Metallic Interconnector Material for SOFC/SOEC ZMG232G10

A ferritic stainless steel which has oxidation resistance and the coefficient of thermal expansion when used as SOFC/SOEC interconnects

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What is Metallic Interconnector Material?

ZMG232G10 is a ferritic stainless steel which was developed for SOFC*1/SOEC*2 interconnects (separators).
ZMG232G10 is composed of Fe-24%Cr and a small amount of trace elements to obtain the following characteristics.

  1. 1Coefficient of thermal expansion close to electrolyte (YSZ)
  2. 2Good electrical conductivity at operating temperature
  3. 3Good oxidation resistance at operating temperature over a long period of time
  1. *1SOFC : Solid Oxide Fuel Cell
  2. *2SOEC : Solid Oxide Electrolysis Cell

Chemical composition (mass%)

Grade C Si Mn Cr Al Zr La W Cu Fe
ZMG232G10 0.02 0.1 0.3 24 0.1 0.25 0.07 2 1 bal.

Physical properties (room temperature)

Density
ρ
(g/cm3)
Thermal
conductivity
λ
(W/m/K)
Electrical
resistivity
ρ
(μΩm)
7.75 19.3 0.62

Coefficient of thermal expansion

Coefficient of thermal expansion

Mechanical properties

Mechanical properties

Oxidation resistance (850℃ in air)

Oxidation resistance (850℃ in air)

Application

(a)interconnect

(a)interconnect

(b)tube

(b)tube
(Laser welded by TOSEI ELECTROBEAM CO.,LTD)

The data include the results of the research and development supported by New Energy and Industrial Technology Research Development Organization (NEDO).

The characteristic values, photographs, charts, evaluations, etc. described are representative values based on our test data, and do not guarantee the quality of the product. In addition, the contents of the description are subject to change without notice.

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