1.Low Carbon Steel Wire Rod

JIS

Standard Chemical Composition (%) C Si Mn P S Cu SWRM 6 0.08 max. - 0.60 max. 0.045 max. 0.045 max. - SWRM 8 0.10 max. - 0.60 max. 0.045 max. 0.045 max. - SWRM 10 0.08~0.13 - 0.30~0.60 0.045 max. 0.045 max. - SWRM 12 0.10~0.15 - 0.30~0.60 0.045 max. 0.045 max. - SWRM 15 0.13~0.18 - 0.30~0.60 0.045 max. 0.045 max. - SWRM 17 0.15~0.20 - 0.30~0.60 0.045 max. 0.045 max. - SWRM 20 0.18~0.23 - 0.30~0.60 0.045 max. 0.045 max. - SWRM 22 0.20~0.25 - 0.30~0.60 0.045 max. 0.045 max. - Remark : In the case of killed steel, a "K" is added at the end of the code (for example, SWRM 10K).

SAE/AISI

SAE/AISI Chemical Composition (%) C Mn P S Si 1005 0.06 max. 0.35 max. 0.040 max. 0.050 max. - 1006 0.08 max. 0.25~0.40 0.040 max. 0.050 max. - 1008 0.10 max. 0.30~0.50 0.040 max. 0.050 max. - 1010 0.08~0.13 0.30~0.60 0.040 max. 0.050 max. - 1012 0.10~0.13 0.30~0.60 0.040 max. 0.050 max. - 1013 0.11~0.16 0.50~0.80 0.040 max. 0.050 max. - 1015 0.13~0.18 0.30~0.60 0.040 max. 0.050 max. - 1016 0.13~0.18 0.60~0.80 0.040 max. 0.050 max. - 1017 0.15~0.20 0.30~0.60 0.040 max. 0.050 max. - 1018 0.15~0.20 0.60~0.90 0.040 max. 0.050 max. - 1019 0.15~0.20 0.70~1.00 0.040 max. 0.050 max. - 1020 0.18~0.23 0.30~0.60 0.040 max. 0.050 max. - 1021 0.18~0.23 0.60~0.90 0.040 max. 0.050 max. - 1022 0.18~0.23 0.70~1.00 0.040 max. 0.050 max. - 1023 0.20~0.25 0.30~0.60 0.040 max. 0.050 max. - 1025 0.22~0.28 0.30~0.60 0.040 max. 0.050 max. - 1026 0.22~0.28 0.30~0.60 0.040 max. 0.050 max. -

2. High Carbon Steel Wire Rod

JIS

SAE/AISI Chemical Composition (%) C Si Mn P S SWRH 27 0.24~0.31 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 32 0.29~0.36 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 37 0.34~0.41 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 42A 0.39~0.46 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 42B 0.39~0.46 0.15~0.35 0.60~0.90 0.040 max. 0.040 max. SWRH 47A 0.44~0.51 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 47B 0.44~0.51 0.15~0.35 0.60~0.90 0.040 max. 0.040 max. SWRH 52A 0.49~0.56 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 52B 0.49~0.56 0.15~0.35 0.60~0.90 0.040 max. 0.040 max. SWRH 57A 0.54~0.61 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 57B 0.54~0.61 0.15~0.35 0.60~0.90 0.040 max. 0.040 max. SWRH 62A 0.59~0.66 0.15~0.35 0.30~0.60 0.040 max. 0.040 max. SWRH 62B 0.59~0.66 0.15~0.35 0.60~0.90 0.040 max. 0.040 max. SWRH 67A 0.64~0.71 0.15~0.35 0.30~0.60 0.040 max. 0.030 max. SWRH 67B 0.64~0.71 0.15~0.35 0.60~0.90 0.040 max. 0.030 max. SWRH 72A 0.69~0.76 0.15~0.35 0.30~0.60 0.040 max. 0.030 max. SWRH 72B 0.69~0.76 0.15~0.35 0.60~0.90 0.040 max. 0.030 max. SWRH 77A 0.74~0.81 0.15~0.35 0.30~0.60 0.040 max. 0.030 max. SWRH 77B 0.74~0.81 0.15~0.35 0.60~0.90 0.040 max. 0.030 max. SWRH 82A 0.79~0.86 0.15~0.35 0.30~0.60 0.040 max. 0.030 max. SWRH 82B 0.79~0.86 0.15~0.35 0.60~0.90 0.040 max. 0.030 max. Remark :If manufacturer and purchaser can reach an agreement, carbon content can be reduced by 0.01% either from the maximum or the minimum figures given in the above table.

