MAJOR QSB STEEL and APPLICATIONS No Steel Group Grade Description Applications 1 4140 Chromium, Molybdenum steel for applications requiring high tensile strength and toughness values, in particular in medium and large cross sections in the quenched and tempered condition. The Molybdenum additions prevent the steel from being susceptible to temper brittleness. rface hardenable steel. 4140 is the most commonly used of the high tensile steels with a wide range of applications in automotive, Gear and Engine construction, Crankshafts, Steering knuckles, Connecting rods, Spindles, Intermediate gears, Pump and Gear shafts. Axles, Nuts and Bolts. Quench and Tempered 2 Steel 4340 3 5140 Nickel, Chromium, Molybdenum steel for applications requiring high tensile strength and toughness values, particularly in large cross sections in the quenched and tempered condition. The addition of Molybdenum prevents the steel from being susceptible to temper brittleness. Higher tensile and yield strength than 4140. Chromium steel has good combination properties, high impact resistance at low temperature and good hardenability. Components for the aircraft, automotive and general engineering industries eg. propeller shafts, connecting rods, gear shafts, and other automobile parts. Heavy forgings, eg. Rotors, shafts, discs. After quenching and high temperature tempering treatment, 5140 can be used for intermediate speed parts, medium load parts,such as machine tool gear,shaft, rods. 4 Case Hardening Steel 8620 Low nickel chromium molybdenum medium hardenability, case hardening (carburizing) steel. Characterised by good core strength and toughness in small to medium sections with case hardness up to 62 HRc when carburized, hardened and tempered. It can also be used (uncarburised) as a high tensile steel, which when suitably hardened and tempered can be utilized for various applications requiring good tensile strength and reasonable toughness.pre hardened and tempered (uncarburized) 8620 can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content. 8620 (carburized) is used extensively by all industry sectors for light to medium stressed components and shafts requiring high surface wear resistance with reasonable core strength and impact properties. Arbors, Bearings, Bushings, Cam Shafts, Differential Pinions, Guide Pins, King Pins, Pistons Pins, Splined Shafts, Ratchets, Sleeves etc
42CrMo4 / 42CrMoS4 1.7225 / 1.7227 According to Standards EN 100833 C Si Mn P S 1) Cr Ni Mo Al V Nb Ti B Cu Sn 0,45 0,40 0,90 0,025 0,0 1,20 0,30 0,38 0,60 0,90 0,15 1) 42CrMoS4 için S: 0,020 0,040 arasındadır. SAE/AISI 4140 BS (EN) 708 M 40 (19C) DIN 42CrMo4 AFNOR 42 CD 4 UNI 42CrMo4. 241 Strength Kopma Kalınlık (mm) N/mm 2 N/mm 2 Joule t 8 900 1100 1300 10 40 8 < t 20 20 < t 60 60 < t 100 100 < t 160 750 650 550 500 1000 1200 900 1100 800 950 750 900 11 12 13 14 45 50 50 55 Hot Forg 850 1050 Ac1 Ac3 820 Ms 830 880 Mf 820 880 820 880 540 680 741 806 331 131 (HRc) HARDNESS verilen uçtan uzaklık (mm) 1,5 3 5 7 9 11 13 15 20 25 30 40 45 50 61 61 61 60 60 59 59 58 56 53 51 48 47 46 45 56 56 55 54 52 48 46 44 41 39 38 36 36 34
