SS 446 Pipe & Tubing

Stainless Steel 446 is a very high chromium ferritic temperature resistant alloy with outstanding resistance to metabolism, sulfidation along with other types of hot corrosion. This grade is most frequently utilized between 1500 – 2100°F, even though it is elevated temperatures energy is really low. 446 is the only temperature resistant alloy that can tolerate molten copper or brass. Similar to other high chromium ferritic stainless steel, 446 embrittles severely in the 700-1000°F temperatures range (885°F embrittlement). 446 ought not to be utilized in this heat range except close to complete loss of room temperatures ductility might be tolerated. Sigma phase embrittlement takes place upon very long time exposure in the 1000-1300°F range.
446 possess excellent ductile-to-brittle impact transition temperatures. Thus, effective forming and also bending is assisted by lower forming speeds, edge preparation or preheating to 250-400°F. Annealing, while necessary have to be performed at 1550-1650°F followed by quick cool.
Welding can be accomplished by standard methods. Pre-heating and postheating to 300-600°F is beneficial. Austenitic weld fillers, for example AWS E310 or E312 are usually recommended to maximize weld deposit ductility.


Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General ServiceASTM A 268

Mechanical Properties

Tensile Strength : Unit – ksi (MPa) , Minimum
Yeild Strength : 0.2 % Offset , Unit – ksi (MPa) , Minimum
Elongation : in 2″, Unit : % , MinimumValues as per ASTM A 268

Condition & GradeTensile StrengthYeild StrengthElognation
Annealed Tp 446 – 170 (485) 40 (275)18
Annealed Tp 446 – 265 (450) 40 (275)20

Thermocouple Industry

Welded Pipe


Stocking & Supplying Seamless Pipes as small as 1/4″ NB and 6″ NB. Thickness ranging from Sch 10 to Sch 80.

Tube / Tubing

Tubes / Tubing

Stocking & Supplying Seamless Tubes / Tubing from 6mm OD to 101.6mm OD. Thickness ranging from 0.8mm to 6mm.