هُم 304 الفولاذ المقاوم للصدأ – الصين الصلب المورد
هُم 304 is a highly versatile and widely used austenitic stainless steel. معروف بمقاومته الممتازة للتآكل, القوة الميكانيكية, والقدرة على التكيف, it is often referred to as 18-8 stainless steel due to its composition of approximately 18% الكروم (كر) و 8% النيكل (في). This material is extensively employed in industries such as construction, تجهيز الأغذية, and chemicals.
Material Characteristics of SUS 304
- مقاومة التآكل: هُم 304 performs exceptionally well against water, الأحماض, and alkalis, making it ideal for corrosive environments.
- القدرة على التصنيع: It is easy to cut, استمارة, and weld, making it suitable for various machining processes.
- مقاومة درجات الحرارة العالية: It remains stable under high temperatures, making it useful for heat exchangers and burner components.
- Low Magnetism: في درجة حرارة الغرفة, it is nearly non-magnetic, which is important for electronics and medical devices.
Chemical Composition of SUS 304
- الكروم (كر): ~18%, enhancing corrosion resistance.
- النيكل (في): ~8%, improving corrosion resistance and structural stability.
- الكربون (ج): Less than 0.08%, minimizing carbide precipitation during welding.
- حديد (الحديد): Base element providing structural stability.
304 Chemical Properties (%)
Mechanical Properties of SUS 304
- قوة الشد: 520-600 الآلام والكروب الذهنية, providing strong structural support.
- قوة العائد: 205-240 الآلام والكروب الذهنية, ensuring resilience under stress.
- استطالة: زيادة 40%, indicating excellent ductility.
304 الخواص الميكانيكية
| MIN | MAX | ||
|---|---|---|---|
| قوة العائد (N/mm2) | 0.20% Y.S. | 205 | N/mm2 |
| 1% Y.S. | === | ||
| قوة الشد (N/mm2) | 520 | N/mm2 | |
| استطالة % | 40 | === | |
| اختبار الصلابة | HRB | === | 90 |
| الجهد العالي | === | 200 |
Physical Properties of SUS 304
- كثافة: ~7.93 g/cm³, balancing strength and weight.
- الموصلية الحرارية: ~16.3 W/m·K, enabling effective heat transfer.
- Electrical Conductivity: معتدل, making it suitable for electrical applications.
Corrosion Resistance of SUS 304
- Water and Humid Environments: Highly resistant, making it common in construction, معدات المطبخ, and water systems.
- Chemical Environments: Resistant to various chemicals, suitable for tanks, pipelines, and chemical equipment.
- تجهيز الأغذية: Ensures no impact on food quality or taste, ideal for processing and storage.
- Pharmaceutical Use: Non-contaminating, making it suitable for lab and pharmaceutical equipment.
Applications of SUS 304
- بناء: Used in architectural structures, exterior finishes, and roofing.
- صناعة الأغذية والمشروبات: Found in kitchen utensils, معدات تجهيز الأغذية, and containers.
- الصناعة الكيميائية: Ideal for tanks, pipelines, and valves.
- Medical Equipment: Common in surgical instruments and laboratory tools.
- Automotive Sector: Used in exhaust systems, drive shafts, and fasteners.
- Energy and Environmental Protection: Employed in solar panels, energy systems, and wastewater treatment facilities.
