Muffle tubes

Muffle tubes in a wide range of high-temperature corrosion resistant materials. The Sandvik program of muffle tubes includes materials suitable for all types of shielding gases and environments, covering service conditions up to 1200ºC (2190ºF).

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Sandvik muffle tubes are characterized by long service life and contribute to reduced maintenance costs in, for example, wire drawing mills, tube annealing and in the production of bundy tube and razor blades.

Wide stock program

Sandvik holds stock of muffle tubes in several commonly used sizes. The muffle tubes are available in long lengths suitable for all types of furnaces. View our stock program of high-temperature tubes

Muffle tube materials (other grades can be offered on request)
Sandvik grade
Max. operating temp. ºC (ºF)Typical environments
Sandvik 253 MA*
(UNS S30815)
1100ºC (2010ºF) For oxidizing and sulphidizing conditions.
Sandvik 353 MA*
(UNS S35315)
1150ºC (2100ºF) For oxidizing, carburizing and nitriding conditions as well as in endothermic gas or environments containing hydrogen gas (H2).
Sandvik 4C54
(UNS S44600)
800ºC (1470ºF) For oxidizing and sulphidizing conditions as well as for environments containing hydrogen gas (H2).
Sanicro 61
(UNS N06601)
1150ºC (2100ºF) For oxidizing and nitriding conditions.
Sanicro 31HT
(UNS N08811/N08810)
1100ºC (2010ºF) For carburizing and nitriding conditions.
Kanthal APM
Kanthal APMT
1200°C (2190°F) For oxidizing, carburizing and sulphidizing conditions as well as in environments containing hydrogen gas (H2).

*253 MA and 353 MA are trademarks owned by Outokumpu Stainless.

Technical services

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Stock program

Sandvik holds stock of several commonly used grades and sizes of high-temperature tubes.
View stock program