Haynes 556 (UNS R30556) – Supplier of Round Bars, Seamless Tubes & Plates | Shanghai Hangbo Alloy Group

By Shanghai Hangbo Alloy Group Co., Ltd. | ISO 9001:2015 Certified | Est. 2012 | Shanghai, China

Quick Answer: What Is Haynes 556?

Haynes 556 (UNS R30556 / W.Nr. 1.4883) is a high-strength, iron-nickel-chromium-cobalt superalloy that combines effective resistance to sulfidizing, carburizing, and chlorine-bearing environments at high temperatures. Specified to ASTM B435 and AMS 5831, it maintains excellent oxidation resistance and high-temperature strength up to 1095°C (2000°F). Shanghai Hangbo Alloy Group supplies Haynes 556 as round bars, seamless tubes, and plates with full EN 10204 3.1 certification, supporting critical energy and waste-to-energy applications worldwide.

Key Properties at a Glance

Shanghai Hangbo Alloy Group Co., Ltd. — Your All-Purpose Partner for High-Temperature Environmental Resistance.