Grade: 20CrMnTi Standard: GB / T 3077-1999 ● Chemical Composition Carbon C: 0.17 ~ 0.23 Si Si: 0.17 ~ 0.37 Manganese Mn: 0.80 ~ 1.10 Sulfur S: to allow the residual content ≤0.035 Phosphorus P: to allow the residual content ≤0.035 Chromium Cr : 1.00 ~ 1.30 Ni: to allow the residual content ≤0.030 Copper Cu: allow the residual content ≤0.030 Titanium Ti: 0.04 ~ 0.10 ● Features and Scope: 20CrMnTi good performance carburizing steel, high hardenability, after carburizing After quenching with a hard, wear-resistant surface with a tough core part, with high and low temperature impact toughness, weldability moderate, good machinability after normalizing. For the manufacture of sectional <30mm to withstand high-speed, medium or heavy load, impact and friction of the important parts, such as gears, ring gear, pinion shaft crosshead. 20CrMnTi is hardened steel, hardened steel is usually a carbon content of 0.17% -0.24% of the low-carbon steel. Multi-purpose manufacturing automotive transmission gears. Is the hardenability carburizing steels Cr Mn Ti steel, the hardenability higher, to ensure hardenability case, with high strength and toughness, especially those with high and low temperature impact toughness .20CrMnTi case hardened steel handle Good workability, machining deformation small, anti-fatigue properties pretty good. for gears, shafts, piston type accessories. for automotive, aircraft parts special parts. 1, carbon structural steel: Q195-Q195F, Q195b, Q195 Q215-Q215AF, Q215Ab, Q215A, Q215BF, Q215Bb, Q215B Q235-Q235AF, Q235Ab, Q235A, Q235BF, Q235Bb, Q235B, Q235C, Q235D Q255-Q255A, Q255B Q275 -Q275 2, high strength low alloy structural steel: 1) Universal high strength low alloy structural steel grades composition Q295-Q295A, Q295B Q345-Q345A, Q345B, Q345C, Q345D, Q345E Q390-Q390A, Q390B, Q390C, Q390D, Q390E Q420 -Q420A, Q420B, Q420C, Q420D, Q420E Q460-Q460C, Q460D, Q460E 2) special high strength low alloy structural steel special low-alloy high strength structural steel commonly used alphabet letters on behalf of the yield point "Q", the yield point value (Unit To MPa), and said that according to product use in the rear plus the first letter of the alphabet. Such as: pressure vessel steel grade is expressed as "Q345R"; welding gas cylinder steel grade is expressed as "Q295HP"; boiler steel grade is expressed as "Q390g"; bridge steel grade is expressed as "Q420q" and so on. 3) high-quality carbon structural steel: 08F, 10F, 15F, 08,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,15Mn, 20Mn, 25Mn, 30Mn, 35Mn, 40Mn, 45Mn, 50Mn, 60Mn, 65Mn, 70Mn total of 31. 