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J1/J2/J3/J4/J5 difference of 201

J1/J2/J3/J4/J5 difference of 201

J series element composition comparison

Using the J series sample element tables of Qingshan and Chengde with the largest output for comparison, the nickel and chromium composition of the J series are not particularly different, but the carbon content and copper content are the most obvious.

Copper content: J4>J1>J3>J2≈J5.

Carbon content: J5≈J2>J3>J1>J4.

Hardness ranking: J5≈J2>J3>J1>J4.

2J series price comparison

According to today’s Qingshan (J1-J4) and Chengde (J5) hot-rolled market prices for comparison: the order of prices from high to low is: J4>J1>J3>J2≈J5.

3 The use of J series integrated user feedback

Practice is the only criterion for testing truth. Which industries are J series suitable for users?

The main feedback is as follows:

J4: It is the higher-end variety in the J series. It is suitable for the small-angle type of deep-drawn products. Most products that require deep-drawing and salt spray tests will choose it. Such as sinks, kitchen utensils, bathroom products, kettles, thermos cups, door hinges, pots, etc.

J1: Carbon content is slightly higher than J4 and copper content is lower than J4. Its processing performance is not as good as J4. It is suitable for ordinary shallow drawing, deep drawing products with large angles, such as decorative panels, sanitary products, sinks, product pipes, etc.

J3: Suitable for decorative tubes. Simple processing can be done in the decorative board, but not a little more difficult. There is feedback that the shear plate is bent, and there is an internal seam after it is broken (the black titanium, color plate series, sanding board, broken, and there is an internal seam). The sink material has tried to bend, 90 degrees is fine, but it can’t be continued.

J2, J5:

Decorative pipes: simple decorative pipes are good because they have high hardness (all above 96°) and polished more beautifully, but square pipes or bends (90°) are prone to bursting.

Flat plate: Due to the high hardness, the plate surface is more beautiful, and the surface treatment such as frosting, polishing, and color plating are acceptable. But the biggest problem is the bending problem. The bending is easy to break, and the groove is easy to burst. Poor ductility.