LKM Steel Rainbow Chart

Brand Material Grade Comparable Standard Delivered Hardness
(Surface)
Typical Analysis of Major Chemical Contents(%)
AISI JIS W.Nr HB HRC C Si Cr Ni Mn Mo V
  Lung Kee Special Steel
LKM P20M P20Modified - 1.2311 Modified 260 - 350 26 - 38 Undisclosed Undisclosed Undisclosed Undisclosed Undisclosed Undisclosed -
LKM2311 P20 - 1.2311 280-325 29 - 34 0.37 - 1.9 - 1.45 0.2 -
LKM738 P20Modified - 1.2738 290-330 30-35 0.37 0.2 2.0 1.0 1.1 0.25 -
LKM738H 330-370 35-40
LKM738 MH ES P20Modified ESR - 1.2738 Modified ESR 341-400 36-43 0.28 0.3 1.40 1.00 1.6 0.7 -
LKM838HS P20Modified - 1.2738 Modified 330-380 35-42 Patent Pending
LKM 808 ESR P21Modified ESR - - 360-415 38-44 0.1 - - 3.0 1.5 0.25 -
LKM2083 420 SUS420J2 1.2083 Annealed to HB 240(max) 0.43 - 13.0 - 0.3 Some -
LKM2083H 280-320 29-34
LKM2083 ESR 420 Modified ESR SUS420J2
Modified ESR
1.2083
Modified ESR
Annealed to HB 250(max) 0.38 0.9 13.0 - 0.5 - Some
LKM2316 - - 1.2316 Annealed to HB 250(max) 0.4 - 16.0 Some 0.5 1.0 -
LKM2316H 265-340 27-36
LKM2343 H11 SKD6 1.2343 Annealed to HB 229(max) 0.36 1.0 5.0 - 0.4 1.2 0.35
LKM2343 ESR H11 ESR SDK6 ESR 1.2343 ESR Annealed to HB 229(max) 0.36 1.0 5.0 - 0.4 1.2 0.35
LKM 2343M HH H13 Modified SDK61
Modified
1.2343
Modified
Prehardened to HRC 37-43 Please refer to the corresponding product datasheet
LKM2344 H13 SKD61 1.2344 Annealed to HB 229(max) 0.38 1.0 5.0 - 0.4 1.3 1.0
LKM2344 ESR H13 ESR SDK61 ESR 1.2344 ESR Annealed to HB 229(max)
LKM S7M S7M Modified - 1.2357
Modified
Annealed to HB 229(max) 0.5 <0.3 5.0 - <0.7 2.2
LKM C1100P JIS C1100P - Cu 99.95 Added