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Stainless steel flat bar

Stainless steel flat bar

Time:2022-04-07 Source:Wuxi Jianuo Special Steel Co.

Stainless steel flat bar is rectangular steel with a slight pure edge. Stainless steel flat steel can be semi-finished steel. There are cold-drawn polished stainless steel flat steel and hot-rolled acid white sandblasted stainless steel flat steel.

Classifications

Cold-drawn polished, hot-rolled pickled white sandblasted

Stainless steel flat steel can be formed according to the different needs of the structure of a variety of different force members, but also between the members of the connection. Widely used in a variety of architectural and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves.

Stainless steel flat steel is used in construction projects as bridges, house frames, fences, power transmission ships, vehicles, etc. The raw material billet for the production of stainless steel flat steel is low carbon square steel billet, and the finished stainless steel flat steel is delivered in hot rolled formed, cold rolled or hot rolled condition. When trading, the contract and other documents should be filled in the stainless steel flat steel side width, side thickness dimensions, and major other process matters, such as annealing, solid solution, etc.

Types and specifications

Mainly divided into two categories of equal and unequal sides, where equal sides can be divided into the specifications of the square steel with side length and side thickness dimensions. Domestic specifications are 3mm*20m-150mm.

Import and export orders are generally based on the specifications required in use, and the steel number is the corresponding carbon steel number. That is, in addition to the specification number, there is no specific composition and performance series.

The delivery length of stainless steel flat steel is divided into two kinds of fixed length, times the length of the domestic fixed length selection range according to the specification number of 3-9m, 4-12m Japan-made length selection range of 6-15m.

Appearance quality

The surface quality of stainless steel flat steel in the standard, the general requirements shall not exist on the use of harmful defects, such as delamination, scars, cracks, etc..

The permissible range of geometric shape deviation is also specified in the standard, generally including curvature, side width, side thickness, top angle, theoretical weight and other items, and specified to have a significant twist.

Inspection

Chemical composition

(1) composition indicators: the chemical composition of stainless steel flat steel is a general structural rolling steel series, the main test indicators for C, Mn, P, S four. Depending on the grade, the content varies, the approximate range of C < 0.08%, Mn: 2.0, P < 0.035%, S < 0.03%.

(2) Test methods: When testing the above chemical composition, the commonly used standard test methods are GB223, JISG1211-1215, BS1837, BS Manual 19, ГОСТ22536, etc.

According to the above-mentioned standards, the delivery shall be made in bundles, the bundle number, the length of the same bundle, etc. shall be in accordance with the regulations. Generally it is delivered bare, and it should be transported and stored in moisture-proof condition.

Mechanical properties

(1) Test methods.

① Tensile test method. Commonly used standard test methods are GB/T228-87, JISZ2201, JISZ2241, ASTMA370, ГОСТ1497, BS18, DIN50145, etc..

② Bending test method. Commonly used standard test methods are GB/T232-88, JISZ2204, JISZ2248, ASTME290, ГОСТ14019, DIN50111, etc.

(2) performance indicators: the test items to assess performance are mainly tensile test and bending test. Indicators include yield point, tensile strength, elongation and bending qualified items.

Weight calculation

Weight per meter (kg) = 0.00793 × side width (mm) × side thickness (mm)