. Do not assume a test result for one tier applies to another.
The 7 Questions to Ask for Backface Deformation Data
Short answer: Ask who tested the plate, what threat and velocity were used, how many shots were fired, where they landed, what BFD was recorded, whether the quoted model matches the tested sample, and whether extra components were required.
Use these questions in a request for information (RFI), request for quotation (RFQ), vendor meeting, equipment trial, bid review, or internal evaluation worksheet.
1. Which Independent Lab Conducted the Test?
Ask for the laboratory name, report date, and full report.
A named independent laboratory gives your team a starting point for verification. It helps distinguish a documented test from a broad, unsupported performance statement.
ArmorIQ tests at Energetic Test Labs in Phoenix, Arizona, which is National Voluntary Laboratory Accreditation Program (NVLAP) accredited under Lab Code 600369-0; at the Beretta Test Center in Gardone Val Trompia, Italy; and at MyWall Ltd, Israel, a laboratory certified by the Israeli Ministry of Defense.
2. What Threat, Ammunition, and Velocity Were Used?
Request the exact ammunition or threat description and the recorded impact velocity.
Ammunition labels alone are not enough. The projectile type and velocity are material test conditions that affect the impact a plate experiences.
Your documentation request should reflect the actual requirement. If the purchase is being evaluated for a specific mission profile or solicitation, ask for evidence relevant to that profile.
3. What Was the Recorded BFD Result?
This is the question that gets past vague claims.
Do not treat "low deformation" or "minimal trauma" as the final answer. Request the measured result and review it with the complete test conditions.
ArmorIQ has published the following BFD results from documented testing:
- HG2 Special: 7.9 to 11.2 mm across three shots of 7.62x39 mm MSC at 2,400 ft/s, no penetration, in Energetic Test Labs report ETL-TR-AIQ-25-124-0103 (May 2025), tested under the conditions of NIJ 0101.07, V0.
- 3++: backface deformation of 2, 2, 1, 0, 0, 0 mm across six shots on one plate, three 7.62x51 mm NATO FMJ and three 5.56x45 mm SS109, no penetration, in Beretta Test Center report 488/2026 (May 2026), tested to our protocol.
The NIJ standard allows backface deformation of up to 44 mm and verifies that limit on the first two shots. We measure and record every shot, six per plate on the 3+++.
The number is not a shortcut. It is evidence. Review it with the threat, velocity, plate configuration, and shot pattern that produced it.
4. How Many Shots Were Fired, and Where?
Ask for the shot count, sequence, and pattern.
A single-impact result may not answer the operational requirement for a unit seeking multi-hit capability. You need to know whether the plate was tested with multiple impacts, whether shots overlapped, and where they were placed.
The most shots on any ArmorIQ lab report is six rounds on a single 3++ plate, with no penetration.
Request the underlying documentation. That is the standard we encourage buyers to apply to every manufacturer, including us.
5. Was the Tested Plate the Same Model and Size Being Quoted?
Confirm the exact plate tier, size, thickness, and relevant construction details.
This avoids a common procurement error: reviewing evidence for one configuration while receiving a quote for another. If a plate will be paired with a specific carrier or protective system, document whether that changes the configuration being issued.
At 8.66 x 11.81 in, ArmorIQ lists the HG2 Special at 0.5 in (13 mm) thick and 3.09 lb (1.4 kg), and the 3++ at 0.7 in (18 mm) thick and 5.4 lb (2.45 kg).
The HG2 sample in the Energetic Test Labs report was the US cut, 9.5 x 11.5 in, 0.728 in thick and 4.744 lb. One size is tested and the construction carries across the range, which is standard practice in the industry.
The report, specification, and quote should describe the same product.
6. Does the System Require Trauma Pads or Spall Sleeves?
Ask whether separate components are necessary for the represented protective configuration.
This is a logistics question as much as a product question. If a system requires additional equipment, your team should know whether it is included, how it is installed, how it is inspected, and what happens if it is missing from the issued setup.
ArmorIQ's plate is built for a carrier that already has the padding in it. Plate and carrier are one assembly, with no pad to add yourself.
7. Can You Provide the Full Ballistic Report?
This should be a direct yes-or-no question.
A manufacturer does not need to publish proprietary engineering details to provide meaningful performance documentation. But a serious buyer should have enough information to understand the test conditions and recorded outcomes.
For U.S. agency procurement and prime-contractor submissions, retain the ballistic report with the product specification, configuration notes, and warranty documentation. It creates a cleaner evaluation record before equipment is issued.
What Complete Armor Plate Test Documentation Should Include
Short answer: A complete test report should identify the manufacturer, model, plate size, laboratory, date, threat, velocity, shot sequence, shot placement, relevant test conditions, and measured deformation results.
Build a vendor-comparison file around these items:
- Manufacturer and exact plate model
- Plate size and configuration
- Test laboratory and report date
- Ammunition or threat designation
- Recorded velocity
- Number of shots
- Shot sequence and placement
- Relevant test conditions
- BFD measurement results
- Additional protective components used in the test
- Warranty documentation
- Availability of the complete report
ArmorIQ carries a 12 year warranty on its ballistic plates.
Warranty terms matter for long-term planning. They do not replace ballistic documentation. Review both before making an issue decision.
ArmorIQ's Approach: Show the Report
Short answer: ArmorIQ supports its BFD claims with published results from independent testing, and shares full ballistic reports as part of an evaluation.
We serve U.S. institutional buyers that need documented plate performance, standalone system simplicity, and the ability to discuss bulk or custom requirements.
Our plates are manufactured in the United States or in Italy, depending on the order, and use a proprietary ballistic alloy core with integrated polymer layer system.
Our position is clear: a buyer should not have to choose between a performance claim and the evidence behind it. Ask for the report. Review the stated conditions. Confirm the product configuration. Then compare vendors on the same basis.
That approach supports more informed evaluations for law-enforcement agencies, military and government procurement teams, and prime contractors seeking a plate supplier for an RFQ response.
Frequently Asked Questions
Short answer: The right BFD question is not "What is the lowest number?" It is "Can the manufacturer document the result for the exact plate, threat, and configuration we are evaluating?"
Is backface deformation the same as a plate failing?
Not necessarily. Backface deformation is a recorded measurement from a ballistic test, while overall ballistic performance depends on the applicable test method, threat, setup, and documented outcome.
Can two plates with similar threat coverage have different BFD results?
Yes. Similar stated threat coverage does not establish that two plates were tested under identical conditions or produced the same deformation results.
Should we ask for shot-by-shot results?
Ask for as much detail as the report provides, including shot count, placement, and recorded BFD results. That helps your team understand what was tested instead of relying on a broad claim.
Does ArmorIQ provide test documentation?
Yes. Results are published as a table on the lab results page, and full reports for the HG2 Special and the 3++ are shared as part of an evaluation.
Request ArmorIQ Ballistic Reports for Your Evaluation
Whether you are equipping a tactical team, preparing a government procurement package, evaluating a bulk plate requirement, or responding to an RFQ as a prime contractor, make the report part of your process.
ArmorIQ can provide relevant ballistic documentation for HG2 Special and 3++ evaluations, along with information on bulk supply, standalone plate configurations, carriers, vests, and custom tactical gear.
Ask for the report. Compare the conditions. Make backface deformation part of your next armor evaluation.
