Emily PIPE offers high-quality Alloy 800/800H bars (UNS N08800/N08810), the global workhorse nickel-iron-chromium alloys for high-temperature chemical processing. Our bars deliver an unbeatable combination of exceptional creep resistance, oxidation/carburization protection and chloride SCC immunity, making them the industry standard for continuous service up to 900°C in aggressive petrochemical and chemical environments.
As a leading China-based nickel alloy manufacturer with over 20 years of experience, we supply precision-manufactured Alloy 800/800H bars fully certified to ASTM B408, ASME SB408 and NACE standards. From ethylene cracking furnaces to ammonia reformers and sulfur recovery units, our bars provide reliable performance that meets the demanding safety and productivity requirements of the global chemical industry.
| Item | Details |
|---|---|
| Executive Standards | 1. Bar/Rod Standards: ASTM B408, ASME SB408, EN 10095
2. Forging Standards: ASTM B564, ASME SB564 3. Pressure Vessel Standards: ASME Section I, ASME Section VIII Div.1 4. Testing Standards: ASTM E8, ASTM E139 (Creep), ASTM G31 (Corrosion) 5. Quality Management Standards: ISO 9001, ISO 14001 |
| Material Grades | 1. Alloy 800 (UNS N08800): W.Nr.1.4876, general-purpose high-temperature grade
2. Alloy 800H (UNS N08810): W.Nr.1.4958, controlled carbon and grain size for superior creep resistance 3. Dual-Certified Grade: Meets both Alloy 800 and 800H specifications for maximum flexibility 4. Equivalent Grades: NS1101/NS1102 (China), Incoloy 800/800H (USA) |
| Chemical Composition (Weight %) | Alloy 800: Ni30.0-35.0, Cr19.0-23.0, Fe≥39.5, Al0.15-0.60, Ti0.15-0.60, C≤0.10, Mn≤1.50, Si≤1.00, S≤0.015
Alloy 800H: Ni30.0-35.0, Cr19.0-23.0, Fe≥39.5, Al0.15-0.60, Ti0.15-0.60, C0.05-0.10, Mn≤1.50, Si≤1.00, S≤0.015 Note: Controlled carbon content (0.05-0.10%) and coarse grain structure (ASTM No.5+) in 800H provide 3x higher creep strength than standard 800 above 600°C |
| Mechanical Properties (Solution Annealed) | Alloy 800: Tensile≥450MPa, Yield≥170MPa, Elongation≥30%, HB120-180
Alloy 800H: Tensile≥485MPa, Yield≥205MPa, Elongation≥30%, HB130-190 High-Temp Properties: 800H maintains 60MPa tensile strength at 870°C and 30MPa creep rupture strength at 980°C for 10,000 hours Max Service Temp: Alloy 800: 600°C; Alloy 800H: 900°C continuous |
| Dimensional Tolerance | 1. Hot-Finished Bars: Ø6-50mm ±0.3mm; Ø50-150mm ±0.5mm; Ø150-300mm ±0.8mm
2. Cold-Finished Bars: Ø6-50mm ±0.1mm; Ø50-100mm ±0.2mm 3. Forged Bars: Custom dimensions per drawing, tolerance ±0.5mm 4. Length Tolerance: ±2mm (1-6m); custom lengths up to 12m available 5. Straightness: ≤0.3mm/m for precision bars |
| Why These Materials Are Used in Chemical Industry | 1. Unmatched High-Temperature Creep Resistance:
– Alloy 800H is specifically engineered for long-term service under constant load at 600-900°C – Resists deformation and bulging in ethylene cracking tubes and reformer tubes – Ensures 5-10 year furnace tube life compared to 1-2 years for stainless steel – Reduces unplanned shutdowns and maintenance costs 2. Superior Oxidation and Carburization Resistance: – Forms a dense, adherent Cr₂O₃ scale that protects against oxidation up to 1100°C – Excellent resistance to carburization in hydrocarbon-rich atmospheres – Resists metal dusting in reducing environments with high carbon activity – Eliminates the need for protective coatings that degrade at high temperatures 3. Excellent Chloride SCC Immunity: – 30-35% nickel content provides exceptional resistance to chloride-induced stress corrosion cracking – Resists cracking in steam-hydrocarbon mixtures containing chlorides – Ideal for quench boilers and heat exchangers in ethylene plants – Eliminates the most common failure mode in high-temperature chemical equipment 4. Versatile Corrosion Resistance: – Good resistance to nitric acid, sulfuric acid and alkaline solutions at moderate temperatures – Resists corrosion in ammonia, hydrogen and methane atmospheres – Suitable for both oxidizing and reducing environments – One alloy can be used for multiple process steps, simplifying supply chains 5. Superior Cost-Effectiveness: – 30-40% lower material cost than high-nickel alloys like Inconel 625 – 5-10 times longer service life than 304/316 stainless steel in high-temperature applications – Reduces total cost of ownership by 60-70% compared to stainless steel |
| Application Scenarios and Corresponding Customers | 1. Ethylene and Petrochemical Industry:
– Applications: Cracking furnace tubes, pigtails, outlet manifolds, quench boilers, heat exchanger tubes – Customers: Dow Chemical, ExxonMobil Chemical, Shell Chemical, BASF, SABIC, Sinopec 2. Ammonia and Fertilizer Industry: – Applications: Primary reformer tubes, secondary reformer components, ammonia effluent coolers, urea reactor internals – Customers: Yara International, CF Industries, Nutrien, Koch Fertilizer, China National Chemical Corporation 3. Methanol and Syngas Production: – Applications: Steam methane reformer tubes, syngas coolers, shift converter components, heat exchangers – Customers: Methanex, Linde, Air Liquide, Haldor Topsoe, Johnson Matthey 4. Oil Refining Industry: – Applications: Hydrocracker heater tubes, catalytic reformer components, sulfur recovery units, hydrogen production plants – Customers: ExxonMobil, Shell, BP, Chevron, TotalEnergies 5. Fine Chemical and Pharmaceutical Industry: – Applications: High-temperature reactor components, heat exchangers, process piping, furnace fixtures – Customers: Merck, Pfizer, Novartis, Bayer, Dow AgroSciences |
