Stainless Steel CNC Machining Service
Superior-quality stainless steel machining with precision, strength, and versatility for various industries. Cutting-edge facilities and experienced team delivering custom stainless steel parts that perform reliably in the most demanding environments.
Stainless Steel in CNC Machining
Stainless steel is a family of steel alloys containing chromium, which provides a protective oxide layer and gives the material its excellent resistance to corrosion and oxidation. It is widely used in CNC machining for components that require strength, durability, hygiene, and resistance to moisture or chemicals.
Different stainless steel grades provide different combinations of corrosion resistance, strength, hardness, machinability, and temperature performance. Austenitic grades such as 304 and 316 are widely used for general-purpose and corrosion-resistant applications, while 17-4 PH provides higher strength and hardness after heat treatment.
Stainless steel can be CNC machined into complex and precise components for industries including medical, food processing, aerospace, automotive, marine, chemical processing, and industrial equipment.
Available Stainless Steel at Elite Mold Tech:
| 取り扱い合金 | Stainless Steel 304, 316, 17-4 PH |
| 価格 | $ |
| リードタイム | 10日未満 |
| 肉厚 | 0.75 mm |
| 公差 | ±0.125 mm（±0.005 インチ） |
| 最大部品サイズ | 200 x 80 x 100 cm |
ステンレス鋼304
Stainless Steel 304 is one of the most widely used stainless steel grades for CNC machining. It provides excellent corrosion resistance, good strength, and good formability, making it suitable for general industrial, food processing, medical, and consumer applications.<
引張降伏強度（MPa）
215
疲労強度（MPa）
240
破断伸び（%）
40
硬度（ブリネル）
123
密度（g/cm³）
8.00
Stainless Steel 316
Stainless Steel 316 provides improved corrosion resistance compared with 304, particularly in chloride-rich and marine environments. Its molybdenum content improves resistance to pitting and crevice corrosion, making it suitable for chemical, marine, medical, and food-processing applications.
引張降伏強度（MPa）
205
疲労強度（MPa）
240
破断伸び（%）
40
硬度（ブリネル）
149
密度（g/cm³）
8.00
ステンレス鋼 17-4 PH
17-4 PH is a precipitation-hardening stainless steel that provides high strength, hardness, and good corrosion resistance. It can be heat treated to achieve different mechanical properties and is commonly used for demanding aerospace, industrial, and mechanical components.
引張降伏強度（MPa）
1000
疲労強度（MPa）
510
破断伸び（%）
10
硬度（ブリネル）
293
密度（g/cm³）
7.75
一般的なCNC加工公差
| 説明 | 一般公差または標準 |
|---|---|
| 一般寸法公差 | ±0.005″ (±0.127 mm) for metals; ±0.010″ (±0.254 mm) for plastics in line with ISO 2768-mK unless otherwise specified |
| 厳しい公差 | Down to ±0.001″ (±0.025 mm) available upon request, with detailed 2D drawings and GD&T specifications |
| 最小フィーチャーサイズ | ~0.020″ (0.50 mm), depends on part geometry, tool diameter, and material |
| 穴径公差 | ±0.002″ (±0.05 mm) typical; tighter tolerances with boring or reaming |
| 平坦性／平行性 | ≤0.002″ per 6″ (≤0.05 mm per 150 mm), varies by material and fixture setup |
| ネジの公差 | ISO/ASMEに準拠した標準のメートルねじとインペリアルねじ、ご要望に応じてカスタムねじや細目ねじも承ります。 |
| 角度公差 | 標準 ±0.5 |
| エッジコンディション | 特に断りのない限り、鋭利なエッジはデフォルトで折られ、バリ取りされます。 |
| 表面仕上げ（標準） | 機械加工時のRaは3.2μm（125μin）。研磨、ビーズブラスト、陽極酸化処理などによる仕上げの向上が可能。 |
| 最大部品サイズ | Milling: Up to 80″ × 48″ × 24″ (2,032 × 1,219 × 610 mm) Turning: Up to 62″ length × 32″ diameter (1,575 × 813 mm) |
エリート金型技術によって作られたカスタムCNC加工部品
エリートMold TechのCNC機械加工部品は、幅広い産業向けに優れた仕上げと厳しい公差を持つ高精度部品を提供しています。私たちのCNC機械加工サービスは、プロトタイピングと本格的な製造の両方に理想的なカスタム部品の信頼性の高い、正確かつ効率的な生産を保証します。
Advantages and Limitations of Stainless Steel CNC Machining
Stainless steel provides an excellent combination of corrosion resistance, strength, durability, and appearance, making it suitable for demanding CNC applications. However, its hardness and work-hardening behavior can make machining more challenging than softer materials.
メリット
- Excellent Corrosion Resistance: Stainless steel can withstand moisture, chemicals, and many corrosive environments without rapidly degrading.
- High Strength: Many stainless steel grades provide strong mechanical performance for demanding components.
- Excellent Durability: Stainless steel offers good resistance to wear, impact, and mechanical stress.
- Hygienic Surface: Its smooth and corrosion-resistant surface makes it suitable for food processing, medical, and pharmaceutical applications.
- High Temperature Performance: Several stainless steel grades can maintain useful mechanical properties at elevated temperatures.
制限事項
- More Difficult to Machine: Stainless steel can generate higher cutting forces and may work harden during machining.
- Higher Tool Wear: Improper cutting conditions can accelerate tool wear, particularly with harder stainless steel grades.
- Higher Material Cost: Stainless steel generally costs more than mild steel and some aluminum alloys.
- Heat Management: Stainless steel can retain heat near the cutting zone, requiring suitable cutting parameters and coolant strategies.
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Stainless steel CNC Machining FAQs
What are the challenges of machining stainless steel?
Machining stainless steel can be challenging due to its tendency to work harden, leading to increased tool wear. Its low thermal conductivity causes excessive heating during machining, affecting both the material and tools. Improper tools or speeds can damage the material, making the process slow and arduous. Moreover, high-performance cutting tools for stainless steel are more expensive than those for softer materials, with frequent tool changes increasing production costs and downtime.
What grade of stainless steel is best for machining?
416 stainless steel is the most machinable of the stainless steels. In general, machining 400 series stainless steel grades is relatively straightforward. Conversely, machining 300 series stainless steel grades poses more challenges. SUS303 is often considered the best for machining among the 300 series while SUS304 provides a good balance between corrosion resistance and machinability, making it a versatile choice for many applications.
Why is stainless steel low maintenance?
Stainless steel’s inherent corrosion resistance and durability reduce the need for frequent maintenance, providing long-lasting performance in various applications. It also resists bacterial growth and is easy to clean and sterilize, making it low maintenance. It can be effectively cleaned with a swab and an all-purpose cleaner, making it ideal for use in kitchens and hospitals.