34CrNiMo6 1.6582 EN 100833 C Si Mn P S Cr Ni Mo Al V Nb Ti B Cu Sn 0,38 0,40 0,80 0,025 0,0 1,70 1,70 0,30 0,30 0,50 1,30 1,30 0,15 SAE/AISI BS DIN AFNOR UNI 4340 817M40 34CrNiMo6 NCD6 NiCrMo6 Strength 248 Kalınlık (mm) N/mm 2 N/mm 2 Kopma Joule t 8 1000 1200 1400 9 40 8 < t 20 20 < t 60 60 < t 100 100 < t 160 900 1100 1300 10 45 45 800 1000 1200 11 50 45 700 900 1100 12 55 45 600 800 950 13 55 45 Hot Forg 900 1100 650 680 860 870 860 600 650 715 770 320 100 (HRc) HARDNESS verilen uçtan uzaklık (mm) 1,5 3 5 7 9 11 13 15 20 25 30 40 45 50 58 58 58 58 57 57 57 57 57 57 57 57 57 57 57 50 50 50 50 49 48 48 48 48 47 47 47 46 45 44
41Cr4 / 41CrS4 1.70 / 1.7039 According to Standards EN 100833 C Si Mn P S 1) Cr Ni Mo Al V Nb Ti B Cu Sn 0,45 0,40 0,90 0,025 0,0 1,20 0,38 0,60 0,90 1) 41CrS4 için S: 0,020 0,040 arasındadır. SAE/AISI 5140 BS (EN) 530M40 DIN 41Cr4 AFNOR 42C4 UNI 41Cr4. 241 Strength Kalınlık (mm) N/mm 2 N/mm 2 Joule Kopma t 8 800 1000 1200 11 30 8 < t 20 660 900 1100 20 < t 60 560 800 950 12 14 40 Hot Forg 850 1100 Ac1 Ac3 810 850 Ms 850 880 Mf 820 860 820 860 540 680 750 790 310 110 (HRc) HARDNESS verilen uçtan uzaklık (mm) 1,5 3 5 7 9 11 13 15 20 25 30 40 45 50 61 61 60 59 58 56 54 52 46 42 40 38 37 36 53 52 50 47 41 37 34 32 29 26 23 21
20NiCrMo22 / 20NiCrMoS22 1.6523 / 1.6526 C Si Mn P S¹ Cr Ni Mo Al V Nb Ti B Cu Sn 0,23 0,40 0,95 0,025 0,0 0,70 0,70 0,25 0,17 0,65 0, 0,40 0,15 1) 20NiCrMoS22 için S: 0,020 0,040 arasındadır. SAE/AISI BS DIN AFNOR UNI 8620 805M20 21NiCrMo2 20NCD2 20NiCrMo2 Strength 212 Kalınlık (mm) N/mm 2 N/mm 2 Kopma Joule Hot Forg 900 1100 700 860 880 150 200 7 820 380 (HRc) HARDNESS verilen uçtan uzaklık (mm) 1,5 3 5 7 9 11 13 15 20 25 30 40 45 50 49 48 45 42 36 33 31 30 27 25 24 24 23 41 37 31 25 22 20
16MnCr5 / 16MnCrS5 1.7131 / 1.7139 C Si Mn P S 1) Cr Ni Mo Al V Nb Ti B Cu Sn 0,19 0,40 1,30 0,025 0,0 1,10 0,14 1,00 0,80 1) 16MnCrS5 için S: 0,020 0,040 arasındadır. SAE/AISI BS DIN AFNOR UNI 5115 16MnCr5 16MC 16MnCr5 Strength 230 207 138 187 10 100 Kopma Kalınlık (mm) N/mm 2 N/mm 2 0 560 720 15 25 Joule Hot Forg 850 1150 880 150 200 740 840 400 (HRc) HARDNESS verilen uçtan uzaklık (mm) 1,5 3 5 7 9 11 13 15 20 25 30 40 45 50 47 46 44 41 39 37 33 31 30 29 28 27 39 36 31 28 24 21
C10E / C10R 1.1121 / 1.1207 C Si Mn P S¹ Cr Ni Mo Al V Nb Ti B Cu Sn 0,13 0,40 0,60 0,0 0,0 0,07 0,30 1) C10R için S: 0,020 0,040 arasındadır. SAE/AISI BS ( EN ) DIN AFNOR UNI 1010 045M10 (C10E) Ck10 XC10 C10 Strength 131 85 140 Kopma Kalınlık (mm) N/mm 2 N/mm 2 Joule Hot Forg 850 1150 660 700 920 150 200 725 880 480 (HRc) HARDNESS verilen uçtan uzaklık (mm)
C15E / C15R 1.1141 / 1.1140 C Si Mn P S¹ Cr Ni Mo Al V Nb Ti B Cu Sn 0,18 0,40 0,60 0,0 0,0 0,12 0,30 1) C15R için S: 0,020 0,040 arasındadır. SAE/AISI EN DIN AFNOR UNI 1015 C15E Ck15 XC12 C15 Strength 143 95 150 Kopma Kalınlık (mm) N/mm 2 N/mm 2 Joule Hot Forg 850 1150 690 890 920 150 200 725 860 460 (HRc) HARDNESS verilen uçtan uzaklık (mm) 1 2 3 4 5 6 7 8 45 42 33 32 28 26 24 39 31 27 25 22 20
C16E / C16R 1.1148 / 1.1208 C Si Mn P S¹ Cr Ni Mo Al V Nb Ti B Cu Sn 0,18 0,40 0,60 0,0 0,0 0,12 0,30 1) C16R için S: 0,020 0,040 arasındadır. SAE/AISI EN BS AFNOR UNI 1015 C16E 080M15 XC18 C15 Strength 156 100 155 42 HRC Kopma Kalınlık (mm) N/mm 2 N/mm 2 Joule 850 1150 650 700 890 920 900 150 200 Hot Forg 725 850 450 (HRc) HARDNESS verilen uçtan uzaklık (mm)