SUPER304H™

<Features>
(a) Highest strength among 18Cr-8Ni austenitic stainless steels utilizing Cu-rich phase
(b) Fine-grained microstructure by Thermo-Mechanical Process, which contribute to
      superior steam oxidation resistance to conventional coarse-grained 347H.
(c) Superior weldability to 347H due to smaller amount of niobium,
      PWHT is not mandatory, and matching welding consumable is available.
(d) Good phase stability proven by long term creep-rapture tests and actual uses.

<Equivalent steel grade, chemical compositions>

• ASTM A213 S30432, ASME SA213
• 18Cr-9Ni-3Cu-Nb-N