説明
A-286 precipitation-hardening high-temperature bolting
ASTM A453 学年 660 A-286 スタッドボルト クラス A ～ D
ASTM A453 学年 660 A-286 stud bolts and matching bolting components supplied in the exact Class A, B, C or D condition required by the pressure-equipment or valve-flange specification.
簡単な回答
ASTM A453 学年 660 is an A-286 nickel-iron-chromium precipitation-hardening alloy bolting grade for high-temperature service. ASTM A453 covers Classes A, B, C and D; the purchase order must identify the exact class because heat-treatment and mechanical-property requirements differ.
製品の概要
とは何ですか ASTM A453 学年 660 スタッドボルト?
ASTM A453 学年 660 bolting is manufactured from the precipitation-hardening alloy commonly known as A-286, with UNS designation S66286. The alloy is used where high-temperature strength, oxidation resistance and an expansion coefficient closer to austenitic stainless steels are important to joint design.
ASTM A453 covers studs, スタッドボルト, nuts and other bolting forms for high-temperature service. 学年 660 is divided into Classes A, B, C and D. Because class affects the ordered material condition and properties, a quotation that says only “A-286 stud bolts” or “Grade 660” is incomplete for procurement.
ASTM A453 学年 660 stud bolt specifications
| 材料 | A-286 nickel-iron-chromium precipitation-hardening alloy |
|---|---|
| 米国の指定 | UNS S66286 |
| Grade and classes | ASTM A453/A453M 学年 660 Classes A, B, C or D |
| 構成 | 全ねじスタッドボルト, double-end stud and matching bolting components as specified |
| スレッド | UNC, UNF, 8国連またはプロジェクト指定のシリーズおよびクラス ASME B1.1 |
| 寸法 | ASME B18.31.2, equipment bolting schedule or approved drawing |
| マッチするナット | 学年 660 nuts or other compatible bolting specified by the design |
| ドキュメント | MTC, クラス, 熱処理, 機械的試験, 硬度, PMI and dimensions |
最終寸法, 熱処理, class or grade properties, コーティング, testing and acceptance criteria follow the purchase order and contractually required standard edition.
ASTM A453 学年 660 Class A, B, C and D
ASTM A453 defines four Grade 660 クラス. The class is part of the material designation and controls the applicable heat-treatment and mechanical-property requirements. The classes are not interchangeable by default.
| クラス | Order designation | Procurement instruction |
|---|---|---|
| Class A | ASTM A453/A453M 学年 660 Class A | Order only when Class A is stated by the design; verify the Class A heat-treatment and property table in the required edition. |
| Class B | ASTM A453/A453M 学年 660 Class B | Order only when Class B is stated by the design; do not substitute Class A, C or D without written approval. |
| Class C | ASTM A453/A453M 学年 660 Class C | Order only when Class C is stated by the design; confirm diameter-dependent properties and processing requirements. |
| Class D | ASTM A453/A453M 学年 660 Class D | Order only when Class D is stated by the design; record the complete Grade 660 Class D designation on the PO and MTC. |
Use the mechanical-property and heat-treatment tables in the contractually required ASTM edition. Do not infer a class from appearance, stock description or trade name.
このグレードを指定する理由?
Specify Grade 660 when the approved design needs A-286 high-temperature bolting with strength, oxidation resistance and thermal-expansion behaviour suited to austenitic stainless pressure components. Select the class from the engineering specification, not from stock availability.
エンジニアリングに関する重要なメモ
A-286 is a trade description, その間 ASTM A453 学年 660 Class A, B, C or D is a procurement designation. Neither the alloy name nor a generic tensile value establishes full compliance. Confirm class, diameter, 熱処理, テスト, nut condition and design temperature.
スタッド, ナットと仕上げのオプション
代表的な用途
品質, 検査と文書化
学年 660 orders are reviewed by exact class before material commitment. Certificates identify the ASTM grade and class, alloy heat, processing condition, test results and finished-product traceability.
- EN 10204 3.1 注文時の材料試験証明書
- Heat-number and batch traceability from raw material to finished stud
- Chemical composition and mechanical-property records
- Heat-treatment record and hardness test results
- 寸法検査と校正済みねじゲージ
- PMI when specified for chromium or A-286 alloy identification
- 表面, coating or passivation inspection as applicable
- 第三者による検査, 契約に基づくマーキングと輸出梱包
お見積りに必要な情報
- ASTM規格, exact grade or class and required edition
- スタッド径, 全長, スレッドシリーズとスレッドクラス
- 適合ナット仕様, grade or class, style and quantity
- Design and operating temperatures plus any cyclic or upset conditions
- 無地, passivated, coated or plated finish and approved process
- MTC, PMI, 硬度, 引張, コーティングおよび第三者検査の要件
- Applicable piping code, equipment specification and owner supplements
- 量, delivery destination, 梱包方法と必要なスケジュール
よくある質問
とは何ですか ASTM A453 学年 660?
学年 660 is an A-286 nickel-iron-chromium precipitation-hardening alloy bolting grade under ASTM A453/A453M for high-temperature service.
What is the difference between Grade 660 Classes A, B, C and D?
The classes have distinct ASTM heat-treatment and mechanical-property requirements. They are separate procurement conditions and should not be interchanged without engineering approval.
Is A-286 the same as ASTM A453 学年 660?
A-286 identifies the alloy family. A complete ASTM order also identifies Grade 660, the exact class, 製品形態, 寸法, tests and required standard edition.
Can matching Grade 660 nuts be supplied?
はい. State whether nuts are required, their exact grade or class, 寸法, 量, 表面状態, testing and marking in the inquiry.
スタッドボルト関連商品
Reference standard
Material and class requirements are controlled by ASTM A453/A453M. ねじの形状とスタッドの寸法を参照してください。 ASME B1.1 そして ASME B18.31.2. State the contractually required edition in the purchase order and review all supplementary project requirements.
技術的な見積もりをリクエストする
Send the grade or class, bolting schedule, nut requirement, サービス条件, inspection plan and delivery destination for technical review.
