ウェアプレート 400
ウェアプレート 400 (AR400 / NM400) provides an ideal balance of hardness, 靭性, and fabrication performance.
It is internationally recognized with equivalents such as ハードックス 400 (EU), XAR 400 (ドイツ), そしてAR400 (アメリカ合衆国), making it a reliable choice for 採掘, 工事, セメント, and material handling industries.
- 説明
ウェアプレート 400 を指します abrasion resistant steel with a Brinell hardness of approximately 400 HBW.
It is widely used in 採掘, 工事, セメント, and material handling industries, offering 優れた耐摩耗性 維持しながら good toughness and fabrication performance.
The exact chemical composition and grade designation vary between countries, but all share similar hardness and mechanical properties.
Common International Grades Equivalent to AR400 / NM400
| 地域 / 標準 | Grade Equivalent | 硬度 (HBW) | 降伏強さ (MPa) | 抗張力 (MPa) | 衝撃靱性 (j, -40℃) |
|---|---|---|---|---|---|
| アメリカ合衆国 / ASTM | AR400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 |
| ヨーロッパ / で | ハードックス 400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 |
| ドイツ / から | XAR 400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 |
| 中国 / GB | NM400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 |
| 日本 / 彼 | NM400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 |
| Australia / AS | AR400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 |
注記: 硬度, 強さ, and impact values are approximate averages; exact values depend on plate thickness and manufacturer heat treatment.
機械的性質
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硬度: 360–440 HBW ensures 高い耐摩耗性 for sliding and light impact abrasion.
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降伏強さ: 1000–1250 MPa allows the plate to withstand heavy loads without permanent deformation.
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抗張力: 1200–1400 MPa ensures the plate can resist stretching under stress.
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衝撃靱性: ≥27 J at -40°C provides sufficient resistance to cracking during moderate impact.
代表的な用途
| Application Area | 例 | Reason for Use |
|---|---|---|
| マイニング | Truck liners, ホッパー, feeder plates | Resistant to sliding abrasion from ore and rock |
| 工事 | 掘削機バケット, ブルドーザーのブレード | Balances wear resistance and formability |
| セメント & コンクリート | Mixers, 滝, コンベア | Protects against sand and gravel wear |
| マテリアルハンドリング | コンベヤプレート, 滝 | Extends service life under abrasive materials |
| Light Impact Areas | Storage bins, ライナー | Sufficient toughness for moderate impact |
Key Selection Notes
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AR400 / NM400 is a versatile grade suitable for medium abrasion + moderate impact conditions.
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For higher wear resistance, choose AR450 or AR500, but fabrication becomes more challenging.
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For impact-heavy applications, 考慮する MN13 (高マンガン鋼), which work-hardens under repeated impact.
