Beschreibung
Five-percent-chromium high-temperature bolting
ASTM A193 B5 High Temperature Stud Bolts
ASTM A193 Grade B5 fully threaded alloy-steel stud bolts supplied to the required dimensions, threads and finish, with compatible heavy hex nuts and traceable documentation.
Schnelle Antwort
ASTM A193 Grade B5 is a heat-treated chromium-molybdenum alloy-steel bolting grade containing substantially more chromium than B7. It is used when a piping or equipment specification requires B5 for high-temperature or special-purpose flange bolting.
Produkt auf einen Blick
Was sind ASTM A193 B5 stud bolts?
ASTM A193 B5 stud bolts are high-temperature alloy-steel fasteners made to a chromium-molybdenum grade commonly described as five-percent-chromium bolting. The increased chromium content differentiates B5 from the more common B7 grade and aligns it with specific high-temperature piping and equipment material systems.
B5 identifies the bolting material and heat-treatment requirements; it does not define the flange, Drehmoment, overall stud length or service limit. A complete order states the ASTM edition, Durchmesser, Thread-Serie, Länge, compatible nut grade, Oberflächenzustand, testing and project inspection requirements.
ASTM A193 B5 stud bolt specifications
| Material | Chromium-molybdenum alloy steel, commonly described as 5% Cr |
|---|---|
| Wärmebehandlung | Heat treated to ASTM A193/A193M Grade B5 |
| Konfiguration | Fully threaded flange stud; double-end configuration by drawing |
| Themen | UNC, 8UN- oder projektspezifische Serie und Klasse ASME B1.1 |
| Abmessungen | ASME B18.31.2, Flanschverschraubungsplan oder genehmigte Zeichnung |
| Passende Nüsse | ASTM A194/A194M Grad 3 when specified and compatible |
| Finish-Optionen | Schmucklos, black or project-approved high-temperature coating |
| Dokumentation | MTC, Wärmebehandlung, mechanische Tests, Härte, PMI and dimensions as ordered |
Endgültige Abmessungen, Wärmebehandlung, class or grade properties, Beschichtung, testing and acceptance criteria follow the purchase order and contractually required standard edition.
Warum diese Note angeben??
Specify B5 when the approved piping material class or equipment datasheet explicitly calls for this chromium-molybdenum bolting grade. It is especially relevant when the adjoining pressure components use compatible chromium-alloy material systems and high-temperature performance is required.
Kritischer technischer Hinweis
Do not substitute B7, B6 or B16 for B5 based on strength alone. Chemie, zulässiger Stress, oxidation behaviour, nut compatibility, coating temperature and the governing code must be reviewed for the actual joint.
Zucht, Nuss- und Finish-Optionen
Typische Anwendungen
Qualität, Inspektion und Dokumentation
B5 orders can be controlled with PMI and heat-number traceability so the chromium-alloy grade remains identifiable through cutting, threading, heat treatment and final inspection.
- EN 10204 3.1 Materialprüfzeugnis bei Bestellung
- Heat-number and batch traceability from raw material to finished stud
- Chemical composition and mechanical-property records
- Heat-treatment record and hardness test results
- Maßkontrolle und kalibrierte Gewindemessung
- PMI when specified for chromium or A-286 alloy identification
- Oberfläche, coating or passivation inspection as applicable
- Inspektion durch Dritte, Kennzeichnung und Exportverpackung nach Vereinbarung
Für ein Angebot erforderliche Informationen
- ASTM-Standard, exact grade or class and required edition
- Bolzendurchmesser, Gesamtlänge, Thread-Serie und Thread-Klasse
- Passende Mutternspezifikation, grade or class, style and quantity
- Design and operating temperatures plus any cyclic or upset conditions
- Schmucklos, passiviert, coated or plated finish and approved process
- MTC, PMI, Härte, zugfest, Beschichtungs- und Inspektionsanforderungen durch Dritte
- Applicable piping code, equipment specification and owner supplements
- Menge, Lieferziel, Verpackungsmethode und erforderlicher Zeitplan
Häufig gestellte Fragen
What material is ASTM A193 B5?
B5 is a heat-treated chromium-molybdenum alloy-steel bolting grade commonly described as containing approximately five percent chromium.
Which nuts are commonly used with B5 stud bolts?
ASTM A194 Grad 3 Üblicherweise werden schwere Sechskantmuttern verwendet. The project must confirm nut grade, Abmessungen, finish and temperature compatibility.
Is B5 interchangeable with B7 or B16?
No automatic interchangeability should be assumed. The grades differ in chemistry and high-temperature characteristics, and substitution requires engineering and purchaser approval.
Can B5 stud bolts be PMI tested?
Ja. PMI can be specified to verify alloy identity, with the method, sampling frequency, acceptance criteria and reporting stated in the inspection plan.
Verwandte Stehbolzenprodukte
Reference standard
Material and class requirements are controlled by ASTM A193/A193M. Gewindeform und Bolzenabmessungen können als Referenz dienen ASME B1.1 Und ASME B18.31.2. State the contractually required edition in the purchase order and review all supplementary project requirements.
Fordern Sie ein technisches Angebot an
Send the grade or class, bolting schedule, nut requirement, Servicebedingungen, inspection plan and delivery destination for technical review.
