Similar Steel Grade
| Division | SeAH CSS | SeAH Besteel | DOOSAN | JIS | AISI | Similar Grade |
| Plastic Mold Steel |
TP1 | TP1 | HP1A | S55C mod. |
1050 mod. |
KTSM21 |
| TP4 | TP4 | HP4A | SCM440 mod. |
4140 mod. |
DTSM31 | |
| TP4M | TP4M | HP4AM | SNCM mod. |
P20 mod. |
KTSM3M | |
| SMAT F | DP10 | NAK80 | ||||
| SMAT E | DPX1 | NAK-PRM/CENA G | P20 ESR | XPM ESR | ||
| SMAT V | HEMS-A1 | S-STAR | SUS420 mod. |
STAVAX |
| Division | Standards | ||||||||||||
| JIS | AISI | AICHI | KAWASAKI | KOBE | SANYO | SUMITOMO | DAIDO | KOSHUHA | HITACHI | MITSUBISHI | ASSAB | BOHLER | |
| Cold Work Tool Steel |
SK105 | W1-10 | SK3 | QK3 | YK3 | K3 | YC3 | K990 | |||||
| SKS93 | SK301 | QKSM | YK30 | K3M | YCS3 | ||||||||
| SKS3 | SKS3 | QKS3 | GOA | KS3 | SGT | K460 | |||||||
| SKD1 | D3 | SKD1 | QC1 | DC1 | KD1 | CRD | K100, K107 | ||||||
| SKD11 | D2 | SKD11 | QC11 | DC11 | KD11 | SLD | K105, K110 | ||||||
| SKD11 (改) |
AUD15 | QCM8 | DC53 | KD11S, KD21 | SLD8 | K340 | |||||||
| Alloy Tool Steel |
SKD61 | H13 | SKD61 | QD61 | DHA DHA1 |
KDA | DAC | HD21AX | W302 | ||||
| SKD61 (改) |
QDA61 | SDH3 SDH4 SDH43 SDH52 |
DHA2 DH21 |
KDA1 KDA1S |
DAC3 DAC10 |
||||||||
| DH31-S | KDA5 | KDA55 | |||||||||||
| SKD62 | H120 | SKD62 | QD62 | DH62 | KDB | DBC | W303 | ||||||
| SKT4 | SKT4A | QT41 | GFA | KTV | DM | HD13 HD13T |
W500 | ||||||
| SKT4(改) | AUD60 | QDT | SDH21 SDH23 |
GF78 | KTV2 | YHD28 | |||||||
| Fre-hardened Steel |
SC係 | 1055 | AUK1 | RSM55 | KTSM21 KTSM2A KTSM22 U2000 |
SD10 SD17 SD18 |
PDS1 PXZ |
KPM1 KPMAX |
|||||
| SCM係 | 4140 | AUK11 | SCM440 | KTSM31 KTSM3A U3000 |
SD61 | PDS3 | KPH25K | ||||||
| SCM(改) | P20 | KTSM3M | SD70 SD100 |
PX5 PX7 |
KPM30 | HPM2 HPM7 |
PLAMAX IMPAX |
M200 M201 M238 |
|||||
| SUS係 | 420 | S-STAR | 420M | HPM38 | STAVAX | M300 M310 M330 |
|||||||
| SUS係 (쾌삭) |
G-STAR | HPM77 | RAMAX-S | M314 | |||||||||
| SUS係 | S17400 | QSH6 | NAK101 | U630 | PSL | CORRAX | N700 | ||||||
| SKD61 (改) |
H13 | AUD61 | QD6F | DH2F | KDASS | FDAC | ORVAR-S | W302 | |||||
| P21 | KTSM40EF KTSM40E |
PCM40 | NAK55 NAK80 |
KAP65 KAP88 |
HPM1 HPM50 CENA1 |
M261 | |||||||
| Quenqing- Tempering Steel |
SKD11 (改) |
D2 | AUD11 | KDA181 (Fowder) |
QCM8 | PD613 | KD11 | HPM31 | SLEIPNER RIGOR CALMAX |
K105 K110 K340 |
|||
| SUS(係) 440C |
440C | KAS440 (Fowder) |
QPD5 SPC5 (Fowder) |
SUS440C DEX-P1 (Fowder) |
KSP2 | SUS440C ZDP282 (Fowder) |
ELMAX | M340 M390 |
|||||
| SUS(係) 420 |
S-STAR G-STAR |
KSP1 | HPM38 HPM77 |
R420 | STAVAX | M310 M330 |
|||||||
| Division | KS | JIS | AISI/SAE | DIN |
| Carbon Steel | SM10C | S10C | 1010 | CK10 / C10 |
| SM12C | S12C | 1012 | ||
| SM15C | S15C | 1015 | CK15 / C5 | |
| SM17C | S17C | 1017 | ||
| SM20C | S20C | 1020 | CK22 / C22 | |
| SM22C | S22C | 1023 | CK22 / C22 | |
| SM25C | S25C | 1025 | CK25 / C25 | |
| SM28C | S28C | 1029 | ||
| SM30C | S30C | 1030 | CK30 / C30 | |
| SM33C | S33C | |||
| SM35C | S35C | 1035 1037 |
CK35 / C35 | |
| SM38C | S38C | 1038 | ||
| SM40C | S40C | 1039 1040 |
CK40 / C40 | |
| SM43C | S43C | 1042 1043 |
||
