21CrMoV5-7 hardness // 38CrSi Ingredients Dongguan price == 21CrMoV5-7 chemical composition: Carbon C: 0.17 ~ 0.25 Si Si: ≤0.40 Mn Mn: 0.40 ~ 0.80 Sulfur S: ≤0.030 Phosphorus P: ≤0.025 Chromium Cr: 1.20-1.50; Mo Mo: 0.55-0.80; Ni-Ni: ≤0.60; vanadium V: 0.20-0.35; aluminum Al: The main alloying elements ≤0.03 steel alloying elements are silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, and rare earth. Wherein the vanadium, titanium, niobium, zirconium and other strong carbide forming elements in the steel, as long as there is enough carbon, under appropriate conditions, can form their own carbide, when the lack of carbon or at elevated temperatures, places atom state into solid solution; manganese, chromium, tungsten, molybdenum carbide forming elements, some of which atomic state into solid solution, the other part of the formation of substitutional alloy cementite; aluminum, copper, nickel, cobalt, silicon is not formed carbide elements, generally atomic state in the solid solution. Category 1, according to the content of alloying elements in points 1) the total amount of low-alloy steel alloying elements is less than or equal to 5%; 2) the total content of alloying elements in steel between 5% to 10%; 3) the total amount of high-alloy steel alloying elements greater than or equal to 10%; 2, divided by type of alloying elements chromium steel, manganese steel, chrome-nickel steel, silico-manganese molybdenum vanadium steel. 3, according to the main purpose sub (1) structural steel 1) Construction and engineering with structural steel 2) Mechanical manufacturing structural steel (2) Tool steel (3) Special properties of steel [Gabriel billion Metal] - >> 40Mn 45Mn 50Mn 60Mn 65Mn [Gabriel billion Metal] - >> 70Mn 1080 1084 1085 1016 1019 [Gabriel billion Metal] - >> DT4C, DT8, DT8A, DT8E, DT8C [Gabriel billion Metal] - >> 30CrMnTi, 38CrMoAL , W18, W9 billion Metal [Gabriel] - >> C25M2 C30E4 C30M2 C35E4 [Gabriel billion Metal] - >> H13,3Cr2W8V, W18Cr4V, T8A [Gabriel billion Metal] - >> HARDOX400 HARDOX450 HARDOX500 HARDOX550 HARDOX600 [Gabriel billion Metal] - >> 60Si2CrA 60Si2CrVA 55SiCrA 55CrMnA 60CrMnA 50CrVA billion Metal [Gabriel] - >> SMn420, SMn433, SMn438, SMn443, SCr415, SCr420 [Gabriel billion Metal] - >> 51CrV4 52CrMoV4 52SiCrNi5 54SiCr6 54SiCrV6 billion Metal [Gabriel] - >> SUP9 SUP9A SUP10 SUP11A SUP12 SUP13 S50C-CSP [Gabriel billion Metal] - >> T9A T10A T11A T12A T7A T13A T8A billion Metal [Gabriel] - >> G20CrNiMo G20CrNi2Mo G20Cr2Ni4 G10CrNi3Mo billion Metal [Gabriel] - >> 100Cr2, 105Cr4, 100Cr6, 100CrMn6, [Gabriel billion Metal] - >> SWRCH6R SWRCH8R SWRCH10R SWRCH12R SWRCH15R SWRCH17R billion Metal [Gabriel] - >> C2C C4C C8C C10C C15C C17C C20C 8MnSi7ML04Al ML08Al ML10Al ML15Al ML15 ML20Al billion Metal [Gabriel] - >> ML04Al ML08Al ML10Al ML15Al ML15 ML20Al sales unit: Gabriel billion Metal Materials Co., Ltd. Suzhou shipping address: China / Jiangsu / Suzhou Industrial Park Weiting Industry Square Business Fax: 0512-69233015 Business Phone: 0512-65914015 responsible for the product: Huang Pengfei: 13270975042 Customer Service Online: QQ 7908645