AR 450 Steel Plate
AR 450 steel plate corresponds closely to China’s NM450 grade. Both offer excellent abrasion resistance, high hardness, and good impact toughness, making them ideal for high-wear industrial applications.
Selecting a Chinese equivalent like NM450 can offer cost savings while maintaining performance comparable to AR 450.
- Description
AR 450 steel plate is a high-hardness, abrasion-resistant steel widely used in mining, construction, and heavy machinery.
With a nominal hardness of HB 450, it provides excellent wear resistance and impact toughness for high-abrasion applications.
1. Key Characteristics of AR 450
| Property | Value |
|---|---|
| Hardness (HB) | 445–475 |
| Tensile Strength | 850–1000 MPa |
| Yield Strength | 600–800 MPa |
| Impact Toughness | 25–40 J at room temperature |
| Composition | High-carbon alloy steel with controlled Mn, Cr, Mo |
Features:
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High abrasion resistance for wear-prone parts like chutes, hoppers, and buckets
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Good impact toughness to withstand shock loads
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Can be welded, cut, and fabricated for custom applications
2. Chinese Equivalent Grades
In China, AR 450 steel plate is generally equivalent to NM450 under GB/T 24186 standards:
| AR 450 | Chinese Equivalent | Hardness (HB) | Notes |
|---|---|---|---|
| AR 450 | NM450 | 440–460 | Both have similar hardness, wear resistance, and weldability |
| AR 450 | Q+450 / GB450 | 440–470 | Available in plate and sheet forms for industrial use |
Key Comparison:
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Hardness: AR 450 ≈ NM450 (~HB450)
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Chemical composition: Similar alloying elements (C, Mn, Cr, Mo)
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Applications: Both are used for high-wear industrial components
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Availability: NM450 plates are widely available in China at a cost-effective price
3. Common Applications
| Industry | Components |
|---|---|
| Mining & Quarrying | Crusher liners, bucket liners, hoppers |
| Cement & Construction | Mixer blades, feed chutes, conveyor liners |
| Metallurgy | Furnace liners, hoppers, chutes |
| Heavy Equipment | Excavator buckets, dump truck bodies |
