What's the difference between Yukun Steel and Kungang Steel?

Kunming Iron and Steel Company is a state-owned enterprise, and steel mills such as Anning and Mengzi under it can see steel bar signs in specific factories.

Yukun Steel should be regarded as a private enterprise, usually called "Yukun Steel".

They have different characteristics.

Most of the steel bars in Kungang are darker than Yukun steel, and the surface of Yukun steel is relatively smoother. According to the luster of its section, Yugang only selects the one with carbon content of about 1 ~ 1.7% and less impurities, which is called Yugang. Therefore, Yugang can be said to be a low-temperature melting block steelmaking.

The factory construction time, process details and equipment of Kungang are different, which leads to the difference of steel bar color. The color of steel bars in Yuxi of Kungang is close to that of Yukun Steel.

3. The signs are different.

The steel seal on the steel bar produced by Kungang is "kg"; The steel seal on the steel bar produced by Yugang Iron and Steel Company is "YKG".

There are numbers and letter codes on the steel bars, which represent the origin and specifications of the steel bars.

Extended data:

Composition of jade steel

The composition table of Yugang is iron 98.12%-95.22%; 3.00%-0. 10% carbon; Copper1.54%; Manganese 0.11%; 0.05% tungsten; Molybdenum 0.04%; 0.02% titanium; Silicon uncertainty; Other trace elements.

China steel numbering rules

(1) Use element symbols

② Uses: Chinese pinyin, open hearth steel: P, boiling steel: F, killed steel: Z, grade A steel: A, T8: Te8, GCr 15: ball.

Composite steel and spring steel, such as 20CrMnTi 60Si2Mn (C content is expressed in parts per ten thousand).

Stainless steel and alloy tool steel (C content is expressed in thousandths), such as: thousandth 1Cr 18Ni9 (i.e. 0. 1%C), stainless steel C≤0.08%, such as 0Cr 18Ni9, and ultra-low carbon C ≤ 0.03.

Baidu Encyclopedia-Yugang

Baidu Encyclopedia-Steel (Steel)