Hastelloy C-276 (UNS N10276) lapped joint flanges are fabricated from a nickel–molybdenum–chromium alloy engineered for exceptional resistance to both reducing and oxidizing environments and to localized forms of attack such as pitting and crevice corrosion. The alloy’s balanced chemistry (high nickel with substantial molybdenum and chromium, low carbon and controlled impurity levels) gives C-276 outstanding corrosion resistance in chloride-bearing media, wet chlorine, oxidizing acids and mixed acid environments — making it a standard choice for chemical processing, pollution control, and offshore/energy applications where aggressive chemistries are present.
Synergy Engineering Solution manufactures, stocks, and exports Hastelloy C-276 lapped joint flanges using controlled forging and precision machining workflows to ensure full dimensional and metallurgical integrity. Production typically involves forging to appropriate flange blanks, finish-machining of the face and bore to standard flange dimensions, and careful inspection and testing (visual, dimensional, and where required, NDT). Synergy emphasizes traceability and can supply material test reports (MTRs), chemical and mechanical test certificates, and third-party inspection when requested by project or regulatory requirements.
In service, C-276 lapped joint flanges provide both corrosion performance and ease of installation: the lapped joint (loose) flange design allows for easier alignment in piping systems and is useful where frequent rotation or repositioning of the flange is required. The combination of alloy performance and the lapped joint geometry makes these flanges particularly attractive in piping systems connected to lined equipment, specialist valves, and in skid packages where assembly and orientation flexibility is important.
Synergy positions itself as a global stockist and exporter, serving markets across the Middle East (Oman, Qatar, Saudi Arabia, UAE, Kuwait), Europe (Spain, Germany), North America (USA, Canada) and multiple regions in Africa and beyond. Their inventory approach is designed to support both one-off emergency orders and regular project deliveries — offering small-quantity availability from stock as well as planned bulk shipments for EPC and fabricator clients. They also handle logistics, export documentation, and customs facilitation to simplify cross-border procurement.
Typical end-use industries for Hastelloy C-276 lapped joint flanges supplied by Synergy include chemical processing, chlor-alkali, pulp & paper, pollution control (flue gas desulfurization), offshore systems, power generation, and specialty process skids. Buyers looking for long service life in corrosive or mixed-acid environments choose C-276 because it reduces downtime and maintenance costs relative to many alternative materials. For procurement, Synergy can provide technical support on flange selection, dimensioning to meet ASME/EN standards, lead-time options, and certification packages to match project specifications.
With a robust global logistics network, Synergy Engineering Solutions is capable of delivering these high-performance flanges efficiently to any region worldwide. Their dedication to quality, timely delivery, and customer satisfaction positions them as a leading supplier of Inconel 800 Lapped Joint Flanges for industries that demand superior corrosion resistance, high temperature strength, and operational reliability.
| Standard | ASME B16.5, ANSI B16.47, MSS SP-44, DIN, EN, BS, GOST, JIS |
|---|---|
| Size Range | ½” to 48” (DN15 to DN1200) |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Facing | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
| Form | Lapped Joint Flanges |
| Material Grade | UNS N10276 / Hastelloy C276 |
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance (57.0 min) |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Chromium (Cr) | 14.5 – 16.5 |
| Iron (Fe) | 4.0 – 7.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Cobalt (Co) | 2.5 max |
| Manganese (Mn) | 1.0 max |
| Carbon (C) | 0.01 max |
| Silicon (Si) | 0.08 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
| Property | Value |
|---|---|
| Tensile Strength | 785 MPa (min) |
| Yield Strength (0.2% Offset) | 355 MPa (min) |
| Elongation | 40% (min) |
| Hardness | 95 HRB (max) |
| Standard | Equivalent Grade |
|---|---|
| UNS | N10276 |
| W.Nr. | 2.4819 |
| Alloy Name | Hastelloy C-276 |
| EN | NiMo16Cr15W |
| BS | NA 45 |
Hastelloy C276 has high nickel, molybdenum, and chromium content, providing outstanding resistance to strong oxidizers, reducing agents, and chloride-induced corrosion.
They are widely used in chemical processing plants, marine environments, pollution control, pulp & paper, and offshore industries due to their superior corrosion resistance.
Lapped joint flanges allow easy alignment during installation and are suitable for systems requiring frequent dismantling or re-positioning.
Yes, Synergy Engineering Solution exports Hastelloy C276 flanges to Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada, Africa, and worldwide markets.
In order to alter the physical and mechanical characteristics of metal without altering its original shape and size, we offer a variety of heat treatment services, including hydrogen heat treatment, HIC testing, blasting and painting, cutting, arc welding, epoxy cutting, PMI testing, hydro testing, NACE testing, and SSC testing. Although heat treatment is frequently linked to a metal's increased strength, it can also be used to change specific manufacturability goals, such enhancing machinability, formability, ductility, etc. The metal and heavy manufacturing sectors use our services. Customers have expressed great pleasure with our services' precision, efficacy, cost, and prompt delivery.
Exporting Steel Pipes & Tubes to over 60 countries including Afghanistan, Albania, Andorra, Angloa, Austria, Australia, Bahrain, Bangladesh, Bhutan, Brazil, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Canada, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Madagascar, Mexico, Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, New Zealand, North Korea, Netherlands, Norway, Nigeria, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Sudan, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Venezuela, Vietnam, Yemen, etc.

