253MA
Alleima® 253 MA is an austenitic chromium-nickel steel alloyed with nitrogen and rare earth
metals.
The grade is characterized by:
- High creep strength
- Very good resistance to isothermal and, particularly, cyclic oxidation
- Good structural stability at high temperatures
- Good weldability
- Maximum operating temperature is approx. 1150°C (2100°F)
Trademark information: 253 MA is a trademark owned by Outokumpu OY
Ficha
Técnica
Catálogo Alleima
- The high creep strength of Alleima 253 MA, coupled with its excellent oxidation resistance and its good
resistance to carburization in constantly carburizing gas, makes it a very suitable material for end uses in which 18/8 steels lack the necessary resistance to oxidation and carburization.
- Alleima 253 MA is often preferred instead of stainless chromium steels which have insufficient creep strength and structural stability. Furthermore, Alleima 253 MA can very well take the place of higher alloyed materials such as 25Cr/20Ni steels and Alloy 800H, or even Alloy 600 in certain cases.
- Alleima 253 MA has come to be used extensively in the metallurgical, petrochemical and power industries
Standards:
UNS: S30815
EN Number: 1.4835
W.Nr.: (1.4893)*/(1.4828 mod.)*
SS: 2368*
Product standards
ASTM A213, A312
EN 10297-2
SS 14 23 68*
* Obsolete. Replaced by EN.
Aplications:
- Tubes in waste heat recovery systems in the metallurgical industry, e.g. recuperators
- Tubes in heat treatment furnaces, e.g. radiation tubes, thermocouple protection tubes, burner components, furnace, rollers.
- Tubes for injection of pulverized coal in blast furnaces.
- Tubing for fluidized-bed combustion plants.
- Furnace tubes for mud incineration plants.
- Tubes for carbon black process gas coolers/air heaters.
- Tubes for the glass and cement industries.
- Styrene reactor tubes.
- EDC cracking tubes.
- Convection tubes in ethylene cracking.
- Air preheater tubes in sulphuric acid gas converters.
- Muffle tubes in continuous wire annealing furnaces.
ACEROS TITANIUM no garantiza la exactitud de la información contenida en este documento y recomienda que los usuarios investiguen en profundidad aspectos técnicos y especificaciones antes de realizar una compra. Esta información técnica ha sido recompilada de diversas fuentes en línea, incluyendo Alleima, Ovako y Roxon entre otras. Esta ficha técnica ha sido proporcionada solo para fines informativos y no ha sido verificada de forma independiente por ACEROS TITANIUM CHILE LTDA.