Ar400 Steel Sheet
AR400, AR450, AR500, and AR600 steel sheets are all abrasion resistant steels designed for industrial wear applications, but they differ mainly in hardness, 耐摩耗性, and processing characteristics.
- AR400 provides the best balance of toughness and wear resistance
- AR450 improves abrasion performance
- AR500 is suitable for severe wear conditions
- AR600 delivers maximum hardness for extreme abrasive environments
- 説明
AR steel sheets are abrasion resistant steel materials designed for industries exposed to heavy wear, 摩擦, そして影響. “AR” stands for Abrasion Resistant, while the numbers 400, 450, 500, そして 600 refer to the approximate Brinell hardness (HB) of the material.
As hardness increases, wear resistance generally improves, but toughness, 溶接性, and formability may decrease. Choosing the correct grade depends on the balance between abrasion resistance and processing requirements.
1. Basic Hardness Comparison
| 学年 | Approximate Hardness | Wear Resistance Level |
|---|---|---|
| AR400 | ～400HB | 良い |
| AR450 | ~450 HB | より良い |
| AR500 | ～500HB | 素晴らしい |
| AR600 | ~600HB | 過激 |
Higher hardness means stronger resistance to abrasive wear and longer service life in severe environments.
2. 化学組成の比較
All AR grades use alloy strengthening and heat treatment, but higher grades generally contain more alloy optimization for hardenability.
| 要素 | Function in AR Steel |
|---|---|
| 炭素 (C) | Increases hardness |
| クロム (Cr) | 耐摩耗性の向上 |
| マンガン (ん) | 靭性を高める |
| ニッケル (で) | Improves impact performance |
| モリブデン (モー) | Stabilizes hardened structure |
| ボロン (B) | Improves hardenability |
As hardness increases from AR400 to AR600:
- Carbon and alloy strengthening become more important
- Heat treatment control becomes more critical
- Material brittleness risk increases
3. 性能比較
| 財産 | AR400 | AR450 | AR500 | AR600 |
|---|---|---|---|---|
| 耐摩耗性 | 良い | より良い | 素晴らしい | 過激 |
| 靭性 | 高い | 良い | 適度 | より低い |
| 溶接性 | 良い | Moderate-good | 適度 | 難しい |
| 成形性 | より良い | 適度 | Reduced | 限定 |
| 被削性 | Easier | 適度 | 難しい | Very difficult |
| 耐用年数 | 長さ | Longer | Very long | 最大 |
4. Application Differences
AR400 Steel Sheet
Best for balanced wear and impact environments.
一般的なアプリケーション:
- 建設機械
- Agricultural machinery
- General mining liners
- Medium-duty wear plates
AR450 Steel Sheet
Used where higher wear resistance is needed without greatly reducing toughness.
アプリケーション:
- Heavy mining equipment
- Material transfer chutes
- Quarry machinery
AR500 Steel Sheet
Designed for severe abrasive wear conditions.
アプリケーション:
- ダンプトラックの車体
- クラッシャーライナー
- High-abrasion conveyors
- Cement plant wear systems
AR600 Steel Sheet
Extreme hardness for maximum wear life.
アプリケーション:
- Severe sliding abrasion systems
- Extreme mining wear environments
- Specialized industrial liners
AR600 is generally used where abrasion is extremely severe and impact loading is limited.
5. Processing Difficulty Comparison
As hardness increases, fabrication becomes more difficult.
| Processing Type | AR400 | AR450 | AR500 | AR600 |
|---|---|---|---|---|
| 溶接 | Easier | 制御された | More difficult | Highly controlled |
| 曲げ | 良い | 適度 | 限定 | Very limited |
| 切断 | 簡単 | 適度 | 難しい | 難しい |
| 機械加工 | 適度 | Harder | 難しい | Very difficult |
Higher hardness grades usually require:
- Preheating before welding
- Stronger tooling
- Larger bending radius
- Controlled cutting processes
6. Service Life Comparison
In abrasive environments:
- AR450 generally lasts longer than AR400
- AR500 significantly improves wear life over AR400
- AR600 offers maximum wear resistance but may sacrifice toughness
The actual service life depends on:
- 摩耗の種類
- 影響レベル
- Material flow speed
- 動作温度
7. Selection Recommendations
| 適用条件 | 推奨グレード |
|---|---|
| Mixed impact + 摩耗 | AR400 |
| Medium-heavy abrasion | AR450 |
| ひどい磨耗 | AR500 |
| Extreme sliding wear | AR600 |
