ハー 400 鋼鉄
ハー 400 offers higher alloy strength, impact toughness and wear resistance, making it ideal for heavy-duty mining and quarry applications. NM400 provides sufficient performance for general industrial abrasion needs, with simpler composition and easier cost control.
If selecting a material for high-impact or extreme wear, ハー 400 is typically the stronger option. For moderate wear applications with budget consideration, NM400 is a reliable alternative.
- 説明
ハー 400 高性能です 焼き入れおよび焼き戻し (Q&T) 耐摩耗性鋼 designed for heavy-duty abrasion and impact working environments. 鉱山機械に広く使用されています, 重機, truck bodies, 採石, and loading machines. NM400 is also a widely used wear-resistant steel grade, particularly common in Asian industrial applications.
While both Xar 400 and NM400 are classified as 400 HB hardness grades, they differ in chemical composition, performance stability, 靭性, and processing characteristics.
Key Characteristics of Xar 400
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Nominal hardness of ～400HB
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High toughness and resistance to crack propagation
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Good bending, 切断, and welding performance
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Consistent mechanical stability due to strict alloy control
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Suitable for heavy abrasion combined with strong impact loading
ハー 400 vs NM400 – Composition and Performance Comparison
化学組成の比較 (Typical Values)
| 学年 | C (%) | ん (%) | Cr (%) | で (%) | モー (%) | B (%) |
|---|---|---|---|---|---|---|
| ハー 400 | 0.20–0.25 | 1.0-1.6 | 0.5-1.5 | 0-1.0 | 0.3–0.6 | ≤0.005 |
| NM400 | 0.15–0.26 | 1.0-1.6 | 0.3–0.7 | — | — | — |
Values shown are typical ranges for comparison; actual composition varies by production specification.
Performance Comparison Table
| 財産 | ハー 400 | NM400 |
|---|---|---|
| 硬度 (HB) | 370–430 | 360–430 |
| 降伏強さ | >1000 MPa | 900–1000 MPa |
| 衝撃靱性 | 非常に高い | 中～高 |
| 耐摩耗性 | 素晴らしい | 良い |
| Crack & Break Resistance | Better at high impact | 適度 |
| Welding Performance | Good with control | 良い |
| 曲げ / 形にする | Better cold bending capability | 標準 |
| Service Life in Extreme Wear | Longer and more stable | 適度 |
Key Differences Between Xar 400 and NM400
1. Alloy Design
ハー 400 includes additional alloying elements such as chromium, molybdenum and nickel, which significantly improve:
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Hardenability and wear resistance
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Toughness and crack resistance
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Performance stability during machining and welding
NM400 has a simpler alloy system, making it more cost-efficient but slightly lower in impact durability.
2. Service Performance
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ハー 400 performs better in environments with extremely high wear and repeated impact, such as chute liners and crusher components.
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NM400 is suitable for general abrasion with moderate impact, such as truck bodies and buckets.
3. Processing Behavior
ハー 400 is easier to cold form without cracking due to higher toughness. NM400 may require more processing control.
代表的な用途
ハー 400
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Dump truck and mining truck bodies
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Crusher liners and chute plates
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Excavator and loader bucket components
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Hammer mills and shredders
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Conveyor scrapers and wear bars
NM400
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Construction machinery bodies
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Bucket side panels and blades
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輸送およびエンジニアリングの摩耗部品
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適度な衝撃を与える板状構造部品
