1. What is 70mn steel used for?
MN steel has very high strength, hardness, yield ratio, but small hardenability, poor heat resistance, low ability to bear dynamic and fatigue loads Very widely used, but mostly used in small springs with low working temperature or less important larger springs. Such as automobiles, tractors, rolling stock and general machinery springs.
MN is a carbon structural steel material with a chemical composition of 67% to 75% carbon, 17% to 37% silicon, 70% to 00% manganese, less than 035% phosphorus and sulfur. According to international standards, the corresponding grade of 70MN is GB T 699-1999, which has excellent mechanical properties and processability.
60mn-70mn steel, used to make springs and plough laws, etc. Taijin Structural Steel Alloy Structural Steel, referred to as bonded steel, is a steel grade made by appropriately adding one or several alloying elements (total V 5%) on the basis of high-quality carbon structural steel.
4. In short, 70mn non-magnetic steel is a steel with excellent performance and wide range of uses, which is widely used in machinery manufacturing, automobile manufacturing, shipbuilding and other fields. Applications of 70mn non-magnetic steel 70mn non-magnetic steel is a high-strength, high-toughness steel named because it is not magnetic.
MN non-magnetic die steel has high hardness;Low permeability, good toughness and extremely good corrosion resistance at 700, it is an ideal material for manufacturing non-magnetic molds, and the product chemical composition is stable, with superior performance and durable life.
Steel can be used as a suspension spring and shock-absorbing steel plate for automobiles (commonly known as "steel flat shoulder"). 65mn can be used as a wire pad for screws and a card seat spring for motor brushes. Both can be used as knives, 65mn should have better performance, and 70 is more suitable for heavy knives.
2. What is the difference between No. 70 steel and 65 manganese steel
Manganese steel is a high-carbon steel with the main advantage of being relatively low and easy to forge and machine. This kind of steel has high hardness and strength, and is suitable for the manufacture of large agricultural machinery, machine tools and other heavy machinery. In terms of application in cutting tools, the hardness of 65 manganese steel is between HRC58-62, and the advantage is that it has good wear resistance and is not easy to break.
What is the difference between MN spring steel and 85MN spring steel manganese steel WT132662608965MN strength. Hardness. The elasticity and hardenability are higher than that of No. 65 steel, and it has a tendency to overheat and temper brittleness, and water quenching has a tendency to form cracks. The machinability of the annealed state is acceptable, the cold deformation plasticity is low, and the weldability is poor.
Manganese steel is divided into soft and hard materials. If it is a 6 mm soft material of 65 manganese steel, the soft material will not encounter the problem of cracking.
The main thing is that it is easy to stick and the product is easy to burr. The stickiness has little to do with the hardness of the die steel, because most of the cold work die steel we choose has a hardness of HRC58 or above, which is enough to wear it.
4. The content of components contained in high-manganese steel and high-carbon steel is also different, so their hardness and wear resistance are different. Therefore, when purchasing, you need to look at your actual needs before you can choose a more suitable one for easy use.
What is the difference between No. 70 steel and 65 manganese steel, 70 high-carbon steel, cemented carbide steel, 65mn and 70mn, the carbon content is different. 65mn is an alloy steel containing manganese alloy, with a carbon content of 65, lower than 70mn, which is a manganese alloy added on the basis of high-carbon steel, and is a steel for springs and hardware, with high hardness and high strength, but lower than 70mn.
6. The steel is commonly used spring steel. It has high strength, good hardenability, low decarburization tendency, low machinability, and good machinability.
However, it is susceptible to overheating, prone to quenching cracks, and tempered brittleness. It is widely used in the manufacture of a wide range of flat and round springs, leaf springs and spring sheets with small cross-sections.