Ⅵ（KS）韩国
◤ 普通碳素钢：SS330 SS400 SS490 SS540
◤ 焊接结构用高屈服强度钢：SHY685 SHY685N SHY685NS 旧牌号：SHY70 SHY70N SHY70NS
◤ 耐候钢：SMA400AW SMA400BW SMA400CW SMA400AP SMA400BP SMA400CP SMA490AW SMA490BW SMA490CW SMA490AP SMA490BP SMA490CP SMA570W SMA570P 旧牌号：SMA41AW SMA41BW SMA41CW SMA41AP SMA41BP SMA41CP SMA49AW SMA49BW SMA49CW SMA49AP SMA49BP SMA49CP SMA58W SMA58P
◤ 碳素结构钢：SM9CK SM15CK SM20CK SM10C SM12C SM15C SM17C SM20C SM22C SM25C SM28C SM30C SM33C SM35C SM38C SM40C SM43C SM45C SM48C SM50C SM53C SM55C
◤ 合金结构钢：SCr415 SCr420 SCr430 SCr435 SCr440 SCr445 SNC236 SNC415 SNC631 SNC815 SNC836 SNCM220 SNCM240 SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815 SCM415 SCM418 SCM420 SCM421 SCM430 SCM432 SCM435 SCM440 SCM445 SCM822 SMn420 SMn433 SMn438 SMn443 SMnC420 SMn433 SMn438 SMn443 SMnC420 SMnC443 SACM645
◤ 淬透性结构钢：SCr415H SCr420H SCr430H SCr435H SCr440H SNC415H SNC631H SNC815H SNCM220H SNCM420H SCM415H SCM418H SCM420H SCM435H SCM440H SCM445H SCM822H SMn420H SMn433H SMn438H SMn443H SMnC420H SMnC443H 旧牌号：SCr21H SCr22H SCr2H SCr3H SCr4H SNC21H SNC2H SNC22H SNCM21H SNCM23H SCM21H SCM22H SCM3H SCM4H SCM5H SCM24H SMn21H SMn1H SMn2H SMn3H SMnC21H SMnC3H
◤ 易切削结构钢：SUM11 SUM12 SUN21 SUM22L SUM23 SUM23L SUM24L SUM25 SUM31 SUM31L SUM32 SUM41 SUM42 SUM43
◤ 冷镦用碳素钢：SWRCH6R SWRCH8R SWRCH10R SWRCH12R SWRCH15R SWRCH17R SWRCH6A SWRCH8A SWRCH10A SWRCH12A SWRCH15A SWRCH6A SWRCH18A SWRCH19A SWRCH20A SWRCH22A SWRCH10K SWRCH12K SWRCH15K SWRCH16K SWRCH17K SWRCH18K SWRCH20K SWRCH22K SWRCH24K SWRCH25K SWRCH27K SWRCH30K SWRCH33K SWRCH35K SWRCH38K SWRCH40K SWRCH41K SWRCH43K SWRCH45K SWRCH48K SWRCH50K
◤ 弹簧钢：SPS1 SPS3 SPS4 SPS5 SPS5A SPS6 SPS7 SPS8 SPS9
◤ 高碳铬轴承钢：STB1 STB2 STB3 STB4 STB5
◤ 铁塔用高强度钢：SH590P SH590S
◤ 压力容器用碳素钢：SPPV235 SPPV315 SPPV355 SPPV450 SPPV490 旧牌号：SPPV24 SPPV32 SPPV36 SPPV46 SPPV50
◤ 压力容器用高强度钢：SEV245 SEV295 SEV345 旧牌号：SEV25 SEV30 SEV35
◤ 低温压力容器用碳素钢：SLAl235 SLAl325 SLAl360
◤ 压力容器用合金钢：SCMV1 SCMV2 SCMV3 SCMV4 SCMV5 SCMV6
◤ 压力容器用碳素钢与含钼合金钢：SBB410 SBB450 SBB450M SBB480 SBB480M 旧牌号：SBB42 SBB46 SBB46M SBB49 SBB49M
◤ 热轧碳素钢：HRS1 HRS2 HRS3 HRS4
◤ 锅炉用合金钢：STHA12 STHA13 STHA20 STHA22 STHA23 STHA24 STHA25 STHA26
◤ 机械结构用碳素钢：STKM11A STKM12A STKM12B STKM12C STKM13A STKM13B STKM13C STKM14A STKM14B STKM14C STKM15A STKM15C STKM16A STKM16C STKM17A STKM17C STKM18A STKM18B STKM18C STKM19A STKM19C STKM20A 旧牌号：11A 12A 12B 12C 13A 13B 13C 14A 14B 14C 15A 15C 16A 16C 17A 17C 18A 18B 18C 19A 19C 20A
◤ 机械结构用合金钢：SCr420TK SCM415TK SCM418TK SCM420TK SCM430TK SCM435TK SCM440TK
◤ 低、中）碳素钢：MSWR6 MSWR8 MSWR10 MSWR12 MSWR15 MSWR17 MSWR20 MSWR22
◤ 高、中）碳素钢：HSWR27 SHWR32 HSWR37 HSWR42A HSWR42B HSWR47A HSWR47B HSWR52A HSWR52B HSWR57A HSWR57B HSWR62A HSWR62B HSWR67A HSWR67B HSWR72A HSWR72B HSWR77A HSWR77B HSWR82A HSWR82B