Table of contents
do you mean easy-to-passivate, or tipping, or something else? Please kindly provide real sample both new and old with best application result.

Comparison of material characteristics, tolerance range, hardness conversion, tolerance illustration, definition of roughness, And type of materials.
P1 P2 P3 P4 P5 P6 P7 P8 P9 P10
  (W/ hole) precision round bar, square solid tool
P11 P12 P13 P14 P15
  Profile fixture, cutting tool, wear-resistant parts.
P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28
  Helical fixture, special-shaped cutting tool, needle products.
P29 P30 P31 P32 P33
  (Brazing) profile fixture, cutting tool, wear-resistant parts, profile cutter.
P34 P35 P36 P37 P38 P39 P40
  Stainless high speed steel & carbide forming cutting tool, fixture series.
P41 P42 P43 P44 P45 P46 P47 P48 P49 P50 P51 P52 P53 P54
  Finish grinding/drilling/reaming/milling (compound) profile tooling series.
P55 P56 P57 P58 P59 P60
  Brazing & solid drilling/ reaming/ milling (compound) profile tooling series.
P61 P62 P63 P64 P65 P66 P67 P68 P69 P70 P71 P72 P73 P74 P75 P76 P77 P78 P79 P80 P81 P82 P83 P84 P85
  Crescent drills & drill reamers, rough mills, rotary burrs.
P86 P87 P88 P89
  Reference of form or regrinding of cemented carbide drill bits,Center drill bits, twist drill bits, carbide drill bits.
P90 P91 P92 P93P94 P95 P96 P97 P98 P99 P100 P101 P102 P103 P104 P105 P106 P107
  Reference of form or regrinding of finish reamer, ball nose end mill, Carbide end mill,(2-4flutes) end mill, R end mill
P108 P109 P110 P111 P112 P113 P114 P115 P116 P117 P118 P119 P120 P121 P122 P123 P124 P125 P126 P127 P128 P129 P130 P131 P132 P133
  Comparison of shank type, & steel standard.
P134 P135 P136 P137 P138
  Solid & brazing round knife, round milling cutter, regrinding and saw blade mill series
P139 P140 P141 P142 P143 P144 P145 P146 P147 P148 P149 P150 P151 P152 P153 P154 P155 P156 P157 P158 P159 P160 P161
  Brazing lathe tool, blade, brazing working, NC auto lathe tool, boring cutter, profile boring cutter series
P162 P163 P164 P165 P166 P167 P168 P169 P170 P171 P172 P173 P174 P175 P176 P177 P178 P179 P180 P181 P182 P183 P184 185
  Indexable (forming) tool, blade
P186 P187 P188 P189 P190 P191 P192 P193 P194 P195 P196 P197 P198 P199 P200 P201 P202 P203
  Calculation of CBN &PCD diamond tool, blade and & chip space, and turning
P204 P205 P206 P207 P208 P209 P210 P211 P212 P213 P214 P215 P216
  Jig, fixture, CNC complex forming milling cutter, cutter with milling-tooth, brazing hob
P217 P218 P219 P220 P221 P222 P223 P224 P225 P226 P227
  CNC super finish grinding (compound) profile die, Finish spindle & wear-resistant parts ,ejector pin
P228 P229 P230 P231 P232
  High quality SD/SDC diamond & CBN/CBNC grinding whee
P233 P234 P235 P236 P237 P238 P239 P240 P241 P242 P243 P244 P245 P246
LZQ is possessed of cutting-edge & comprehensiveproduction system, as well as rich producing & machining capability with different precision technology.
Considering continuous development of technology, above information is for reference only