AR400 Steel
AR400 Abrasion Resistant Steel
AR400 Abrasion Resistant Steel is a high-strength, wear-resistant steel plate specifically engineered for applications requiring superior durability and resistance to abrasion. The “AR” stands for Abrasion Resistant, and the number 400 refers to the nominal Brinell hardness value of approximately 400 HB, which provides exceptional resistance against wear, impact, and mechanical stress.
Manufactured using advanced steelmaking processes and typically supplied in a quenched and tempered condition, AR400 steel plates offer an excellent balance between hardness, toughness, weldability, and formability. These properties make AR400 steel ideal for heavy-duty industries such as mining, construction, material handling, and aggregate processing where equipment faces continuous abrasive wear.
At Emirerri Steel, we supply premium-quality AR400 abrasion resistant plates in various sizes, thicknesses, and specifications to meet the demanding requirements of industrial applications.
Types of AR400 Steel Products
AR400 Steel Plate
AR400 Wear Plate
Key Features
- Excellent abrasion and wear resistance
- Typical hardness range 360 – 444 BHN
- High strength and impact toughness
- Good weldability and machinability
- Longer service life compared to conventional steel
- Suitable for heavy-duty industrial environments
- Good balance between hardness and ductility
- Superior resistance to sliding abrasion
AR400 Plate Specifications
| Specification | Details |
|---|---|
| Product Form | Plates / Sheets |
| Material Grade | AR400 |
| Hardness | 360 – 444 BHN |
| Manufacturing Process | Hot Rolled |
| Heat Treatment | Quenched and Tempered |
| Thickness | 6 mm – 100 mm |
| Width | 1500 mm – 2500 mm |
| Length | 6000 mm – 12000 mm |
| Surface Finish | Mill Finish / Shot Blasted |
| Edge Condition | Mill Edge / Cut Edge |
AR400 Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM | AR400 |
| DIN | XAR 400 |
| EN | 1.8721 |
| JIS | JFE EH400 |
| SSAB | Hardox 400 |
AR400 Plate Size Range
| Thickness | Width | Length |
|---|---|---|
| 6 mm – 100 mm | 1500 – 2500 mm | 6000 – 12000 mm |
AR400 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.20 – 0.34 |
| Manganese (Mn) | 1.00 – 1.50 |
| Silicon (Si) | 0.20 – 0.50 |
| Chromium (Cr) | 0.20 – 0.60 |
| Molybdenum (Mo) | 0.05 – 0.20 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.005 |
AR400 Mechanical Properties
| Property | Value |
|---|---|
| Hardness | 360 – 444 BHN |
| Yield Strength | 1000 MPa (approx) |
| Tensile Strength | 1250 – 1500 MPa |
| Elongation | 10 – 15% |
| Impact Toughness | High |
AR400 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1425 – 1540 °C |
| Thermal Conductivity | 45 W/m·K |
| Modulus of Elasticity | 200 GPa |
Corrosion Resistance
AR400 steel provides moderate corrosion resistance due to alloying elements such as chromium and silicon. However, it is primarily designed for abrasion resistance rather than corrosion protection, and additional coatings or protective treatments may be used in corrosive environments.
Heat Resistance
AR400 steel maintains good structural integrity at moderately elevated temperatures. The material can typically withstand temperatures up to approximately 400–500°C, depending on the specific alloy composition and application environment.
AR400 Heat Treatment
AR400 plates are generally supplied in quenched and tempered condition, which provides high hardness and toughness.
Typical heat treatment process:
Austenitizing – Heating the steel to high temperature
Quenching – Rapid cooling to increase hardness
Tempering – Reheating to improve toughness and reduce brittleness
This process refines the microstructure and significantly enhances wear resistance.
Welding
AR400 steel can be welded using conventional welding processes with proper precautions.
Recommended welding practices:
- Use low-hydrogen electrodes
- Preheating may be required depending on thickness
- Control heat input to avoid hardness loss
- Use suitable filler metals such as E7018
Proper welding procedures help maintain the mechanical properties and structural integrity of AR400 steel.
Fabrication
Despite its high hardness, AR400 steel can be fabricated using modern machining and processing techniques.
Common fabrication processes include:
- Plasma cutting
- Laser cutting
- Oxy-fuel cutting
- Bending and forming
- Drilling and machining
Careful process control is required to prevent cracking and maintain hardness.
Applications
- Mining equipment
- Dump truck bodies
- Conveyor systems
- Crusher liners
- Hoppers and chutes
- Bulldozer blades
- Bucket liners
- Material handling equipment
- Cement plant equipment
- Quarry machinery
