Hot Rolled Steel For Boat
Cold rolled steel coil(CRC) is one kind of low carbon steel.It’s used widely.Induatrial includes all kinds of car,Website: products,truck,air plane,precision instrument and building material and so on.Cold rolled steel can be packaged in plate or coil.It’s easy to delivery and use.CRC’s feature are:1.Very strong durability,even the life time is more then galvanized steel.2.It’s not easy to change color when heart.3.The face is silver,tidy and stable.4.It’s easy to coating and processing performance5.Very good welding.TypeGradeChemical composition,%≤Yield strengthTensile strengthGermanyCMnPSTiAltReL/MpaRm/MpaCommonSt120.120.600.0450.045≥0.020130~280270~410DrawSt130.100.450.0350.035≥0.020120~240270~370DeepdrawSt140.080.400.0300.030≥0.020120~210270~350Special deep drawSt150.060.350.0250.025≥0.015110~180270~330Deeper drawSt160.020.250.0200.0200.30≥0.015≤170270~330Special deeper drawSt170.010.200.0200.0200.20≥0.015≤150250~310TypeGradeThickness（mm）/Elongation rate（L0=80mm，b=20mm）,%,≥Plastic strain ratioStrain hardening indexGermany＜0.40.4~＜0.60.6~＜1.01.0~＜1.6≥1.6r90n90CommonStDrawSt≥1.3DeepdrawSt≥1.6≥0.18Special deep drawSt≥1.9≥0.2Deeper drawSt≥2.1≥0.22Special deeper drawSt≥2.5≥0.23
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