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20mm HRC

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Description

ElementSpecificationC0.035 / 0.070P0.020 (Maximum)Mn0.16/0.26Si0.020 (Maximum)S0.020 (Maximum)Al (T)0.020 / 0.070N0.0065 (Maximum)Cu0.08 (Maximum)Ni0.08 (Maximum)Cr0.03 (Maximum)Sn0.02 (Maximum)Nb0.002 (Maximum)V0.005 (Maximum)End UseASTM A653 CSTypeGradeYield strengthTensile strengthChinaReL/MpaRm/MpaCommonDC01140~280270~410DrawDC03140~240270~370Deep drawDC04120~210270~350Special deep drawDC05120~180270~330Deeper drawDC06110~170270~330Special deeper drawDC07100~150250~310Nominal thicknessAllowable deviation of thickness at the following width (PT.A accuracy)The thickness of the following width allowed difference (PT.B accuracy)Notes≤1200＞1200~1500＞1500≤1200＞1200~1500＞1500≤0.40±0.04±0.05±0.06±0.025±0.035±0.0451.Allowable deviation of thickness for steel plate and strip with minimum yield strength < 280Mpa＞0.40~0.60±0.05±0.06±0.07±0.035±0.045±0.050＞0.60~0.80±0.06±0.07±0.08±0.040±0.050±0.0502.Minimum yield strength of 280~ 360MPa steel plate and steel strip thickness allowable deviation ratio of the specified value increased by 20%;＞0.80~1.00±0.07±0.08±0.09±0.045±0.060±0.060＞1.00~1.20±0.08±0.09±0.10±0.055±0.070±0.0703.The minimum yield strength >=360MPa steel sheet and strip thickness tolerance than the stated in the table 40% increased.＞1.20~1.60±0.10±0.11±0.11±0.070±0.080±0.080＞1.60~2.00±0.12±0.13±0.13±0.080±0.090±0.090＞2.00~2.50±0.14±0.15±0.15±0.100±0.110±0.110＞2.50~3.00±0.16±0.17±0.17±0.110±0.120±0.120＞3.00~4.00±0.17±0.19±0.19±0.140±0.150±0.150
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