How to identify the stainless steel wire rope (b) but high carbon steel type 420 and 440 points during nitric acid test is slightly affected by corrosion, non-ferrous metals encountered immediately concentrated nitric acid corrosion, and dilute nitric acid having a strong corrosive to carbon steel. The easiest way to spot copper sulfate copper sulfate test point test method is quick to distinguish between ordinary carbon steel and all types of stainless steel wire rope, the concentration of copper sulfate solution used is 5% to 10%, before making spot test, test District should completely remove oily or other impurities, and with sanding or polishing cloth Polishing a small area, and then drops again to polish at ordinary carbon steel or iron within a few seconds the surface will form a layer of copper , but the point is not to produce the test surface of stainless steel or copper precipitate copper color display. Sulfuric acid immersion test method 302 and 304 stainless steel can 316 and 317 separate. Trimming the sample to be finely ground, then the volume concentration of 20% to 30%, preferably 304 stainless steel wire manufacturers, the temperature of the sulfuric acid 60 ~ 66 ℃ cleaning and passivating a half hour, the volume concentration of the sulfuric acid solution When 10% 304 stainless steel wire manufacturers, heated to 71 ℃, 302 and 304 immersed in the solution, and the corrosion of the steel was rapidly produce a large number of bubbles, black samples within a few minutes; and 316 and 317 samples of the steel from corrosion or corrosion is very slow (no bubbles), the price of 304 stainless steel wire manufacturers, test in 10 to 15 minutes does not change color. If the sample tested simultaneously with a known composition to approximate comparison, 304 stainless steel wire phone manufacturers, enables more accurate test. Fasteners made of stainless steel wire of the five principles of the majority of the selection can be made of stainless steel wire or rod for fasteners, austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, precipitation hardening stainless steel. The choice of stainless steel wire from the following five aspects to consider. 1, the material of the fastener in mechanical properties, especially the strength requirement. 2, the working conditions of the corrosion resistance of the material aspects of the requirements. 3, the working temperature of the heat resistance of the material (high-temperature strength, oxidation resistance) requirements. 4, the production process for material processing performance requirements. 5, other aspects, such as weight, price, purchase various factors must be considered. 304 stainless steel wire manufacturers | Shengyuan Stainless | 304 stainless steel wire factory service provided by the Dongguan City Shengyuan Stainless. 304 stainless steel wire manufacturers | Shengyuan Stainless | 304 stainless steel wire factory service Dongguan City Shengyuan Stainless Steel Co., Ltd. (dg-shengyuan.cn) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Liang Ye.