4, cutting structural steel: Y12, Y12Pb, Y15, Y15Pb, Y20, Y30, Y35, Y40Mn, Y45Ca 6, spring steel: 65,70,85,65Mn, 55Si2Mn, 55Si2MnB, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60 Su2CrA, 60Si2CrVA, 55CrMnA, 60CrMnA, 60CrMnMoA, 50CrVA, 60CrMnBA, 30W4Cr2VA 7, guaranteed hardenability structural steel: 45H, 20CrH, 40CrH, 45CrH, 40MnBH, 45MnBH, 20MnMoBH, 20M nVBH, 22MnVBH, 20MnTiBH, 20CrMnMoH, 20CrMnTiH, 20CrNi3H, 12Cr2Ni4H , 20CrNiMoH. 8, weathering steel welded structure: 16CuCr, 12MnCuCr, 15MnCuCr, 15MnCuCr-QT 9, high weather resistance of structural steel: 09CrPCrNi-A, 09CuPCrNi-B, 09CuP 10, Rolling Steel: GCr6, GCr9, GCr9SiMn, GCr15, GCr15SiMn of 5 grades. 11, no chromium bearing steel: GSiMnV, GSiMnVXt, GSiMnMoV, GSiMnMoVXt, GMnM oV, GMnMoVXt 12, carburizing bearing steel: G20CrMo, G20CrNiMo, G20CrNi2Mo, G20Cr2Ni4, G10CrNi3Mo, G20Cr2Mn2Mo 13, carbon tool steel: T7, T8, T8Mn, T9, T10, T11, T12, T13 14, alloy tool steel: 9SiCr, 8MnSi, Cr06, Cr2,9Cr2, W, 4CrW2Si, 5CrW2Si, 6CrW2Si, Cr12, C12Mo1V1, Cr12MoV, Cr5Mo1V, 9Mn2V, CrWMn, 9CrWMn, Cr4W2MoV, 6Cr4W3Mo2VNb , 6W6M o5Cr4V, 5CrMnMo, 5CrNiMo, 3Cr2W8V, 5Cr4Mo3SiMnVA1,3Cr3Mo3W2V, 5Cr4W5Mo2V, 8Cr3,4CrMnSiMoV, 4Cr3Mo3SiV, 4Cr5MoSiV, 4Cr5MoSiV1,4Cr5W2VSi, 7Mn15Cr2A13V2WMo, 3C r2Mo. 15, high-speed tool steel: W18Cr4V, W18Cr4VCo5, ??W18Cr4V2Co8, W12Cr4V5Co5, W6Mo5Cr4V2, CW6Mo5 Cr4V2, W6Mo5Cr4V3, CW6Mo5Cr4V3, W2Mo9Cr4V2, W6Mo5Cr4V2Co5, W7Mo4Cr4V2Co5, W2Mo9C r4VCo8, W9Mo3Cr4V, W6Mo5Cr4V2Al 16, stainless steel: chromium (Cr) to obtain the corrosion resistance of stainless steel The most basic element, usually containing chromium volume of more than 13%, some as high as about 30%. The main alloying elements nickel (Ni) is stainless steel, the content more up to about 20%. Specific grades are: 1Cr17Mn6Ni5N, 1Cr18Mn8Ni5N, 1Cr18Mn10Ni5Mo3N, 1Cr17Ni7,1Cr18Ni9, Y1 Cr18Ni9, Y1Cr18Ni9Se, 0Cr18Ni9,00Cr19Ni10,0Cr19Ni9N, 0Cr19Ni19NbN, 00Cr18Ni10N, 1Cr18Ni12,0Cr23Ni13,0Cr25Ni20,0Cr17Ni12Mo2, Cr18Ni12Mo2Ti, 0Cr18Ni12Mo2Ti, 00Cr17Ni14Mo2,0Cr17Ni12Mo2N, 00Cr17Ni13Mo2N, 0Cr18Ni12Mo2Cu2,00Cr18Ni14Mo2Cu2 , 0Cr19Ni13Mo3,00Cr19Ni13Mo3,1Cr18Ni12Mo3Ti, 0Cr18Ni12Mo3Ti, 0Cr18Ni16Mo5,1Cr 18Ni9Ti, 0Cr18Ni10Ti, 0Cr18Ni11Nb, 0Cr18Ni9Cu3,0Cr18Ni13Si4,0Cr26Ni5Mo2,1Cr18 Ni11Si4AlTi, 00Cr18Ni5Mo3Si2,0Cr13Al, 00Cr12,1Cr17, Y1Cr17,1Cr17Mo, 00Cr30Mo2,00Cr27Mo, 1Cr12,1Cr13,0Cr13,3Cr13 , Y3Cr13,3Cr13Mo, 4Cr13,1Cr17Ni2,7Cr17,8Cr17,9Cr18,11Cr17, Y11Cr17,9Cr18Mo, 9Cr18MoV, 0Cr17Ni4Cu4Nb, 0Cr17Ni7Al, 0 Cr15Ni7Mo2Al, 0Cr17Ni4Cu4Nb, 0Cr17Ni7Al, 0Cr15Ni7Mo2Al 17, heat-resistant steel: 5Cr21Mn9Ni4N, 2Cr21Ni12N, 2Cr23Ni13,2Cr23Ni20,1Cr15Ni35 , 0Cr15 Ni25 Ti2MoAlVB, 0Cr18Ni9,0Cr23Ni13,0Cr25Ni20,0Cr17Ni12Mo2,4Cr14Ni14W2Mo, 3Cr18Mn12Si2N, 2Cr20Mn9Ni2Si2N, 0Cr19Ni13Mo3,1Cr18Ni9Ti, 0Cr18Ni10Ti, 0Cr18Ni11Nb, 0Cr18Ni13Si4,1Cr20Ni14Si2,1Cr25Ni20Si2,2Cr25N, 0Cr13Al, 00Cr12,1Cr17,1Cr5 Mo, 4Cr9Si2,4Cr10Si2Mo, 8Cr20Si2Ni, 1Cr11MoV, 1Cr12Mo, 2Cr12MoVNbN, 1Cr12WMoV, 2Cr12NiMoWV, 1Cr13,1Cr13Mo, 2Cr13,1Cr17Ni2,1Cr11Ni2W2MoV, 0Cr17Ni4Cu4Nb, 0Cr1 7Ni7A ..................