Name: Wear Steel Plate
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Wear Steel Plate

Wear-resistant steel plate is a high-hardness steel with excellent wear resistance achieved through heat treatment processes. Characterized by exceptional wear resistance, good impact toughness, and workability, it is widely used in mining machinery, engineering equipment, and material handling applications under severe abrasive conditions.

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◉ PRODUCT SPECIFICATION

1. Material Standards & Grades

Primary Standards:

GB/T 24186 - High Yield Strength Wear-Resistant Steel Plates
JIS G3444 - Alloy Steel Plates for Mining
EN 10025-6 - High Yield Strength Steel for Quenching and Tempering

Common Wear-Resistant Grades:

Grade	Surface Hardness (HB)	Minimum Yield Strength (MPa)	Equivalent Standards
NM360	340-400	1000	JIS G3444 SLY356
NM400	370-430	1200	WELDOX 400
NM450	420-480	1300	HARDOX 450
NM500	470-530	1400	HARDOX 500
NM550	520-580	1500	HARDOX 550
NM600	570-630	1600	HARDOX 600

2. Chemical Composition (% by weight)

Element	NM400	NM450	NM500	NM550
Carbon (C)	0.20-0.28	0.25-0.32	0.30-0.37	0.32-0.40
Silicon (Si)	0.15-0.50	0.15-0.50	0.15-0.50	0.15-0.50
Manganese (Mn)	1.00-1.60	1.00-1.60	1.00-1.60	1.00-1.60
Chromium (Cr)	0.50-1.20	0.60-1.30	0.70-1.40	0.80-1.50
Molybdenum (Mo)	0.20-0.50	0.25-0.55	0.30-0.60	0.35-0.65
Nickel (Ni)	0.60-1.20	0.70-1.30	0.80-1.40	0.90-1.50
Boron (B)	0.001-0.005	0.001-0.005	0.001-0.005	0.001-0.005

3. Mechanical Properties

Grade	Hardness (HB)	Yield Strength (MPa)	Tensile Strength (MPa)	Impact Energy (J, -20°C)
NM360	340-400	≥ 1000	≥ 1200	≥ 24
NM400	370-430	≥ 1200	≥ 1400	≥ 24
NM450	420-480	≥ 1300	≥ 1500	≥ 20
NM500	470-530	≥ 1400	≥ 1600	≥ 18
NM550	520-580	≥ 1500	≥ 1700	≥ 16
NM600	570-630	≥ 1600	≥ 1800	≥ 14

4. Physical Properties

Property	Typical Value	Test Standard
Density	7.85 g/cm³	ASTM E1266
Modulus of Elasticity	200-210 GPa	ASTM E111
Poisson's Ratio	0.28-0.30	-
Thermal Expansion Coefficient	11.5-12.5 × 10⁻⁶/°C	ASTM E228
Thermal Conductivity	35-45 W/m·K	ASTM E1225

5. Product Specifications

Parameter	Standard Range	Tolerance	Available Customization
Thickness	6mm - 120mm	±0.5mm	4mm - 150mm
Width	1500mm - 3200mm	±10mm	1000mm - 4000mm
Length	6000mm - 12000mm	+30mm/-0mm	2000mm - 18000mm
Flatness	≤ 10mm/2000mm	-	≤ 5mm/2000mm
Camber	≤ 2mm/1000mm	-	≤ 1mm/1000mm

6. Heat Treatment Process

Quenching & Tempering Process:

Austenitizing temperature: 880-920°C
Quenching medium: Water or oil
Tempering temperature: 200-300°C
Cooling method: Controlled cooling

7. Workability

Weldability:

Preheating temperature: 100-200°C
Post-weld heat treatment: Recommended
Welding methods: SMAW, GMAW, GTAW

Machinability:

Cutting speed: Medium
Tool material: Carbide
Coolant: Required

8. Testing & Inspection

Standard Tests:

Hardness testing (Brinell/Rockwell)
Tensile test
Impact test
Bend test
Chemical analysis
Ultrasonic testing
Surface quality inspection

Optional Tests:

Microstructure analysis
Wear resistance test
Fatigue test
Third-party inspection

9. Applications

Primary Applications:

Mining Machinery: Excavator buckets, loader teeth
Construction Equipment: Bulldozer blades, concrete mixer drums
Material Handling: Chutes, hoppers, conveyor liners
Agricultural Machinery: Harvester blades, plowshares
Power Equipment: Coal mill liners, fan blades

All wear-resistant steel plates are manufactured according to international standards and can be customized to meet specific customer requirements and application needs.

◉ Surfcae selection

SURFACE	CHARACTERISTIC	SUMMARY OF MANUFACTURING METHOD	APPLICATION
NO.1	Silvery white	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.1	lackluster	Hot rolled to specified thickness	Do not need to have a glossy surface use
NO.2D	Silvery white	After cold rolling, heat treatment and pickling are carried out	General material, deep material
NO.2B	Gloss is stronger than No.2D	After No.2D treatment, the final light cold rolling is carried out through the polishing roller	The general material
BA	As bright as a sixpence	No standard, but usually a bright annealed surface with high reflectivity.	Building materials, kitchen utensils
NO.3	Rough lapping	Grind with 100~200# (unit) strop tape	Building materials, kitchen utensils
NO.4	Intermediate grinding	Polished surface obtained by grinding with 150~180# strop abrasive tape	Building materials, kitchen utensils
NO.240	Fine lapping	Grinding with 240# strop abrasive tape	kitchenware
NO.320	Very fine grinding	Grinding was carried out with 320# strop abrasive tape	kitchenware
NO.400	The luster is close to BA	Use 400# polishing wheel to grind	General timber, building timber, kitchen appliances
HL	Hairline grinding	Suitable particle material for hair stripe grinding (150~240#) with many grains	Building, construction material
NO.7	It's close to mirror grinding	Use a 600# rotary polishing wheel to grind	For art or decoration
NO.8	Mirror ultrafinish	The mirror is ground with a polishing wheel	Reflector, for decoration