A.錳的平均質(zhì)量分?jǐn)?shù)是0.60%B.碳的平均質(zhì)量分?jǐn)?shù)是6.0%C.碳的平均質(zhì)量分?jǐn)?shù)是0.60%D.錳的平均質(zhì)量分?jǐn)?shù)是6.0%
A.Q235B.16MnC.40CrD.T8
A.碳的平均質(zhì)量分?jǐn)?shù)為3%B.伸長率大于等于3%C.伸長率大于等于3D.碳的平均質(zhì)量分?jǐn)?shù)為0.3%