303 Stainless Steel Sheet

303 Stainless Steel Sheet

303 Stainless Steel Sheet Performance 303 tensile Strength: σb (MPa)≥520, Conditional yield strength: σ0.2(MPa)≥205, Elongation rate: δ5 (%)≥40, Section shrinkage rate of: ψ (%)≥50, Hardness: ≤187HB;≤90HRB;≤200HV Characteristics 303 Stainless steel Bar: By adding a small amount of sulphur,...
Product description

303 Stainless Steel Sheet Performance

303 Tensile Strength: σb (MPa) ≥ 520

Conditional Yield Strength: σ0.2(MPa) ≥ 205

Elongation Rate: δ5(%) ≥ 40

Section Shrinkage Rate: ψ(%)≥50

Hardness: ≤187HB; ≤90HRB; ≤200HV


303 Stainless steel Bar: By adding a small amount of sulphur, phosphorus to make it more than 304 cutting processing, and other properties similar to 304.

Application Scope

Petroleum, electronics, Chemical industry, medicine, textile, food, machinery, construction, nuclear power, aerospace, military and other industries!

Surface Quality

Stainless steel sheet is a very high price material, customers on its surface quality requirements are very high. But the stainless steel sheet in the production process will inevitably appear a variety of defects, such as scratches, pitting, Chacon, dark lines, creases, pollution, and so on, its surface quality, such as scratches, creases, such as defects, whether high-grade or low-level are not allowed to appear, and hemp point, Chacon such defects in the spoon, spoon, fork, production is also never allowed, It's hard to get rid of it when it's polished. We determine the quality level of the table based on the extent and frequency of the surface defects, thus determining the product grade.

Thickness Tolerance

In general, stainless steel products are different, its requirements for raw material thickness tolerances are also different, such as the second kind of tableware and thermos cup, thickness tolerance generally higher requirements, for-$number, and a class of tableware thickness tolerance general requirements-5%, steel pipe class requirements-10%, hotel use of wood thickness tolerance requirements for-8%, Distributors ' requirements for thickness tolerances are generally in -4%~6% rooms. At the same time, the difference between internal and external sales of products will also lead to customer thickness tolerance requirements of raw materials different. General export products Customer thickness tolerance requirements are higher, while domestic enterprises on the thickness tolerance requirements are relatively low (mostly for cost considerations), some customers even require-15%.


Different requirements for the use of the product also vary. A class of tableware on the welding performance is generally not required, even including some of the pot-like enterprises. But most of the products require good welding performance, such as two kinds of tableware, thermos, steel pipe, water heater, water dispenser and so on.

Corrosion Resistance

Most stainless steel products require good corrosion resistance, like one or two kinds of tableware, kitchenware, water heaters, drinking fountains, and some foreign businessmen to the product also do corrosion resistance test: with NaCl aqueous solution heated to boiling, after a period of time after the solution, wash dry, said weight loss, to determine the degree of corrosion (note: Product polishing, Due to the presence of FE in Emery cloth or sandpaper, the surface rust can be caused when testing.

Polishing Performance (BQ)

At present, stainless steel products in the production of generally polished this process, only a few products such as water heaters, drinking fountains and so do not need polishing. So this requires that the raw material polishing performance is very good. The factors that affect polishing performance are as follows:

① raw material surface defects. such as scratching, pitting, pickling, etc.

② raw material material problem. Hardness is too low, polishing is not easy to throw bright (BQ), and the hardness is too low, in the deep stretch surface prone to orange peel phenomenon, thus affecting BQ. The BQ of high hardness is relatively good.

③ after the deep stretching of the product, the deformation of the area of a large surface will also be small black spots and ridging, thus affecting the BQ of sex.


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