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AISI 446 UNS S44600 Stainless Steel Seamless Tube / Thermocouple protection tube
S44600 is a ferritic, stainless chromium steel for use in high-temperature applications such as
recuperators in the metallurgical and glass industries and thermocouple protection tubes.
The stainless AISI 446 grade is especially suitable for sulfurous flue gas atmospheres and can be used
at temperatures up to 1100°C (2010°F), depending on the service parameters and application.
The ferritic structure of 446 stainless also gives it good resistance to extremely corrosive metal melts,
such as copper, tin and lead.
Extremely good resistance to reducing sulphurous gases
The grade's extremely good resistance to reducing sulfudizing gases
and salts, compared with austenitic stainless steels,
is due to the high chromium content and absence of nickel.
446 stainless also exhibits excellent resistance to isothermal and cyclic oxidation in air.
Main characteristics of 446 stainless steel seamless tubes
Typical applications for high temperature ferritic grade 446 stainless are:
Grade designation
| AISI | UNS | EN | DIN | Chemical composition % weight |
| ASTM 446-1 | S44600 | 1.4749 | X18CrN28 | C 0.20 max, Si 1.00 max, Mn 1.50 max, P 0.040 max, S 0.030 max, Cr 23.0~27.0, Ni 0.75 max, N 0.25 max |
Product standards
ASTM A268 Specification for Seamless and Welded Ferritic and Martensitic
Stainless Steel Tubing for General Service
EN 10297-2 Seamless steel tubes for mechanical and general engineering
purposes
SS 14 23 22
Forms of supply
Stainless steel seamless tube and pipe, annealed, pickled / bright polished
For Details, please Contact
WUXI GUANGLU Special Steel Co., Ltd.
Stainless martensitic • precipitation hardening steel • stainless ferritic — Our answer to your needs
Tel: +86 510 81812873
Email: export@guanglusteel.com
