1. What is the hardness of 420 J2 steel
J2 420J1 420F stainless steel has a certain wear resistance and corrosion resistance, high hardness, and its ** is a lower class of stainless steel balls, which is suitable for the working environment of stainless steel common requirements. It is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation, household appliances, etc.
2. The 420J2 itself is stainless steel for making knives, and the knives made of this material are relatively sharp, and the hardness and strength are not bad. However, it should be noted that although this material is stainless steel, the rust resistance and corrosion resistance are not high, and the knife should be maintained carefully.
4. VG is the abbreviation of Virgin Steel, which is a Japanese steel grade, and 2,420J is also a Japanese JIS standard steel grade, which belongs to an alloy tool steel, and its toughness and corrosion resistance are lower than the above steel VG series, divided into 420J1 and 420J2.
The hardness of the oil after quenching should be 2HRC. 1050 After quenching, the microstructure grains obtained are coarse and brittle. It is recommended to use 1000 heating and quenching to obtain better structure and hardness.
2. What is the chemical composition of 420 J2
1. Chemical composition: carbon C: 28-3 manganese Mn: 70-9 phosphorus P: 03 sulfur S: 04 silicon Si: 15-3 nickel Ni: 40-7 chromium Cr: 40-6 vanadium V: 15-28630 is a special steel.
Introduction to stainless steel 420, and the basic information of this type of steel, chemical element composition, mechanical properties, mechanical properties, heat treatment temperature, reference table of the same model, etc.
Stainless steel is not food grade.
420 stainless steel is cutting edge grade martensitic steel, can not reach the food grade specifications, the metal composition of food grade stainless steel must be more than 18% chromium, more than 9% nickel, 1% titanium, food grade stainless steel is generally foreign grade 304 stainless steel, in line with the requirements of the domestic food industry.
J2 Chemical Composition: Carbon C:36 45, Silicon Si: 00, Manganese Mn: 00, Phosphorus P: 040, Sulfur S: 030, Chromium Cr:150 150, Nickel Ni: Charge 60, Molybdenum Mo:—, Nitrogen N:—, Copper Cu:—, Other Elements:—.
What is the difference between 420C and 420C Both 42 and 420C are grades of stainless steel materials, and their difference is in the chemical composition. 420C is an improved version of 42 that has a higher carbon content than 420 and is harder, but not as resistant to corrosion and wear as 420.