| 
 序号  | 
 统一数字代号  | 
 牌号  | 
 化学成分,%  | 
|||||
| 
 C  | 
 Si  | 
 Mn  | 
 Cr  | 
 Ni  | 
 Cu  | 
|||
| 
 不大于  | 
||||||||
| 
 1  | 
 U20080  | 
 08F  | 
 0.05~0.11  | 
 ≤0.03  | 
 0.25~0.50  | 
 0.10  | 
 0.30  | 
 0.25  | 
| 
 2  | 
 U20100  | 
 10F  | 
 0.07~0.13  | 
 ≤0.07  | 
 0.25~0.50  | 
 0.15  | 
 0.30  | 
 0.25  | 
| 
 3  | 
 U20150  | 
 15F  | 
 0.12~0.18  | 
 ≤0.07  | 
 0.25~0.50  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 4  | 
 U20082  | 
 08  | 
 0.05~0.11  | 
 0.17~0.37  | 
 0.35~0.65  | 
 0.10  | 
 0.30  | 
 0.25  | 
| 
 5  | 
 U20102  | 
 10  | 
 0.07~0.13  | 
 0.17~0.37  | 
 0.35~0.65  | 
 0.15  | 
 0.30  | 
 0.25  | 
| 
 6  | 
 U20152  | 
 15  | 
 0.12~0.18  | 
 0.17~0.37  | 
 0.35~0.65  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 7  | 
 U20202  | 
 20  | 
 0.17~0.23  | 
 0.17~0.37  | 
 0.35~0.65  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 8  | 
 U20252  | 
 25  | 
 0.22~0.29  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 9  | 
 U20302  | 
 30  | 
 0.27~0.34  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 10  | 
 U20352  | 
 35  | 
 0.32~0.39  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 11  | 
 U20402  | 
 40  | 
 0.37~0.44  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 12  | 
 U20452  | 
 45  | 
 0.42~0.50  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 13  | 
 U20502  | 
 50  | 
 0.47~0.55  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 14  | 
 U20552  | 
 55  | 
 0.52~0.60  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 15  | 
 U20602  | 
 60  | 
 0.57~0.65  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 16  | 
 U20652  | 
 65  | 
 0.62~0.70  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 17  | 
 U20702  | 
 70  | 
 0.67~0.75  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 18  | 
 U20752  | 
 75  | 
 0.72~0.80  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 19  | 
 U20802  | 
 80  | 
 0.77~0.85  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 20  | 
 U20852  | 
 85  | 
 0.82~0.90  | 
 0.17~0.37  | 
 0.50~0.80  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 21  | 
 U21152  | 
 15Mn  | 
 0.12~0.18  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 22  | 
 U21202  | 
 20Mn  | 
 0.17~0.23  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 23  | 
 U21252  | 
 25Mn  | 
 0.22~0.29  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 24  | 
 U21302  | 
 30Mn  | 
 0.27~0.34  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 25  | 
 U21352  | 
 35Mn  | 
 0.32~0.39  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 26  | 
 U21402  | 
 40Mn  | 
 0.37~0.44  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 27  | 
 U21452  | 
 45Mn  | 
 0.42~0.50  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 28  | 
 U21502  | 
 50Mn  | 
 0.48~0.56  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 29  | 
 U21602  | 
 60Mn  | 
 0.57~0.65  | 
 0.17~0.37  | 
 0.70~1.00  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 30  | 
 U21652  | 
 65Mn  | 
 0.62~0.70  | 
 0.17~0.37  | 
 0.90~1.20  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 31  | 
 U21702  | 
 70Mn  | 
 0.67~0.75  | 
 0.17~0.37  | 
 0.90~1.20  | 
 0.25  | 
 0.30  | 
 0.25  | 
| 
 注:表1所列牌号为优质钢。如果是高级优质钢,在牌号后面加“A”(统一数字代号最后一位数字改为“3”);如果是特级优质钢,在牌号后面加“E”(统一数字代号最后一位数字改为“6”);对于沸腾钢,牌号后面为“F” (统一数字代号最后一位数字为“0”);对于半镇静钢,牌号后面为“b” (统一数字代号最后一位数字为“1”)  | 
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