SAE/AISI

SAE/AISI Chemical Composition (%) C Mn P S Si 1029 0.25~0.31 0.60~0.90 0.040 max. 0.050 max. 1030 0.28~0.34 0.60~0.90 0.040 max. 0.050 max. 1035 0.32~0.38 0.60~0.90 0.040 max. 0.050 max. 1037 0.35~0.38 0.70~1.00 0.040 max. 0.050 max. 1038 0.35~0.38 0.60~0.90 0.040 max. 0.050 max. 1039 0.37~0.42 0.70~1.00 0.040 max. 0.050 max. 1040 0.37~0.44 0.60~0.90 0.040 max. 0.050 max. 1042 0.40~0.47 0.60~0.90 0.040 max. 0.050 max. 1043 0.40~0.47 0.70~1.00 0.040 max. 0.050 max. 1044 0.43~0.50 0.30~0.60 0.040 max. 0.050 max. 1045 0.43~0.50 0.60~0.90 0.040 max. 0.050 max. 1046 0.43~0.50 0.70~1.00 0.040 max. 0.050 max. 0.10 max. 1049 0.46~0.53 0.60~0.90 0.040 max. 0.050 max. 0.07~0.15 1050 0.48~0.55 0.60~0.90 0.040 max. 0.050 max. 1053 0.48~0.55 0.70~1.00 0.040 max. 0.050 max. 0.10~0.20 1055 0.50~0.60 0.60~0.90 0.040 max. 0.050 max. 0.15~0.30 1059 0.55~0.65 0.50~0.80 0.040 max. 0.050 max. 1060 0.55~0.65 0.60~0.90 0.040 max. 0.050 max. 0.20~0.40 1064 0.60~0.70 0.50~0.80 0.040 max. 0.050 max. 0.30~0.60 1065 0.60~0.70 0.60~0.90 0.040 max. 0.050 max. 1069 0.65~0.75 0.40~0.70 0.040 max. 0.050 max. 1070 0.65~0.75 0.60~0.90 0.040 max. 0.050 max. 1074 0.70~0.80 0.50~0.80 0.040 max. 0.050 max. 1075 0.70~0.80 0.40~0.70 0.040 max. 0.050 max. 1078 0.72~0.85 0.30~0.60 0.040 max. 0.050 max. 1080 0.72~0.88 0.60~0.90 0.040 max. 0.050 max. 1084 0.80~0.93 0.60~0.90 0.040 max. 0.050 max. 1085 0.80~0.93 0.70~1.00 0.040 max. 0.050 max. 1086 0.80~0.93 0.30~0.50 0.040 max. 0.050 max. 1090 0.85~0.98 0.60~0.90 0.040 max. 0.050 max. 1095 0.90~1.03 0.30~0.50 0.040 max. 0.050 max.

3. Spring Steel Wire Rod

JIS

Standard Composition (%) C Si Mn P S Cr Others SUP 3 0.75~0.90 0.15~0.35 0.30~0.60 0.035 max. 0.035 max. - - SUP 6 0.56~0.64 1.50~1.80 0.70~1.00 0.035 max. 0.035 max. - - SUP 7 0.56~0.64 1.80~2.20 0.70~1.00 0.035 max. 0.035 max. - - SUP 8 0.52~0.60 0.15~0.35 0.65~0.95 0.035 max. 0.035 max. 0.65~0.95 - SUP 9A 0.56~0.64 0.15~0.35 0.70~1.00 0.035 max. 0.035 max. 0.70~1.00 - SUP 10 0.47~0.55 0.15~0.35 0.35~0.95 0.035 max. 0.035 max. 0.80~1.10 V:0.15~0.25 SUP 11A 0.56~0.64 0.15~0.35 0.70~1.00 0.035 max. 0.035 max. 0.70~1.00 B: 0.005 min. SUP 12 0.51~0.59 1.20~1.60 0.60~0.90 0.035 max. 0.035 max. 0.60~0.90 - SUP 13 0.56~0.64 0.15~0.35 0.15~1.00 0.035 max. 0.035 max. 0.70~0.90 Mo:0.25~0.35

4. Wire Rod for Bearing Steel

JIS

Standard Composition (%) C Si Mn P S Cr Mo Others SUP 1 0.95~1.10 0.15~0.35 0.50 max. 0.025 max. 0.025 max. 0.90~1.20 0.08 max. Cu : 0.20 max. Ni : 0.25 max. SUP 2 0.95~1.10 0.15~0.35 0.50 max. 0.025 max. 0.025 max. 1.30~1.60 0.08 max. SUP 3 0.95~1.10 0.40~0.70 0.90~1.15 0.025 max. 0.025 max. 0.90~1.20 0.08 max. SUP 4 0.95~1.10 0.15~0.35 0.50 max. 0.025 max. 0.025 max. 1.30~1.60 0.10~0.25 SUP 5 0.95~1.10 0.40~0.70 0.90~1.15 0.025 max. 0.025 max. 0.90~1.20 0.10~0.25

5.Carbon Steel Wire Rod for Cold Heading and Cold Forging

JIS

Standard Composition (%) C Si Mn P S Al SWRCH 6 A 0.08 max. 0.10 max. 0.60 max. 0.030 max. 0.030 max. 0.02 min. SWRCH 8 A 0.10 max. 0.10 max. 0.60 max. 0.030 max. 0.030 max. 0.02 min. SWRCH 10 A 0.08~0.13 0.10 max. 0.30~0.60 0.030 max. 0.030 max. 0.02 min. SWRCH 12 A 0.10~0.15 0.10 max. 0.30~0.60 0.030 max. 0.030 max. 0.02 min. SWRCH 15 A 0.13~0.18 0.10 max. 0.30~0.60 0.030 max. 0.030 max. 0.02 min. SWRCH 16 A 0.13~0.18 0.10 max. 0.60~0.90 0.030 max. 0.030 max. 0.02 min. SWRCH 18 A 0.15~0.20 0.10 max. 0.60~0.90 0.030 max. 0.030 max. 0.02 min. SWRCH 19 A 0.15~0.20 0.10 max. 0.70~1.00 0.030 max. 0.030 max. 0.02 min. SWRCH 20 A 0.18~0.23 0.10 max.