420 販売用ステンレス鋼シート
420 stainless steel sheet is a high-carbon martensitic stainless steel designed for applications requiring 硬度, 強さ, そして耐摩耗性. Its ability to be heat treated makes it ideal for 切削工具, 産業用部品, and precision mechanical parts.
- 説明
420 stainless steel sheet is a マルテンサイト系ステンレス鋼 で知られる 高硬度, good wear resistance, and ability to be heat treated. It is often referred to as a “cutlery-grade” stainless steel due to its excellent edge retention after hardening.
It is widely used in applications where strength and hardness are more important than corrosion resistance.
の化学組成 420 ステンレス鋼
代表的な組成範囲
| 要素 | コンテンツ (%) |
|---|---|
| クロム (Cr) | 12.0 – 14.0 |
| 炭素 (C) | 0.15 – 0.40 |
| マンガン (ん) | ≤ 1.0 |
| シリコン (そして) | ≤ 1.0 |
| リン (P) | ≤ 0.04 |
| 硫黄 (S) | ≤ 0.03 |
Key Composition Features
- より高い炭素含有量 よりも 410 improves hardness and strength
- クロム含有量 provides basic corrosion resistance
- No significant nickel content, keeping cost relatively moderate
機械的性質 420 ステンレス鋼板
| 状態 | 硬度 | 抗張力 |
|---|---|---|
| 焼き鈍し | ~180–220 HB | ~600 MPa |
| Hardened & Tempered | 最大 50 ～ 55 HRC | 700–900 MPa |
性能特性
- Excellent hardness after heat treatment
- 優れた耐摩耗性と耐摩耗性
- Moderate strength and toughness
- Lower ductility compared to austenitic stainless steels
熱処理能力
420 ステンレス鋼は可能です hardened by heat treatment, which is one of its key advantages.
Typical Heat Treatment Process
- 硬化: 980–1050°C → quenching
- テンパリング: 150–400°C depending on required hardness
結果:
- Increased hardness and strength
- Improved wear resistance
耐食性
420 ステンレス鋼のオファー 適度な耐食性, but it is lower than grades like 304 または 316.
Performance Overview
- に適しています ドライ, indoor, または軽度の腐食性環境
- Limited resistance to:
- Chlorides
- Acids
- 海洋環境
注記:
Polished surfaces improve corrosion resistance performance.
Fabrication and Processing
機械加工
- Good machinability in annealed condition
- Harder to machine after heat treatment
溶接
- Limited weldability
- Preheating and post-weld heat treatment recommended
形にする
- Limited formability compared to austenitic grades
- Best processed before hardening
一般的な用途 420 ステンレス鋼板
Cutting and Blade Applications
- Knives and cutlery
- 手術器具
- Scissors and blades
産業用コンポーネント
- Valves and pump parts
- Shafts and gears
- Wear-resistant parts
Tooling and Mechanical Use
- 金型と金型 (light duty)
- Measuring instruments
- Mechanical components requiring hardness
420 他のステンレス鋼グレードとの比較
| 財産 | 420 | 410 | 304 |
|---|---|---|---|
| 炭素含有量 | より高い | より低い | 非常に低い |
| 硬度 | 非常に高い | 適度 | 低い |
| 耐食性 | 適度 | 適度 | 素晴らしい |
| 熱処理可能 | はい | はい | いいえ |
| 主な用途 | ブレード, wear parts | 汎用 | 耐食性 |
の利点 420 ステンレス鋼板
- High hardness after heat treatment
- Excellent wear resistance
- Good polishability (can achieve mirror finish)
- Cost-effective for tooling and blade applications
制限事項
- Lower corrosion resistance than austenitic stainless steels
- Reduced ductility and weldability
- Not suitable for highly corrosive environments