| SM45C | S45C | 1045 1046 |
CK45 / C45 | |
| SM48C | S48C | |||
| SM50C | S50C | 1049 | CK50 / C50 | |
| SM53C | S53C | 1050 1053 |
||
| SM55C | S55C | 1055 | CK55 / C55 | |
| SM58C | S58C | 1060 | CK60 / C60 | |
| Alloy Steel | SCr415 (Scr21) |
Same as KS | ||
| SCr420 (SCr22) |
5120 | 20 Cr 4 | ||
| SCr430 (SCr2) |
5130 5132 |
34 Cr 4 | ||
| SCr435 (SCr3) |
5135 | 34 Cr 4 37 Cr 4 |
||
| SCr440 (SCr4) |
510 | 37 Cr 4 41 Cr 4 |
||
| SCr445 (SCr5) |
5147 | |||
| SCM415 (SCM21) |
||||
| SCM420 (SCM22) |
||||
| SCM421 (SCM23) |
||||
| SCM430 (SCM2) |
4130 | |||
| SCM435 (SCM3) |
4135 4137 |
34 CrMo 4 | ||
| SCM440 (SCM4) |
4140 4142 |
42 CrMo 4 | ||
| SCM445 (SCM5) |
4145 4147 |
|||
| SCM822 (SCM24) |
||||
| SNCM220 (SNCM21) |
8165 8617 8620 8622 |
|||
| SNCM420 (SNCM23) |
4320 | |||
| SNCM439 (SNCM8) |
4340 | |||
| SNCM447 (SNCM9) |
||||
| SNCM616 (SNCM26) |
||||
| SNCM630 (SNCM5) |
||||
| SCr415H (SCr21H) |
||||
| SCr420H (SCr22H) |
5120H | 20 Cr 4 | ||
| SCr430H (SCr2H) |
5130H 5132H |
34 Cr 4 | ||
| SCr435H (SCr3H) |
5135H | 34 Cr 4 37 Cr 4 |
||
| SCr440H (SCr4H) |
5140H | 37 Cr 4 41 Cr 4 |
||
| SCM415H (SCM21H) |
||||
| SCM420H (SCM22H) |
||||
| SCM435H (SCM3H) |
4135H 4137H |
34 CrMo 4 | ||
| SCM440H (SCM4H) |
4140H 4142H |
42 CrMo 4 | ||
| SCM445H (SCM5H) |
4145H 4147H |
|||
| SCM822H (SCM24H) |
||||
| SNCM220H (SNCM21H) |
8617H 8620H 8622H |
|||
| SNCM420H (SNCM23H) |
4320H | |||
| Spring Steel | SPS1 | SUP3 | 1075 1078 |
|
| SPS3 | SUP6 | |||
| SPS4 | SUP7 | 9260 | ||
| SPS5 | SUP9 | 5155 | 55 Cr 3 | |
| SPS5A | SUP9A | 5160 | ||
| SPS6 | SUP10 | 6150 | 50 CrV 4 | |
| SPS7 | SUP11A | 51B60 | ||
| SPS8 | SUP12 | 9254 | 54 SiCr 6 | |
| SPS9 | SUP13 | 4161 | ||
| Free Cutting Steel | SUM11 | Same as KS | 1110 | |
| SUM12 | 1108 | |||
| SUM21 | 1222 | |||
| SUM22 | 1213 | 9 SMn 28 | ||
| SUM22L | 12 L 13 | 9 SMnPb 28 | ||
| SUM23 | 1215 | |||
| SUM23L | ||||
| SUM24L | 12 L 14 | 9 SMnPb28 | ||
| SUM25 | 9 SMn 36 | |||
| SUM31 | 1117 | 15 S 10 | ||
| SUM31L | ||||
| SUM32 | ||||
| SUM41 | 1137 | |||
| SUM42 | 1141 | |||
| SUM43 | 1144 | |||
| Bearing Steel | STB1 | SUJ1 | 51100 | |
| STB2 | SUJ2 | 52100 | 100 Cr 6 | |
| STB3 | SUJ3 | (ASTM) A485 Grade-1 |
||
| STB4 | SUJ4 | |||
| STB5 | SUJ5 | |||
| Tool Steel | STD1 | SKD1 | D3 | X210Cr12 |
| STD11 | SKD11 | D2 | 1.2379 | |
| STD12 | SKD12 | A2 | ||
| STS4 | SKD4 | |||
| STD5 | SKD5 | H21 | ||
| STD6 | SKD6 | H11 | X38CrMoV51 | |
| STS61 | SKD61 | H13 | 1.2344 | |
| STD62 | SKD62 | H12 | ||
| STF4 | SKT4 | 55NiCrMoV6 | ||
| STS3 | SKS3 | |||
| STC3 | SK3 | W 1-10 | C 105 W 1 | |
| SKH51 | Same as KS | M2 | S 6-5-2 | |
| SKH55 | S 6-5-2-5 | |||
| SKH59 | M42 | S 2-10-1-8 | ||
| Stainless Steel | STS304 | SUS304 | 304 | X5CrNi1810 |
| STS304L | SUS304L | 304L | X2CrNi1911 | |
| STS316 | SUS316 | 316 | X5CrNiMo17122 | |
| STS316L | SUS316L | 316L | X5CrNiMo17132 | |
| STS420J2 | SUS420J2 | 420 | X30Cr13 | |
| STS440B | SUS440B | 440B | ||
| STS440C | SUS440C | 440C | ||
| STS430 | SUS430 | 430 | X6Cr17 | |
| STS630 | SUS630 | 630 |
