Incoloy 800H (UNS N08810) Supplier | Bar, Tube, Plate - Hangbo Alloy

Shanghai Hangbo Alloy Group Co., Ltd. is an ISO 9001:2015 certified manufacturer and global supplier of Incoloy 800H (UNS N08810), providing precision-quality round bars, seamless tubes, and plates for petrochemical, power generation, and high-temperature process equipment industries.

Quick Answer: What Is Incoloy 800H?

Incoloy 800H (UNS N08810) is a nickel-iron-chromium alloy — a controlled-composition version of Incoloy 800 — specifically engineered for superior creep and stress-rupture strength at temperatures above 600°C (1112°F). The key differences from standard Incoloy 800 are:

• Higher carbon content (0.05–0.10%) to strengthen the grain boundaries
• Controlled grain size (ASTM No. 5 or coarser) to maximize long-term creep resistance

It is listed in ASME Boiler and Pressure Vessel Code and widely used for furnace tubes, pigtails, and heat exchanger components in hydrogen reforming and ethylene cracking plants.

Key standards: ASTM B408 (bar), ASTM B163 (condenser/heat exchanger tube), ASTM B407 (pipe), ASTM B409 (plate), ASME SB-163 / SB-407 / SB-408 / SB-409

Why Engineers Choose Incoloy 800H

Applications of Incoloy 800

Incoloy 800 (UNS N08800) is widely used in heat exchangers, industrial furnaces, carburizing equipment, sheathed heating elements, nuclear steam generator tubing. The alloy maintains excellent mechanical properties at temperatures up to 1500F (816C) for prolonged service, making it suitable for demanding high-temperature service environments.

Standards & Specifications: ASTM B409, ASME SB409