System Chart Index by ISO 513 Classification CUTTING TAPS FORMING TAPS Intro W.-NR DIN AISI-ASTM TRADE MARK SYSTEM CHART SP 3.0505 AlMn0,5Mg0,53.3206AlMgSi0.53.4365AlZn5.5MgCu31057075Anticorodal 063Ergal36 - 37 38 - 39 44 44 N1 SL 3.2382 G-AlSi12 A413.23.5103G-MgSe3Zn2Zr1AMS 4442- 36 - 37 38 - 39 44 44 N2 2.0060 E-Cu572.0321CuZn37 - - 36 - 37 38 - 39 44 44 N3 PO 2.0530 CuZn38Sn1 2.0220 CuZn5 2.0401 CuZn39Pb3 -2.1020CuSn6 OT-58 36 - 37 38 - 39 44 44 N4 ST - 36 - 37 38 - 39 44 44 N5 ROLL - 36 - 37 38 - 39 44 44 N6 CARBIDE 2.4856 NiCr17Mo17FewNiCr19Fe19NbMo - Hastelloy C (casting)Inconel 625 (casting)4040 - - S1 LONG 2.4856 NiCr22Mo9Nb2.4668NiCr19Fe19NbMo- Inconel 625 (forged)Inconel 718 (casting)4040 - - S2 2.4654 NiCr20Co14MoTi2.4668NiCr19Fe19NbMo- Waspalloy (forged)Inconel 718 (forged)4040 - - S3 HANDTAPS 3.7055 TiAl2Sn4Zr2MoSiTi 99,6 265-G1265-G3 Grade 1Grade 3 40 40 - - S4 EG (STI) 3.7164 TiAl6V4 - Grade 5 40 40 - - S5 SPECIAL THREADS, GAUGES 1.7131 16 MnCr 5 5115 - 41 41 - - H1 THREAD MILLS 1.3505 100 Cr 6 52100 - 41 41 - - H2 DIES CENTER DRILLS Technical info 25