Wear Resistant Steel Plates

Product Application: Crusher liners, feeder bottom plates, chutes, mine car bodies, excavator bucket teeth, loader buckets, bulldozer track shoes, belt conveyor idlers, silo liners, screw conveyor blades, cement mill liners, coal powder conveying pipelines, coke hoppers, blast furnace bells, sintering machine trolley panels, steelmaking converter slag baffles, etc.

Delivery conditions:The goods can be delivered under various conditions, such as hot rolling, normalization, tempering, quenching, N+T, T+Q, etc.

Specifications & Standards:Refer to the table below

Consultation Hotline: 0086-371-55023661

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Executive StandardsDomestic Standards: GB/T 24186-2021 (Wear-Resistant Steel Plates), GB/T 3274-2017 (Hot-Rolled Thick Plates of Carbon Structural Steel and Low-Alloy Structural Steel)
International Standards: EN 10025-6 (High-Strength Structural Steel), ASTM A514 (Quenched & Tempered High-Strength Steel)
Common Grades: Domestic NM360/NM400/NM450/NM500/NM550; International HARDOX 400/HARDOX 450/HARDOX 500; Clad Wear-Resistant Steel Q355+NM400
Specification RangeThickness: 3 – 300 mm (3-100mm for single alloy wear-resistant steel; 8-30mm base layer + 3-20mm wear-resistant layer for clad wear-resistant steel)
Width: 1000 – 4800 mm (conventional 1500/2000/2200mm, customizable)
Length: 3000 – 18000 mm (fixed-length tolerance ±5mm)
Delivery Form: Quenched & Tempered (Q+T) plate, Thermo-Mechanically Controlled Processing (TMCP) plate, Clad Welded Plate (base layer + wear-resistant layer)
Chemical Composition (Typical Grades, %)NM400 (Alloy Wear-Resistant): C 0.12-0.20, Si 0.20-0.60, Mn 1.00-1.60, Cr 1.00-1.50, Mo 0.20-0.50, Ni 0.30-0.80, B ≤ 0.005
HARDOX 450 (International Grade): C ≤ 0.22, Si ≤ 0.70, Mn ≤ 1.70, Cr 1.50-2.00, Mo 0.30-0.60, Ni ≤ 1.00
Clad Wear-Resistant Steel (Q355+NM400): Base layer complies with Q355 composition;
wear-resistant layer same as NM400Core Requirements: Low sulfur and phosphorus (S ≤ 0.015%, P ≤ 0.025%); alloying element strengthening matrix + carbide hard phase
Mechanical Properties (Room Temperature)Hardness (HBW): NM360 320-380, NM400 360-420, NM450 400-460, HARDOX 500 470-530
Yield Strength (σs): NM360 ≥ 1000MPa, NM400 ≥ 1100MPa, NM500 ≥ 1300MPa
– Tensile Strength (σb): NM360 1200-1400MPa, NM450 1350-1550MPa, HARDOX 450 1400-1600MPa
Elongation (A5): ≥ 10% (ensures toughness, avoids impact brittleness)- Impact Energy (Akv): ≥ 27J (-20℃, Charpy V-notch)
Heat Treatment StateAlloy Wear-Resistant Steel: Quenched & Tempered (900-950℃ quenching + 550-650℃ tempering), forming martensite + bainite structure with precipitated carbide hard phase
Clad Wear-Resistant Steel: Base layer normalized + wear-resistant layer submerged arc welding (automatic submerged arc welding, post-weld tempering for stress relief)
Core Requirements: Hardness uniformity (hardness difference ≤30HBW within the same plate), no network carbides, crack prevention
Processing AdaptabilityWelding: Preheating to 150-250℃ (thickness ＞ 12mm); use low-hydrogen electrodes (e.g., E9018-G); slow cooling or 200-300℃ heat preservation for stress relief after welding
Cutting: Flame cutting (thick plates), plasma cutting (medium-thick plates), laser cutting (thin plates); cutting speed 30% lower than ordinary steel to prevent cracking
Forming: Cold bending radius ≥ 3× plate thickness (NM360/NM400), ≥ 5× plate thickness (NM450+); avoid hard bending
Surface Treatment: Factory-supplied with anti-rust paint; custom wear-resistant coatings (e.g., polyurethane) available for enhanced protection
Wear Resistance PerformanceWear Test: NM400 wear resistance is 3-5 times that of Q235 steel, NM500 5-8 times, HARDOX 500 8-10 times
Wear Mechanism: Carbide (Cr7C3, Fe3C) hard phases dispersedly distributed (hardness ≥ HV1000), resisting material impact wear
Applicable Wear Types: Abrasive wear, impact wear, adhesive wear (e.g., ore, coal, cement and other media)
Application FieldsMining Machinery: Crusher liners, feeder bottom plates, chutes, mine car bodies
Construction Machinery: Excavator bucket teeth, loader buckets, bulldozer track shoes
Conveying Equipment: Belt conveyor idlers, silo liners, screw conveyor blades
Building Materials/Chemical Industry: Cement mill liners, coal powder conveying pipelines, coke hoppers
Metallurgical Equipment: Blast furnace bells, sintering machine trolley panels, steelmaking converter slag baffles
Inspection RequirementsRoutine Testing: Chemical composition analysis, hardness test (Brinell hardness tester, ≥3 test points per square meter), tensile/impact test
Wear Resistance Testing: Martindale wear test, ball drop impact wear test (provided on demand)
Non-Destructive Testing (NDT): Ultrasonic flaw detection (GB/T 6402/ASTM A578, 100% flaw detection for thick plates); bonding strength test of wear-resistant layer for clad wear-resistant steel
Certificate Requirements: EN 10204 3.1 material certificate, wear resistance test report
Core CharacteristicsHigh Wear Resistance: Hardness ≥ 320HBW, strengthened by carbide hard phases; service life 3-10 times that of ordinary steel- Balance of Strength and Toughness: Quenching & tempering ensures both hardness and toughness, capable of withstanding medium impact loads (avoids brittleness)
Processing Compatibility: Low carbon equivalent design, supporting welding, cutting, forming and other conventional processing
Diverse Options: Single alloy steel for medium-low wear; clad wear-resistant steel (tough base layer + high-hardness wear-resistant layer) for high-impact and high-wear conditions

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