What Is the Grade of Common Steel, and How Is the Grade Divided?
60CrMnBA belongs to the national standard spring steel, the implementation of standards: GB/T 1222-2007
60CrMnBA spring steel has higher strength, plasticity, and toughness, good hardenability, overheating sensitivity is lower than manganese steel, higher than silicomanganese steel, decarburization tendency is smaller than silicomanganese steel, and tempering brittleness. Therefore, the appropriate tempering temperature and cooling rate should be selected; generally used in quenching and medium temperature tempering condition 60CrMnBA used in the vehicle, and tractor industry for the production of heavier loads, higher stress plate springs, and coil springs of larger diameter.
Common Steel
1.15CrMo — hot-strength steel Cr to improve high-temperature strength and high-temperature oxidation resistance
2.W18Cr4V – high-speed steel Cr improves hardenability
3.4Cr25Ni2O – possibly heat-resistant steel Cr improves high-temperature strength and high-temperature oxidation resistance
4.0Cr18Ni9 – austenitic stainless steel Cr to improve corrosion resistance
5.Cr12MoV – cold work die steel Cr improves wear resistance and hardenability
Alloy Element of Steel
1.1Cr18Ni9Ti (Ni-Ti) – austenitic stainless steel, can be used as a hot steel Ni to form a single-phase austenitic organization, improving corrosion resistance. Ti to form a stable carbide, anti-crystalline corrosion
2.40CrNiMo (Mo) – alloy tempering steel Mo refinement of the grain, improves the tempering resistance, anti-class II tempering brittleness
3.10MnPRe (P Re) – low alloy high strength structural steel P so that the steel has a certain degree of corrosion resistance Re to improve the performance of steel
4.9Mn2V (Mn V) – low alloy cutting tool steel, can be used as cold die steel Mn to improve the hardenability, strengthen the ferrite V refinement of the grain Improve the hardness and tempering stability, improve wear resistance
5.0Cr15Ni26MoTi2AlV (Ni-Al Ti)–Should be stainless steel Can be used as a hot steel Ni to form a single-phase austenitic organization and improve corrosion resistance. Ti to form a stable carbide, anti-corrosion intergranular corrosion Al to improve corrosion resistance
Corresponding to the National Standard GB/T20878-2007 in the 022Cr25Ni22Mo2N, Code S31053 This is a Duplex Stainless Steel.
No, it is ultra-low carbon, high chromium austenitic chromium-nickel stainless steel
O22Cr25Ni22Mo2N?
S31053
Executive standard: GB / T 20878-2007 stainless steel and heat-resistant steel grades and chemical composition
GB/T 24511-2017 Stainless steel plate and strip for pressurized equipment
GB/T 4237-2015 Stainless steel hot rolled steel plate and steel strip
NB/T 47010-2017 Stainless steel and heat-resistant steel forgings for pressurized equipment
Nomenclature of 40Mn2cr for the basis of automobile machinery
40Cr is the standard steel number of GB in China, and 40Cr steel is one of the most widely used steel in the machinery manufacturing industry. The tempering treatment has good comprehensive mechanical properties, good low-temperature impact toughness, and low-notch sensitivity. Steel hardenability is good, water quenching can be quenched to 28 ~ 60mm, and oil quenching can be quenched to 15 ~ 40mm. the steel in addition to tempering treatment is also suitable for cyanide and high frequency quenching treatment. Cutting performance is good, when the hardness of HB174 ~ 229, and the relative cutting and machinability of 60%. This steel is used to manufacture mechanical parts that bear medium loads and work at medium speeds after tempering.