Finding a dependable Hastelloy C276 pipe supplier is critical for projects requiring maximum resistance to aggressive chemical environments. We supply ASTM B622 / ASME SB-622 Hastelloy C276 seamless and welded pipes (UNS N10276) to chemical plants, pharmaceutical manufacturers, and pollution control equipment builders globally, with full EN 10204 3.1 certification and VIM+ESR refined starting material.
Hastelloy C276 is a nickel-molybdenum-chromium alloy with tungsten addition, widely regarded as one of the most corrosion-resistant wrought nickel alloys available. Its chemical composition per ASTM B622:
Hastelloy C276 is specified in applications where 316L stainless steel, duplex stainless steel, and even standard镍基合金 fail prematurely:
| Parameter | Specification |
|---|---|
| Standard | ASTM B622 / ASME SB-622 / DIN 17751 |
| UNS Number | N10276 |
| Outer Diameter (OD) | 6.0mm to 168.3mm (1/8" to 6" NPS) |
| Wall Thickness (WT) | 0.5mm to 14mm (SCH 10S to SCH 160) |
| Length | Single random / double random / fixed length (max 12m) |
| Pipe Type | Seamless (SMLS) and welded (EW) available |
| Surface | Pickled & passivated, inner/outer surface Ra ≤ 0.8μm |
| Ends | Plain end (PE), beveled end (BE), threaded (TBE) available |
As of 2026, Hastelloy C276 seamless pipe (ASTM B622, NPS 1–2") from Chinese mills ranges USD 75–130/kg for standard mill lengths, depending on wall thickness and order quantity. Welded pipe (ASTM B619, NACE compliant) is USD 60–95/kg. Ultra-low carbon C276L commands a 15–20% premium. Exact pricing requires OD, WT, and quantity.
C276 has higher molybdenum (15–17% vs 12.5–14.5% in C22) giving superior reducing-acid performance but slightly lower oxidizing-media resistance. C22 (Cr 20–22.5%) offers better oxidizing environments. For mixed acid service with strong oxidizing chlorides, C22 is often preferred. Both are NACE MR0175 compliant. Our technical team can advise the optimal grade for your specific介质.
Yes. C276 welds readily with GTAW (TIG), GMAW (MIG), and SMAW (stick) processes. No post-weld heat treatment is required due to ultra-low carbon content. We provide WPQR-qualified welders and can fabricate custom pipe spools with radiography (RT) or ultrasonic (UT) weld examination per ASME Section IX.
We routinely arrange SGS, Bureau Veritas (BV), Lloyd's Register, DNV, or customer-designated inspection agencies. Standard inspection scope includes: dimensional verification, visual & surface inspection, PMI (positive material identification), and review of mill test certificates. Additional mechanical or corrosion testing can be added upon request.
Stocked sizes (NPS 1/2" to 2", SCH 10S) typically ship within 5–8 working days. Non-stock sizes require 15–30 working days for mill production. For urgent deliveries, we maintain a small reserve stock for fast-track orders. Airfreight from Shanghai/Pudong airport can deliver globally within 5–8 days for critical shut-down needs.