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| CLASSIFICTION | REFERENCE SPEC | APPLICATIONS | ||||
|---|---|---|---|---|---|---|
| KS | JIS | AISI | Others | |||
| Structual Steel | Carbon Steel | SMxxC | SxxxC | 10xx | – | Shafts, gears, chains, bolts etc. |
| Alloy Steel | SCM440(4) SCM415(21) SNCM8 SNCM21 SACM645 |
SCM440 SCM415 SNCM439 SNCM220 SACM645 |
4140 – 4340 8620 – |
– | Shafts, gears, bolts nuts, pins, studs, keys, bits, cranks, transmissions, couplings, carns etc. |
|
| Bearing steel | STB2 | SUJ2 | 52100 | – | Bearing, shafts etc. | |
| Plastic Mould steel | HP1A① | S55Cmod | 1050 mod | KTSM21④ | mould base core&cavity bumper mould etc. |
|
| HP4A① | SCM440 mod | 4140 mod | KTSM31④ | |||
| HP4MA① | SNCM mod | P20 mod | KTSM3M④ | |||
| HP70① | – | – | CENA1② | high grade mould | ||
| – | – | – | HPM1② | |||
| HEMS1A① | SUS420J2 | 420 mod | HPM38① | Corrosion resistant precision Mould | ||
| – | MP15⑦ HR750④ | – | HIT75① | CD case, VTR sash ets. | ||
| – | HIPORAS④ | – | PORCERAXⅡ⑤ | Steel that allows air to go through | ||
| ULTRA HH(LH)⑦ | MOLDMAX③ | Plastic cosmatic, vessel,nozzle, etc. | ||||
| High Carbon Tool steel | STC3 | SK3 | W1 | – | tab gauges | |
| STC4 | SK4 | W1 | – | tab gauges | ||
| How sork Tool steel | STD61 | SKD61 | H13 | DAC③ | Extrusion dies, die-casting dies, hammer dies ram dies etc, |
|
| SKD61mod | DAC55③ FDAC③ | |||||
| STF4M① | SKT4 | L6 | DM③ | |||
| Cols Work Tool steel | STD11 | SKD11 | D2 | SLD③ | press dies, rolls, drawing dies, gauge etc | |
| STS3 | SKS3 | O1 | SGT③ | |||
| Flame Hardening steel | HFH1① KFHS1③ | HMD1 | – | – | Blanking&trimming dies | |
| High Speed Tool steel | SKH51 | SKH51 | M2 | YXM1③ | Reamer, end mill, hob
cutter, bite, drill. punch, tab, broach etc. |
|
| SKH55 | SKH55 | M35 | YXM42③ | |||
| SKH59 | SKH59 | M42 | YXM42③ | |||
| KCW1④ | YXR3③
YXR7③ YXR33③ |
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①DOOSAN ②DAIDO ③ITACHI ④KOBE ⑤ASSAB ⑥SeAH ⑦NGK