  According to standards Number            max max max 0,140,19 0,40 1,001,30 0,025 0,035 ± 0.02 + 0.03 ± 0.05 + 0.005 + 0.005 16MnCrS5 n° 1.7139 S% 0.0200.040 product deviation ± 0.005% On request, this steel grade can be supplied with addition of lead (Pb) 0.150.35%   1150850   650700 furnace cooling   880 air (HB 138187)   870 furnace cooling to 650, then air   860900 oilpolymer salt bath   730750 furnace cooling 50 °C/h to 680, pause, cooling to 400 then air 750930 gas   870 water (HB max 207) (HB 156207) (HB 140187)   9501000 quick cooling to 630650, stop according to the thickness of the material, then air (HB 140187)  TECHNICAL CARD GRUPPO LUCEFIN  REVISION 2014  ALL RIGHTS RESERVED   0,801,10 ± 0.05 Product deviations are allowed      880980 810840 oil 150 polymer salt 200 bath (160250 °C)    welding must be carried out on the annealed state and before carburizing 150350 600 furnace cooling   *core **carburizing surface 740 840 400* 200**   600620 (HB max 230)  values obtained on test blanks after  + stressrelieving UNI 7846: 1978. Use only as reference size Testing at room temperature (longitudinal) mm  0.2 % %    test blanks N/mm2 N/mm2 min. min. min. J min.   11 10301370 735 8 25  30 7401030 490 9 25  for information only 63 640930 440 10 25  for information only Hotrolled natural state. experience sizemm  0.2 N/mm2 N/mm2 min. from 10 to 100 560720 350 % min. 15 % min. 25  J min.  max 207 values at room temperature on rounds of Ø 10 mm after quenching at 870 °C in oil   390 385 385 385 385 381 376 362 348 319   42 41.5 41.5 41.5 41.5 41 40.5 39 37.5 34  N/mm2 1340 1335 1330 1330 1320 1300 1260 1210 1150 1050 0.2 N/mm2 1020 1060 1110 1140 1145 1140 1110 1070 1010 930  % 12.0 12.5 12.5 12.5 12.0 12.0 12.5 13.0 14.0 15.5  % 52.0 52.0 53.0 54.0 55.0 57.0 59.0 61.0 63.0 64.0  J 42 46 46 45 42 40 42 62 90 124 carburizing 64 63 62 60.5 59 57 Tempering at           286 30 950 830 17.5 68.0 135 240 22.5 800 710 20.0 72.0 155 213 200 700 620 23.0 75.0 180 650 560 25.5     194 1.7139 EN 102774: 2008 sizemm   Soft annealing +A +SH  +SL   max Soft annealing Heat treatment +FP +SH +A +C for pearlite / ferrite structure   from to  max  5 a) 10 260 10 16 250 16 40 207 245 140187 40 63 207 240 140187 63 100 207 240 140187  for thickness < 5 mm, hardness values should be agreed before order placement Heat treatment +FP +C for pearlite / ferrite structure   140240 140235 140235 UNI 8550: 1984. Use only as reference sizemm Testing at room temperature   0.2   from to N/mm2 N/mm2 min min (L) J min (L) 11 10301375 735 8 25 11 25 7851080 540 9 30 25 50 685930 490 10 30 Mechanical properties obtained on test blanks after core hardening + stressrelieving L = longitudinal EN 10084: 2008 grain size G 5 min. mm distance from quenched end        39 47 42 47 39 44   36 46 39 46 36 43 31 44 35 44 31 40  28 41 32 41 28 37  24 39 29 39 24 34  21 37 26 37 21 32             35 24 35 33 22 33 31 20 31 30 29 28 27 30 29 28 27 30 28 26    16MnCr5 16MnCr5 15CrMn 16MnCr5 GB  normal   UNI   25 24 23 ►  11.1 12.1 12.9 13.5 106● K1 long. GPa 210 tang. GPa 80  J/(Kg●K) 460  W/(m●K) 41  Kg/dm3 7.85  Ohm●mm2/m 0.16  Siemens●m/mm2 6.25        The symbol ►indicates temperature between 20 °C and 100 °C, 20 °C and 200 °C … EN  DIN  AFNOR 16MC 13.9   B.S. 22   GOST 16HG  AISI/SAE 5115 Structure of hotrolled annealed steel (+A) and subsequently colddrawn (+C) x1000 The data contained herein are intended as reference only and are subject to constant change. Lucefin s.P.A. Disclaims any and all liability for any consequences that may result from their use.