AR 550 steel plates are highly sought after across multiple industries due to their exceptional hardness and superior resistance to wear.
This grade delivers an excellent balance of abrasion resistance, crack resistance, and reliable performance under demanding working conditions.
With a nominal hardness of approximately 550 BHN, AR 550 plates significantly extend the service life of equipment and components exposed to harsh environments and severe abrasion. Their outstanding wear-resistant properties help reduce downtime and maintenance costs.
All AR 550 abrasion resistant plates are manufactured in compliance with recognized international and national quality standards, ensuring consistent performance and durability.
Csecplates is capable of meeting customized customer requirements and is committed to building long-term, stable cooperation with global clients.
AR 550 Steel Plate Specifications
Thickness: 8 – 65 mm
Width: Up to 2900 mm
Length: Up to 14630 mm
Production Process: Hot Rolled (HR) / Cold Rolled (CR)
Heat Treatment: Normalized (N), Quenched & Tempered (Q+T)
Surface Coating Options: EP, PE, HDP, SMP, PVDF
Material Designations:
AR 550
HB 550 Steel Plate
550 Wear Resistant Steel Plate
AR 550 Abrasion Resistant Plate
Maximum Chemical Composition of AR 550 Steel
| Plate Thickness (mm) | C | Si | Mn | Cr | Ni | Mo | B |
|---|---|---|---|---|---|---|---|
| 10 – 50 | 0.37 | 0.50 | 1.30 | 1.14 | 1.40 | 0.60 | 0.004 |
Carbon Equivalent (CET / CEV)
Applicable Thickness: 8.0 – 65.0 mm
Maximum CET (CEV): 0.51 (0.76)
Typical CET (CEV): 0.48 (0.72)
Mechanical Properties of AR 550 High Strength Plate
Hardness (Guaranteed): 550 ± 25 HBW
Impact Toughness (Typical, 20 mm):
30 J at –40°C
22 ft-lb at –40°F
Yield Strength: approx. 1400 N/mm² (205 ksi)
Tensile Strength: approx. 1700 N/mm² (205 ksi)
Elongation: 7%
Typical Carbon Equivalent: CEV 0.72 / CET 0.48
AR 550 Plate Manufacturers & Hardness Range
| Grade | Manufacturer | Country | Hardness Range (BHN) |
|---|---|---|---|
| AR 550 | SSAB | Sweden | 525 – 575 |
AR 550 Plate Processing Capabilities
(According to EN 10051 & EN 10029)
Most conventional fabrication processes can be applied to AR 550 plates, including:
Cutting
Forming
Drilling & Machining
Grinding
Testing
Commonly Available AR 550 Plate Sizes (Inch)
1/8", 3/16", 1/4", 3/8", 1/2", 5/8", 3/4", 1", 1-1/4",
1-1/2", 2", 2-1/2", 3", 4"
Notes:
1/8" thickness available only in 60" × 120"
3/16" thickness available only in 48" × 144" and 96" × 144"
AR 550 BHN Plate Size Chart (mm)
| Thickness | Width | Length |
|---|---|---|
| 4 | 2000 | 6000 |
| 5 | 2000 | 6000 |
| 6 | 2000 / 2500 | 6000 |
| 8 | 2000 / 2500 | 6000 |
| 10 | 2000 | 6000 |
| 12 | 2000 | 6000 |
| 15 | 2000 | 6000 |
| 16 | 2000 | 6000 |
| 20 | 2000 | 6000 |
| 25 | 2000 | 6000 |
| 32 | 2000 | 6000 |
| 40 | 2000 | 6000 |
| 50 | 2000 | 6000 |
| 60 | 1800 | 3400 |
What is AR550 rated for?
AR550 steel stands as a pinnacle of durability and resilience in the world of shooting range targets. It's a high-strength, abrasion-resistant steel alloy with a Brinell hardness rating of 550, indicating exceptional resistance to wear and deformation
What's the difference between AR500 and AR550 steel?
Higher hardness: AR550 steel measures closer to 550 BHN, offering better resistance to deformation and pitting. Improved performance with high-velocity rounds: AR550 withstands repeated impacts from 5.56 and . 308 much better than AR500.
What is the hardness of AR550 steel?
With a hardness range of 530-570 BHN, AR550 excels in resisting sliding abrasion.
What can AR550 stop?
Infidel says this plate is made from the 1/4″ abrasion-resistant Brinell Hardness 550 steel (AR550) designed to armor military vehicles. A 1/4″ polymer coating surrounds the metal to capture bullet fragments. The claim is that AR550 will stop "5.56, . 223, 7.62, 30-06