🟧 Product Overview

NM450 / AR450 / Hardox 450 represents the 450 HBW class of global wear‑resistant steels. This category provides significantly higher hardness and abrasion resistance than the 360 / 400 series, while maintaining strong impact toughness.

• NM450 – Chinese GB/T 24186 standard
• AR450 – International generic abrasion‑resistant steel
• Hardox 450 – Swedish SSAB premium grade with superior toughness and consistency

These steels are widely used in mining machinery, loader buckets, dump truck liners, cutting edges, and industrial wear plates where high hardness and durability are required.

🟧 Standards

• GB/T 24186 – Wear Resistant Steel
• SSAB Hardox – Premium wear‑resistant steel
• AR Steel – International abrasion‑resistant steel classification

🟧 International Wear‑Resistant Steel Comparison Table

Country	Standard	Common Grades
China	GB/T 24186	NM360, NM400, NM450, NM500
Sweden	SSAB Hardox	Hardox 400, Hardox 450, Hardox 500
Japan	JFE EH Series	JFE EH360, EH400, EH450
Europe	EN 10051 (hot‑rolled coil tolerance)	Used for dimensional reference
International	AR Steel (generic)	AR400, AR450, AR500

🟧 Available Grades

• NM450
• AR450
• Hardox 450

🟧 Product Specifications & Available Sizes

Dimensions

• Thickness: 3 – 20 mm
• Width: 1000 – 2000 mm
• Coil ID: 508 mm / 610 mm
• Coil OD: 900 – 2000 mm
• Coil Weight: 3 – 15 MT

Regular Sizes (mm)

Size	Size
3.0 × 1500 × C	5.75 × 1800 × C
3.5 × 1500 × C	5.75 × 2000 × C
3.75 × 1500 × C	7.75 × 2000 × C
4.5 × 1500 × C	7.5–11.75 × 1500 × C

🟧 Chemical Composition (NM450 / AR450 – typical)

Element	Max (%)
C	0.30
Mn	1.60
P	0.025
S	0.010
Si	0.50
Cr	1.30
Mo	0.60
B	0.004

🟧 Mechanical Properties (NM450 / AR450 / Hardox 450 – typical)

Property	Value
Hardness	450 HBW (nominal)
Yield Strength	≥ 1100 MPa
Tensile Strength	≥ 1350 MPa
Elongation	≥ 10%
Impact Toughness	Excellent for severe wear applications

🟧 Physical Properties

• Density: 7.85 g/cm³
• Modulus of elasticity: 210 GPa
• Thermal expansion: 12×10⁻⁶ /K

🟧 Manufacturing Processes

• Hot rolling
• Quenching & tempering
• Leveling
• Pickling (optional)
• Slitting / Cutting to length
• Surface oiling

🟧 Primary Industry Usage

• Mining equipment
• Loader and excavator buckets
• Dump truck liners
• Bulldozer blades
• Cutting edges and wear strips
• Industrial wear plates and liners

🟧 Why Use NM450 / AR450 / Hardox 450 Wear Resistant Steel Coil

• Higher hardness and wear resistance than 360 / 400 series
• Excellent impact resistance for severe wear environments
• Long service life in mining and heavy machinery applications
• Compatible with global wear‑resistant steel standards

🟧 Why Choose WelSteels

• Full range of NM / AR / Hardox‑equivalent wear‑resistant steel coils
• Stable hardness and mechanical properties
• Custom coil cutting and slitting
• SGS / BV inspection available
• Export‑grade seaworthy packaging
• Reliable delivery for global projects