Name: Wear Steel Coil
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Wear Steel Coil

Wear-resistant steel coil is a high-strength steel product manufactured through advanced thermomechanical control processes (TMCP) and heat treatment technologies. These coils feature exceptional hardness, superior impact toughness, and excellent wear resistance, making them ideal for applications in mining, construction, and material handling industries where abrasion resistance is critical.

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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
ASTM A514 - High-Yield-Strength, Quenched and Tempered Alloy Steel Plate

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
Phosphorus (P)	≤ 0.020	≤ 0.020	≤ 0.020	≤ 0.020
Sulfur (S)	≤ 0.010	≤ 0.010	≤ 0.010	≤ 0.010

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	3.0mm - 20.0mm	±0.15mm	2.0mm - 30.0mm
Width	1000mm - 2000mm	±2mm	800mm - 2500mm
Coil Weight	5-25 tons	±3%	3-30 tons
Coil ID	508mm/610mm	±5mm	400mm-800mm
Coil OD	1000mm-1800mm	±20mm	800mm-2000mm

6. Manufacturing Process

Production Methods:

Hot rolling with TMCP
Quenching and tempering
Controlled cooling
Surface conditioning

Process Flow:
Slab Reheating → Roughing → Finishing → Accelerated Cooling
→ Quenching → Tempering → Coiling → Inspection

7. Surface Treatment Options

Treatment Type	Thickness/Finish	Application Method	Purpose
Shot Blasted	Sa 2.5	Mechanical blasting	Surface cleaning
Primed	15-25μm	Spray coating	Corrosion protection
Oiled	-	Roller coating	Temporary protection
PVC Film	0.1mm	Lamination	Scratch protection

8. Testing & Inspection

Standard Tests:

Hardness testing (Brinell/Rockwell)
Tensile testing
Charpy impact testing
Bend testing
Chemical analysis
Ultrasonic testing
Surface quality inspection

Optional Tests:

Microstructure analysis
Wear resistance test
Fatigue test
Third-party inspection
PMI verification

9. Applications

Primary Applications:

Mining Equipment: Truck beds, loader buckets, crusher liners
Construction Machinery: Bulldozer blades, excavator buckets
Material Handling: Hoppers, chutes, conveyor liners
Agricultural Equipment: Plow shares, harvester components
Industrial Equipment: Mill liners, mixer blades

Industry Applications:

Mining and mineral processing
Construction and demolition
Cement and aggregate production
Power generation
Recycling and waste management

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

◉ 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

◉ PRODUCTION AND WAREHOUSING

◉ MESSAGE

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