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GB 18248 Seamless steel Pipe applied to gas cylinder, high pressure container

Publisher:TianchengTime:2018-07-08Number:73

GB 18248 Seamless steel Pipe applied to gas cylinder, high pressure container.

Chemical composition:

StandardGradeChemical composition
CSiMnP,SCuNiMoCrV

GB18248

37Mn0.34~0.400.10~0.301.35~1.65≤0.030≤0.20≤0.30/≤0.30/
34Mn2V0.30~0.370.17~0.371.40~1.75≤0.030≤0.20≤0.30/≤0.300.07~0.12
30CrMo0.26~0.340.17~0.370.40~0.70≤0.030≤0.20≤0.300.15~0.250.80~1.10/
35CrMo0.32~0.400.17~0.370.40~0.70≤0.030≤0.20≤0.300.15~0.250.80~1.10/

Mechanical properities:

StandardGradeTS(MPa)YS(MPa)Elongation(%)
GB 1824837Mn≥750≥630≥16
34Mn2V≥745≥530≥16
30CrMo≥930≥785≥12
35CrMo≥980≥835≥12


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