ASTM B564 UNS N06625 Flanges: درجة 1 vs Grade 2
إجابة سريعة: ASTM B564 يغطي المطروقات من سبائك النيكل, مشتمل UNS N06625 الشفاه, but it recognizes two heat-treatment conditions. درجة 1 is annealed and is normally employed up to 1100°F (593درجة مئوية). درجة 2 is solution annealed and is normally employed above 1100°F where resistance to creep and rupture is required. These are specification conditions—not universal design limits. The purchase order must also define the flange standard, مقاس, فصل, تواجه, bore and testing.
Buyers often write only “ASTM B564 UNS N06625 flange.” That identifies the material route, but it does not fully define the required item. درجة 1 versus Grade 2 affects heat-treatment condition and intended temperature regime, بينما ASME B16.5 or another dimensional standard controls a different part of the order.
What ASTM B564 Covers
ASTM B564 is a material specification for nickel-alloy forgings. ل UNS N06625, it sets requirements associated with chemistry, المعالجة الحرارية, mechanical properties and testing. لا, في حد ذاته, define every flange dimension or pressure-temperature rating.
Keep the standards separate: ASTM B564 answers “what forged material and condition?” A dimensional standard such as ASME B16.5 answers “what flange dimensions, التسامح, marking and pressure-temperature framework?” The project specification and purchase order connect both.
ASTM B564 درجة 1 vs Grade 2
| يفحص | درجة 1 | درجة 2 |
|---|---|---|
| حالة | صلب | صلب الحل |
| ASTM service note | Normally employed up to 1100°F (593درجة مئوية) | Normally employed above 1100°F (593درجة مئوية) where creep and rupture resistance are required |
| Buyer action | درجة الدولة 1 and verify the required condition on the MTC | درجة الدولة 2 and verify the solution-annealed condition and project requirements |
| الاستبدال | Do not substitute one grade for the other without engineering and purchasing approval. | |
The 1100°F boundary is not permission to select a flange from temperature alone. ضغط التصميم, applicable code rules, بيئة التآكل, fabrication history, mating components and project-specific acceptance criteria still need review. Hot working or subsequent reannealing can also affect properties, so the delivered condition and traceability matter.
ASTM B564 مقابل ASME B16.5
ASTM B564 و ASME B16.5 are complementary, not competing specifications. A usable order may identify ASTM B564 UNS N06625 درجة 1 أو الصف 2 for the forged material, ثم ASME B16.5 for the applicable flange size, فصل, أبعاد, التسامح, marking and testing framework.
“Alloy 625 flange” is therefore incomplete. Buyers should add flange type, NPS أو DN, الطبقة أو PN, تواجه, تتحمل أو مطابقة جدول الأنابيب, معيار الأبعاد والطبعة. Pressure class is not a material grade, والصف 1 أو الصف 2 is not a pressure rating.
What to Check on the MTC
The MTC should be checked against the purchase order and the adopted specification edition. على الأقل, review:
- الهوية المادية: ASTM B564, UNS N06625 and the ordered Grade 1 أو الصف 2 حالة.
- إمكانية التتبع: heat or lot reference connected to the flange marking and item documentation.
- المعالجة الحرارية: the reported condition and any required temperature record or statement.
- Chemistry and mechanical results: actual reported values assessed against the governing edition and purchase order.
- Required tests: only the examinations, supplementary requirements and acceptance criteria actually invoked by the order.
- Certification scope: document type, manufacturer identity, inspector or third-party endorsement when contractually required.
Producer datasheets are useful for typical alloy behaviour, but typical values are not acceptance limits for a purchase order. Acceptance should follow the cited material specification, dimensional standard and project requirements.
RFQ Checklist for UNS N06625 الشفاه
| RFQ field | Information to state |
|---|---|
| مادة | ASTM B564 UNS N06625, درجة 1 أو الصف 2, with edition if controlled by the project |
| تعريف شفة | يكتب, مصادر القدرة النووية/DN, class/PN, تواجه, تتحمل أو الأنابيب الجدول الزمني, ومعيار الأبعاد |
| Service | Design and operating temperature/pressure, process medium and relevant upset or cleaning conditions |
| Quality plan | نوع إم تي سي, تجربة الاقتراب من الموت, مؤشر مديري المشتريات, صلابة, supplementary requirements and third-party inspection when required |
| Commercial details | كمية, وجهة, التعبئة, requested delivery and approved manufacturer restrictions |
الأسئلة المتداولة
يكون ASTM B564 نفس Inconel 625?
لا. ASTM B564 is a product/material specification. UNS N06625 is the alloy designation commonly associated with Alloy 625; Inconel is a trademark. A controlled order should cite the applicable specification, رقم يو إن إس, grade or condition and product details.
يفعل ASTM B564 define flange pressure class?
لا. درجة 1 والصف 2 describe material conditions. Pressure class belongs to the applicable flange standard and must be evaluated with temperature, material grouping and code requirements.
يمكن الصف 2 replace Grade 1?
ليس تلقائيا. Even if Grade 2 is solution annealed, substitution can affect the approved specification, design review, documentation and commercial scope. Obtain formal approval first.
Which standard applies to Alloy 625 الشفاه?
ASTM B564 يستخدم عادة ل UNS N06625 forged flange material. The flange also needs an applicable dimensional standard such as ASME B16.5, or another project-specified standard for its size and type.
Primary References
- ASTM B564-25 specification page — scope and Grade 1/Grade 2 service notes.
- ASME B16.5-2025 ملخص — flange ratings, أبعاد, التسامح, marking and testing scope.
- معادن خاصة: سبيكة INCONEL 625 نشرة — typical alloy data; not a substitute for specification acceptance limits.
طلب سبيكة 625 Flange Review
أرسل الدرجة المطلوبة, نوع شفة, مقاس, فصل, تواجه, تتحمل, كمية, شروط الخدمة, dimensional standard and inspection requirements. SASAFLANGE can review the item list and identify missing details before quotation.
