مورد أنابيب الفولاذ المقاوم للصدأ Wenzhou Kaixin الصين
What is stainless steel 347?
الفولاذ المقاوم للصدأ 347 is similar to the 321 stainless steels in that it is often used as a stabilized alternative to Type 304. In the case of 347, however, the stabilizing agent is columbium. This metal intensifies 347’s already present ability to withstand intergranular corrosion for maximum capabilities. Additionally, the columbium allows for 347 to undergo repeated heating in temperatures up to 1650° F. نتيجة ل, the metal is commonly applied to high temperature equipment, such as gaskets and expansion joints, along with rocket engine and chemical manufacturing.
In addition to its heat resistance properties, 347 also enjoys better resistance against creep and stress rupture corrosions. This is another advantage of type 304, as 347’s characteristics may be better suited for environments where stabilization is a primary concern.
Type 347 is known for being workable under all common welding techniques, along with hot and cold working. However, when being heat treated the metal must be heated up in the range of 2100 to 2250°F. This is due to 347’s inability to work harden under heat treatment. Cold reduction is the only method that will utilize the alloy’s elevated properties.
347 الفولاذ المقاوم للصدأ 1.4550 نموذج المنتجات النهائية
- دائري, مربع, سداسي الزوايا & قضبان مسطحة
- سلس / مواسير ملحومة
- سلس / الأنابيب الملحومة
- حار & أطباق مدرفلة على البارد & أوراق
- قضبان مزورة
- مواسير بوتويلد
- تركيبات مزورة
- تركيبات ضغط الطويق
- الشفاه المزورة
- الصمامات
- قياسات
Applications for 347 الفولاذ المقاوم للصدأ
Collector rings, airplane exhaust stacks, annealing box covers, jet engine parts.expansion joints, tubing, fasteners, flexible metal hose and bellows
هquivalents of grade 347
| الاتحاد الأوروبي في | الولايات المتحدة الأمريكية – | فرنسا أفنور | إنكلترا بكالوريوس | السويد SS | روسيا GOST |
| X6CrNiNb18-10 | 347 | Z6CNNb18-10 | 347S31 | 2338 | 08KH18N12B |
تعبير ranges for 347 grade of stainless steel
| درجة | في | مينيسوتا | ص | ج | س | و | سجل تجاري | OTHER | ن | |
| 347 | دقيقة. | 9.00 | - | - | - | - | - | 17.0 | Nb=10(ج+ن) | - |
| الأعلى. | 13.00 | 2.00 | 0.045 | 0.08 | 0.030 | 1.00 | 20.0 | 1.0 | ||
الخصائص الميكانيكية
| درجة | قوة الشد (الآلام والكروب الذهنية) دقيقة | استطالة (% في 50 ملم) دقيقة | قوة الغلة 0.2% دليل (الآلام والكروب الذهنية) دقيقة | صلابة | |
| روكويل ب (الموارد البشرية ب) الأعلى | برينل (HB) الأعلى | ||||
| 347 | 515 | 40 | 205 | 92 | 201 |
الخصائص الفيزيائية
| درجة | كثافة (kg/m3) | Elastic Modulus (المعدل التراكمي) | Mean Coefficient of Thermal Expansion (m/m/0C) | توصيل حراري (W/m.K) | Specific Heat 0-1000C (J/kg.K) | المقاومة الكهربائية (n.m) | |||
| 0-1000ج | 0-3150ج | 0-5380ج | at 1000C | at 5000C | |||||
| 347 | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
المقاومة للتآكل
- Pitting corrosion-resistant steel
- Steel resistant to rural and non-industrial urban atmosphere
- Stainless steel less aggressive sea atmosphere
- Steel resistant to salt of nitric acid and nitric acid at concentrations of up to 55% and temperatures up to 80 درجة مئوية
- Steel resistant to non-oxidizing environments, e.g. H2SO4, HCl, HF, etc.
- Steel resistant to stress corrosion in solutions of chlorides and hydroxides
- Steel resistant to pitting and contact corrosion in environments containing halides
المعالجة الحرارية
Annealing temperature range is 1800 to 2000°F
May be stress relief annealed within the carbide precipitation range of 800 to 1500°F without any danger of subsequent intergranualr corrosion
Cannot be hardened by heat treatment
WELDABILITY
Austenitic stainless steels are considered to be the most weldable out of all high alloy steels
Can be welded by all fusion and resistance welding processes