Armor Plate Set: The Arsenal Patriota SAPI Large BZ 260x340 mm (5004Armox) armor plate set from manufacturer Specprom is a reliable solution in the Military Gear > Armor Plates category. This plate combines an optimal weight-to-protection ratio for both men and women: the plate weighs only 3.7 kg, yet it withstands an armor-piercing incendiary bullet of 7.62×39 caliber, Class 5.

Materials and Construction

The plates use armor steel from the leading Swedish concern SSAB — Armox Advance with a hardness of 58-63 HRC and a nominal thickness of only 5 mm. Proper processing and heat treatment of the steel have achieved a level corresponding to DSTU Class 4 and, under real laboratory conditions, withstands at least 1 shot from an AKM 7.62×39, bullet 57-BZ-231 (armor-piercing incendiary).

Anti-fragmentation and Protective Layers

The front part of the plate is covered with Ukrainian-made ballistic felt, laminated with a special PVC layer for moisture protection. The felt is cut to precise dimensions and applied using a several-hour pressing method, ensuring strong adhesion and coating durability even after multiple shots. Additionally, a unique side edging with a density of 800 kgm³ is applied, which is pressed in a special device for an hour and a half to bond the felt to the metal and minimize lateral core exit when hitting the edge of the plate.

Behind the plate, an 8 mm thick EVA damper with a density of 80 kgm³ is installed, which maintains its shape significantly better in use and reduces backface deformation compared to standard dampers made of foamed polyethylene or rubber with a density of 30-35 kgm³.

Shape, Dimensions, and Ergonomics

The plate has an anatomical curve across its width, conforming to the shape of the chest, with cut corners for freedom of movement and comfortable firing. The text specifies the dimensions:

• SAPI Large BZ: 260 × 340 mm (indicated as the optimal size in the lineup).
• The "Shape and Dimensions" section also specifies the size 265 × 340 mm — this is a separate structural value of the plate with an anatomical curve.
• Plate thickness with full coating: 21 mm.

There are a total of 5 SAPI armor plate sizes, and the size chart allows for selecting the optimal plate: for example, size L (Large) — 260 × 340 mm. This size is suitable for men with a chest circumference of 113-122 cm and for women with a nipple-to-nipple distance of 246 to 265 mm.

Certification and Testing

Each armor plate has a unique number and production date. Batches undergo testing in certified laboratories for compliance with DSTU 8782:2018. Based on the test results, a certificate for the batch is issued, valid for 6 months from the date of issue, as well as a test protocol — these documents can be found on the product page.

According to the DSTU standard, a Class 4 plate withstands:

• SVD rifle, 7.62-mm cartridge 57-N-323s (LPS), bullet velocity — 850±15 m/s.
• AK-74 assault rifle, 5.45 mm cartridge, bullet 7N10s (PP), bullet velocity — 910±15 m/s.

Please note: since 1989, the ST-M2 bullet cartridge (core hardness 65 HRC), similar to the B-32 bullet for Class 6 protection, has been produced instead of LPS. Additionally, the plate withstands AKM 7.62×39 bullet 57-BZ-231 (armor-piercing incendiary) and AK-74 7N6M bullets.

Advantages of Armor Steel Plates over Ceramic Plates

Unlike ceramic plates, which are usually single-use and require immediate replacement after impact, armor steel plates can withstand multiple shots and are less demanding for replacement. Furthermore, the backface deformation of a ceramic plate is significantly greater, increasing the risk of injury without using a vest with a ballistic package. Armor steel plates distribute energy over a larger area, reducing the likelihood of rib fractures and internal organ damage.

Product Name: Arsenal Patriota SAPI Large BZ 260x340 mm (5004Armox) Armor Plate Set. Manufacturer: Specprom. Product Type: Military Gear > Armor Plates. Plate Weight: 3.7 kg. Steel Hardness: 58-63 HRC. Steel Thickness: 5 mm. Thickness with Coating: 21 mm. EVA Damper: 8 mm, 80 kgm³. Side Edging: 800 kgm³.

This is a unique solution for those seeking a balance between weight and a high level of protection, certified according to DSTU and laboratory-tested.

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