Tanım
Nickel-chromium-molybdenum alloy fitting
Hastelloy C276 Alın Kaynaklı Boru Kapağı
A highly corrosion-resistant nickel-alloy closure for chemical processing, pollution control and mixed-acid piping.
What is a Hastelloy C276 butt weld pipe cap?
A C276 butt weld pipe cap is a factory-made wrought nickel-alloy fitting used to close the end of a pressure piping run. ASTM B366/B366M covers factory-made wrought nickel and nickel-alloy fittings, sırasında ASME B16.9 or MSS SP-43 supplies the ordered dimensional basis.
UNS N10276 is a nickel-chromium-molybdenum alloy with tungsten and very low carbon and silicon. It is valued for resistance across a broad range of reducing and oxidizing chemical environments and for maintaining corrosion resistance in welded fabrication. Suitability still depends on chemical composition, konsantrasyon, temperature and contaminants.
C276 butt weld pipe cap specifications
| Ürün | Nickel-alloy butt weld pipe cap / end cap |
|---|---|
| ASTM malzemesi | ASTM B366/B366M, ordered C276 grade and class |
| Malzeme tanımları | UNS N10276; EN 2.4819 / NiMo16Cr15W |
| Boyutsal standartlar | ASME B16.9 for WP fitting classes; MSS SP-43 for CR class when ordered |
| Nominal boyut | NPS 1/2–48 / DN15–DN1200, subject to alloy availability and forming route |
| Duvar kalınlığı | Sch 5S–Sch 160, XXS and project-specific wall, subject to review |
| Yapı / sınıf | Seamless or welded; ASTM B366 WP/CR class designation stated on the order |
| Hazırlığı sonlandır | Butt-weld bevel end (BE) matched to connecting pipe and WPS |
| Durum | Solution heat treated and descaled/cleaned to the ordered specification |
| Dokümantasyon | EN 10204 3.1 MTC, PMI, dimensions and class-related NDE records as ordered |
ASME B16.9 covers factory-made wrought butt-welding fitting dimensions, toleranslar, derecelendirmeler, testing and marking. Material acceptance follows the ordered ASTM specification. Availability at NPS 1/2–48 and heavy walls is subject to alloy, boyut, quantity and manufacturing route.
ASME B16.9 and MSS SP-43 supply options
ASME B16.9
ASTM B366 WP fitting classes use ASME B16.9 dimensional and rating requirements. State seamless/welded class and the required NDE extent.
MSS SP-43
ASTM B366 CR-class fittings use MSS SP-43 dimensions where specified. Confirm the piping design permits this lower-pressure corrosion-resistant fitting basis.
Hastelloy C276 vs Inconel 625 pipe cap
| Seçim noktası | C276 / N10276 | Alaşım 625 / N06625 |
|---|---|---|
| Alloy focus | High molybdenum with tungsten for broad chemical resistance | Ni-Cr-Mo-Nb alloy combining strength and corrosion resistance |
| Typical advantage | Mixed acids, reducing media and pollution-control chemicals | Deniz suyu, açık deniz, fatigue and elevated-temperature strength |
| imalat | Excellent welded corrosion behavior with qualified procedure | Strong weldability; procedure must control heat input and cleanliness |
| Seçim kuralı | Choose from actual chemical service data | Choose when strength plus marine/process resistance is needed |
Tipik uygulamalar
| Endüstri | Tipik hizmet | Selection reason |
|---|---|---|
| Kimyasal işleme | Reaktörler, transfer lines and mixed-acid systems | Broad resistance in many aggressive chemicals |
| Kirlilik kontrolü | OGG, wet scrubbers and waste-treatment piping | Resistance to acidic chlorides and variable contaminants |
| İlaç / fine chemical | High-purity aggressive reagent service | Corrosion resistance plus welded-system integrity |
| Kağıt hamuru ve kağıt | Bleaching and chlorine-related process systems | Useful resistance in selected wet chlorine and chloride media |
Application examples are not a design approval. The piping materials engineer must confirm corrosion compatibility, sıcaklık, basınç, weld procedure and applicable code requirements.
Üretme, inspection and EN 10204 dokümantasyon
C276 caps require controlled raw material, forming, solution heat treatment and clean fabrication. ASTM B366 class determines construction and NDE expectations, so the complete class designation must be agreed before manufacture.
Material certificate and heat-number traceability matched to the ordered grade.
PMI verifies key alloying elements when specified in the inspection plan.
Dış çap, toplam uzunluk, duvar kalınlığı, ovality and BE geometry checked.
PT, UT, RT, surface condition or third-party witnessing arranged when ordered.
Teklif talebi kontrol listesi
- ASTM grade and UNS number
- ASME B16.9 or MSS SP-43 edition
- NPS or DN size
- Schedule or exact wall thickness
- Dikişsiz veya kaynaklı yapı/sınıf
- BE bevel detail and matching pipe
- Quantity and delivery destination
- EN 10204 3.1, PMI, boyut ve NDE gereksinimleri
Sık sorulan sorular
Which ASTM standard covers C276 pipe caps?
ASTM B366/B366M covers factory-made wrought nickel and nickel-alloy fittings, including caps. The order must identify the C276 grade, WP or CR class and dimensional standard.
What are the UNS and EN designations?
Hastelloy C276 is UNS N10276 and is commonly cross-referenced as EN 2.4819 / NiMo16Cr15W.
What is the difference between WP and CR classes?
WP classes relate to ASME B16.9, B16.11 or B16.28 requirements and specify construction/NDE class. CR classes relate to MSS SP-43 corrosion-resistant fittings.
Can C276 caps be supplied seamless or welded?
Evet, boyutuna bağlı olarak, wall and ordered ASTM B366 sınıf. The class designation and NDE extent should be stated rather than using only the word seamless or welded.
Why is PMI important for C276?
C276 resembles other nickel alloys visually. PMI verifies key alloying elements and supports traceability before a high-value component enters fabrication.
Request a C276 butt weld cap quotation
Provide the ASTM B366 grade/class, boyut, duvar, eğim, quantity and inspection plan for technical review.