| Customer Requirements in This Industry | 1. Performance Requirements:
– Creep-Rupture Strength: Must meet minimum creep rupture properties at design temperatures – Oxidation Resistance: Must resist oxidation and scaling at operating temperatures up to 900°C – Carburization Resistance: Must resist carbon penetration in hydrocarbon atmospheres – SCC Resistance: Must be immune to chloride-induced stress corrosion cracking – Thermal Fatigue Resistance: Must withstand frequent start-ups and shutdowns without cracking 2. Quality and Compliance Requirements: – ASME Code Compliance: Must meet ASME Section I and VIII Div.1 requirements – Material Standard Compliance: Must meet all requirements of ASTM B408 and ASME SB408 – Full Traceability: Must provide complete traceability from raw material to finished product – Material Certification: Must provide comprehensive MTRs including chemical analysis, mechanical properties and grain size – Third-Party Inspection: Must allow inspection by TÜV, SGS, BV or other authorized organizations 3. Manufacturing Requirements: – Precision Dimensional Tolerances: Must meet tight tolerances for proper fit and assembly – Surface Quality: Must have smooth, defect-free surfaces to prevent corrosion initiation – Internal Quality: Must be free from inclusions, porosity and segregation (100% UT verified) – Consistent Quality: Must have uniform chemical composition and mechanical properties across all batches – Heat Treatment Control: Must undergo proper solution annealing to achieve required grain size and properties |
| Common Related Products in This Industry | 1. Alloy 800/800H Seamless Pipes/Tubes: For furnace tubes, heat exchangers and process piping
2. Alloy 800/800H Forgings: Custom forgings including flanges, valve bodies, pump casings and tube sheets 3. Alloy 800/800H Fasteners: Bolts, nuts, screws, studs and washers for high-temperature service 4. Alloy 800/800H Welding Materials: ERNiCr-3 and ENiCrFe-3 electrodes and wires 5. Alloy 800/800H Sheets and Plates: For furnace liners, heat shields and structural components 6. Alloy 800/800H Machined Components: Precision-machined valves, fittings and furnace parts 7. Alloy 800/800H U-Bend Tubes: Custom bent tubes for heat exchangers and condensers 8. Custom Fabricated Assemblies: Pre-fabricated piping spools and furnace components |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Chemical Alloy Expertise: We have supplied Alloy 800/800H products to over 150 chemical plants worldwide
2. Full ASME and International Certification: Our production line meets the strictest chemical industry standards 3. Complete Grade Range: We offer both Alloy 800 and 800H grades in one place, simplifying your supply chain 4. Full-Process Quality Control: We implement 100% ultrasonic testing and grain size analysis on all bars 5. Advanced Manufacturing Capabilities: We use state-of-the-art equipment to produce precision bars up to 300mm diameter 6. Strategic Inventory Management: We maintain 200+ tons of Alloy 800/800H inventory to support urgent requirements 7. Global Chemical Supply Chain Experience: We have extensive experience delivering to major chemical companies worldwide 8. One-Stop Solution: We provide complete solutions from raw material supply to finished machined components |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full MTR including chemical analysis, mechanical properties, grain size and NDT results. Creep and corrosion test reports available upon request
2. Full Material Traceability: Every bar has a unique heat number and complete traceability documentation 3. Value-Added Processing: We offer precision cutting, CNC machining, heat treatment and surface finishing services 4. Emergency Response Service: We provide 24/7 emergency support for unplanned plant shutdown requirements 5. Market Growth: The global Alloy 800/800H market for chemical industry is projected to grow at a CAGR of over 5% through 2030, driven by petrochemical capacity expansion in Asia and the Middle East 6. Sustainability Commitment: All our products are manufactured using sustainable practices and are 100% recyclable |
| Packaging | 1. Plastic Caps: All bar ends are protected with heavy-duty polyethylene caps with internal sealing rings to prevent contamination
2. Waterproof Film: Each bar is individually wrapped in waterproof and anti-corrosion film 3. Bundle Packing: Bars of the same size are bundled with steel straps and wooden spacers to prevent contact damage 4. Wooden Case: Bundles are packed in sturdy fumigated wooden cases with steel reinforcement for international shipping 5. Export Standard Packing: All packaging complies with international export standards and ISPM 15 regulations 6. Marking: Each package is clearly marked with product specifications, heat number, batch number, quantity and destination |
Looking for Alloy 800/800H bar for chemical processing? Send us your size, quantity and operating conditions. We will provide a customized solution and competitive quotation.