ASTM A240 304/304L stainless flat steel

ASTM A240 304/304L stainless flat steel apply to hoop iron making,tools and machinery parts,room frame structure,escalator. ASTM A240 304 is the most common grade; the classic 18/8 stainless steel. Outside of the US it is commonly known as "A2", in accordance with ISO 3506 (not to be confused with A2 tool steel).

ASTM A240 304L stainless flat steel is an extra low-carbon variation of 304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. As a result,this alloy can be used in the ”as-welded“ condition, even in severe corrosive conditions. It often eliminates the necessity of annealing weldments except for applications specifying stress relief. It has slightly lower mechanical properties than 304.

ASTM A240 304/304L stainless flat steel specification: Thickness--4mm-30mm Width--12mm-200mm Flat steel are divided into three groups by weight 1.Every m less than 19 kg,usually long 3 ~ 9 m (length). 2.Every m less than 19 ~ 60 kg,usually long 3 ~ 7 m (length). 3.Every m greater than 60 kg,usually long 3 ~ 5 m (length). Models for non-standard products, usually 2 ~ 6 m length

ASTM A240 304/304L chemical composition

ASTM A240 304/304L hot-rolled stainless flat steel mechanical properties

ASTM A240 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications. ASTM A240 304/304L stainless flat steel heat treatments: ASTM A240 304 is non-hardenable by heat treatment.Annealing:Heat to 1900-2050oF(1038-1121oC),then cool rapidly.thin strip sections should be water quenched to minimize exposure in the carbide precipitation region.stress relied annealing:cold worked parts should be stress relieved at 750of(399oC)for 1/2 to 2 hours.

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