説明
Nickel-chromium-molybdenum alloy fitting
ハステロイ C276 突合せ溶接式パイプキャップ
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, その間 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, 集中, temperature and contaminants.
C276 butt weld pipe cap specifications
| 製品 | Nickel-alloy butt weld pipe cap / end cap |
|---|---|
| ASTM材質 | ASTM B366/B366M, ordered C276 grade and class |
| 材質の指定 | UNS N10276; EN 2.4819 / NiMo16Cr15W |
| 寸法規格 | ASME B16.9 for WP fitting classes; MSS SP-43 for CR class when ordered |
| 呼び径 | NPS 1/2–48 / DN15–DN1200, subject to alloy availability and forming route |
| 肉厚 | Sch 5S–Sch 160, XXS and project-specific wall, subject to review |
| 工事 / クラス | Seamless or welded; ASTM B366 WP/CR class designation stated on the order |
| 終了準備 | Butt-weld bevel end (BE) matched to connecting pipe and WPS |
| Condition | Solution heat treated and descaled/cleaned to the ordered specification |
| ドキュメント | 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, 公差, 評価, testing and marking. Material acceptance follows the ordered ASTM specification. Availability at NPS 1/2–48 and heavy walls is subject to alloy, サイズ, 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
| 選定のポイント | C276 / N10276 | 合金 625 / N06625 |
|---|---|---|
| Alloy focus | High molybdenum with tungsten for broad chemical resistance | Ni-Cr-Mo-Nb alloy combining strength and corrosion resistance |
| Typical advantage | 混合酸, reducing media and pollution-control chemicals | 海水, オフショア, fatigue and elevated-temperature strength |
| 製作 | Excellent welded corrosion behavior with qualified procedure | Strong weldability; procedure must control heat input and cleanliness |
| 選択ルール | Choose from actual chemical service data | Choose when strength plus marine/process resistance is needed |
代表的な用途
| 業界 | 代表的なサービス | Selection reason |
|---|---|---|
| 化学処理 | リアクター, transfer lines and mixed-acid systems | Broad resistance in many aggressive chemicals |
| 公害防止 | FGD, wet scrubbers and waste-treatment piping | Resistance to acidic chlorides and variable contaminants |
| 医薬品 / fine chemical | High-purity aggressive reagent service | Corrosion resistance plus welded-system integrity |
| パルプと紙 | 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, 温度, プレッシャー, weld procedure and applicable code requirements.
製造業, inspection and EN 10204 ドキュメント
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.
外径, 全長, 壁の厚さ, ovality and BE geometry checked.
PT, ユタ州, RT, surface condition or third-party witnessing arranged when ordered.
見積依頼チェックリスト
- ASTM grade and UNS number
- ASME B16.9 or MSS SP-43 edition
- NPS or DN size
- Schedule or exact wall thickness
- シームレスまたは溶接構造/クラス
- BE bevel detail and matching pipe
- Quantity and delivery destination
- EN 10204 3.1, PMI, 寸法および臨死体験の要件
よくある質問
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?
はい, サイズに応じて, wall and ordered ASTM B366 クラス. 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 は視覚的に他のニッケル合金に似ています. 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, サイズ, 壁, ベベル, quantity and inspection plan for technical review.
