ASTM 446-1 EN 1.4749 DIN X18CrN28 Stainless Steel Tube And Pipe Seamless

ASTM 446-1 EN 1.4749 DIN X18CrN28 Stainless Steel Tube And Pipe Seamless

ASTM A268 ASME SA268 Specification AISI 446-1, UNS S44600, TP446-1, EN number 1.4749,

DIN X18CrN28 stainless steel tubes.

Seamless steel tubes manufactured by cold finished ( cold rolled and cold drawn ), then annealed,

pickled, further polishing processing.

Grade 446 is a ferritic, heat resisting, stainless chromium steel, characterized by:

• Extremely good resistance to reducing sulphurous gases
• Very good resistance to oxidation in air
• Good resistance to oil-ash corrosion
• Good resistance to molten copper, lead and tin
• 446 stainless steel can be used at temperatures up to 1100°C (2010°F).
• However, allowance should be made for low creep strength at the highest temperatures in order to
• avoid distortion due to the mass of the steel.

Material 446 stainless should be chosen mainly for service at temperatures above 700°C (1290°F)

where the excellent resistance of the material to slag corrosion and sulphidizing gases is particularly advantageous.

Typical applications for 446 stainless are:

• Recuperators in the metallurgical and glass industries
• Thermocouple protection tubes
• Sootblower tubes
• Injection nozzles
• Muffle tubes in continous wire annealing furnaces

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