This article will be of interest first of all to those who are looking for information submitted by the simplest and most understandable words. In it, you will learn basic information about a steel grade such as 35X, as well as get acquainted with its chemical composition and learn how steel is similar or similar in composition to other countries.
Application
35X steel has a very specific, but of great importance, since it is from this steel that the most important parts of various mechanisms are most often made, including the shafts of internal combustion engines, gear transmissions of rotational motion, as well as axles and, in some cases, ring rails.
What brings all these items together? At a minimum, quite a lot depends on their strength, which already tells us something about the possibilities of steel, of which, in fact, they are made. The above items are most often exposed to vibration. This means that the part must combine strength in order to fulfill its main function, but at the same time be sufficiently plastic and elastic so that under the influence of vibration it does not receive microcracks, which after a certain amount of time will lead to breakage.
GOST
Now it’s worth to find out how the 35X steel is actually called. According to regulatory documents, this is structural alloyed chrome steel. And, thanks to the Soviet system of naming steel grades, we can even find out some ins and outs of this alloy grade. For example:
- The designation “steel” allows us to understand that steel falls into the category “Quality”. This means that in the composition of steel 35X, the amount of harmful impurities is lower than that of steel of ordinary quality.
- The number 35 refers to the percentage of carbon in the alloy — an average of 0.35 percent.
- The letter “X” at the end of the abbreviation informs us of the increased content in the composition of the steel of such an alloying element as chromium.
Ligature and characteristics
As in any other case, the characteristics of 35X steel depend very much on the alloying elements included in its composition. They give steel the basic properties necessary for certain conditions. For 35X, the composition of chemical additives is as follows:
- Carbon - significantly increases the strength and hardness of steel, reducing ductility - 0.35%.
- Silicon - slightly increases the strength, while not affecting the overall fragility - 0.22%.
- Manganese - adds steel strength, resistance to shock loads, without trimming it in ductility - 0.65%.
- Chromium - slightly increasing the hardness of steel and protecting it from corrosion, by the formation of an oxide film - 0.95%.
- Copper - also positively affects the corrosion resistance of steel - up to 0.3%.
- Nickel - similarly increases oxidation resistance, as well as strength and flexibility - up to 0.3%.
We mentioned the so-called harmful impurities contained in 35X steel. Impurities such as sulfur and phosphorus just adversely affect the structure, and, as a consequence, the quality of the resulting steel. However, their content is often scanty and in this case is only 0.035% each.
Analogs
We are sure that you will not be surprised to learn that the analogues of the 35X steel are widely used in many countries of the world and are produced by the metallurgical plants there, but they have completely different names. This, incidentally, is also not at all surprising. After all, the system for naming steel grades in different states may differ. That is why it is important to get acquainted with at least a couple of foreign names and, if possible, remember them. You never know, come in handy.
Here is a short list specially for you:
- United States of America - 5132 or 5135
- European Union - 1.7033 or 34Cr4
- China - 35Cr
- Japan - SCr430 or SCr435
Now, having this list in mind, you can definitely determine the steel grade, similar to 35X. Whether this is useful to you is another question that you must answer yourself.