鋼號 | 化 學 成 分 % | ||||
C | Si | Mn | P | S | |
S 10 C | 0.08~0.13 | 0.15~0.35 | 0.30~0.60 | <0.030 | <0.035 |
S 12 C | 0.10~0.15 | ||||
S 15 C | 0.13~0.18 | ||||
S 17 C | 0.15~0.20 | ||||
S 20 C | 0.18~0.23 | ||||
S 22 C | 0.20~0.25 | ||||
S 25 C | 0.22~0.28 | ||||
S 28 C | 0.25~0.31 | 0.60~0.90 | |||
S 30 C | 0.27~0.33 | ||||
S 33 C | 0.30~0.36 | ||||
S 35 C | 0.32~0.38 | ||||
S 38 C | 0.35~0.41 | ||||
S 40 C | 0.37~0.43 | ||||
S 43 C | 0.40~0.46 | ||||
S 45 C | 0.42~0.48 | ||||
S 48 C | 0.45~0.51 | ||||
S 50 C | 0.47~0.53 | ||||
S 53 C | 0.50~0.56 | ||||
S 55 C | 0.52~0.58 | ||||
S 58 C | 0.55~0.61 | ||||
S 09 CK | 0.07~0.12 | 0.15~0.35 | 0.30~0.60 | <0.025 | <0.025 |
S 15 CK | 0.13~0.18 | ||||
S 20 CK | 0.18~0.23 |