- 説明
303 stainless sheet is a free-machining austenitic stainless steel material designed for applications requiring excellent machinability and good corrosion resistance. It is a modified version of 304 ステンレス鋼, with added sulfur to improve cutting performance. Because of this, 303 stainless steel sheet is commonly used for precision machining parts, 産業用部品, そして機械加工.
とは何ですか 303 ステンレスシート?
303 stainless sheet is an austenitic chromium-nickel stainless steel known for its outstanding machinability. The addition of sulfur improves chip breaking during machining, making it easier to cut, drill, mill, and turn compared with standard 304 ステンレス鋼.
それでも 303 has slightly lower corrosion resistance than 304, it offers better processing efficiency for parts that require extensive machining.
の化学組成 303 ステンレス鋼
The chemical composition of 303 stainless sheet provides a balance between corrosion resistance and machinability.
| 要素 | コンテンツ (%) |
|---|---|
| 炭素 (C) | ≤ 0.15 |
| クロム (Cr) | 17.0 – 19.0 |
| ニッケル (で) | 8.0 – 10.0 |
| マンガン (ん) | ≤ 2.00 |
| シリコン (そして) | ≤ 1.00 |
| リン (P) | ≤ 0.20 |
| 硫黄 (S) | ≥ 0.15 |
| 鉄 (鉄) | バランス |
The elevated sulfur content is the main feature that distinguishes 303 from other austenitic stainless steel grades.
機械的性質 303 ステンレスシート
303 stainless steel provides good mechanical strength while maintaining excellent machinability.
| 財産 | 代表値 |
|---|---|
| 抗張力 | ≥ 520 MPa |
| 降伏強さ | ≥ 205 MPa |
| 伸長 | ≥ 35% |
| 硬度 | ≤ 241 HB |
| 密度 | 7.93 g/cm3 |
| 溶解範囲 | 1400 – 1450℃ |
It remains non-magnetic in annealed condition but may become slightly magnetic after cold working.
主な性能特性
優れた被削性
303 stainless steel is widely recognized for its superior machinability among austenitic stainless steels. It performs well in:
- CNC加工
- 旋回
- 掘削
- Milling
- Threading
- 精密切断
Its machinability can be significantly better than 304 due to sulfur inclusion.
優れた耐食性
303 offers good corrosion resistance in mild atmospheric and industrial environments, though it is slightly lower than 304 because sulfur reduces pitting resistance.
Good Surface Finish
The material can achieve a smooth machined finish, making it suitable for visible precision components.
Non-Heat Treatable
Like most austenitic stainless steels, 303 cannot be hardened by heat treatment but can be strengthened by cold working.
一般的な用途 303 ステンレスシート
303 stainless steel sheet is widely used for components that require machining and moderate corrosion resistance.
- Precision machined parts
- シャフト
- ファスナー
- 歯車
- ナットとボルト
- バルブコンポーネント
- ブシュ
- Aerospace fittings
- 楽器部品
- 電気コネクタ
It is especially suitable for parts manufactured by CNC processing.
303 対 304 ステンレス鋼
| 特徴 | 303 ステンレスシート | 304 ステンレスシート |
|---|---|---|
| 構造 | オーステナイト系 | オーステナイト系 |
| 硫黄分 | より高い | 標準 |
| 被削性 | 素晴らしい | 適度 |
| 耐食性 | 良い | より良い |
| 溶接性 | より低い | より良い |
| 一般的な使用方法 | Machined parts | 一般的な製造 |
303 is preferred for machining-intensive parts, その間 304 is better for welding and corrosion-critical applications.
一般的なシートサイズ
303 stainless sheet is commonly supplied in thin and medium gauge formats.
| 厚さ | 幅 | 長さ |
|---|---|---|
| 0.5 mm | 1000 mm | 2000 mm |
| 1.0 mm | 1219 mm | 2438 mm |
| 2.0 mm | 1500 mm | 3000 mm |
| 3.0 mm | 1500 mm | 6000 mm |
Custom laser cutting and machining services are commonly used for industrial projects.
