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astm a193 grade b7 qt steel round bar

astm a193 grade b7 qt steel round bar

quenched and tempered steel round bar astm a193 grade b7  Alloy steel astm a193 grade b7 / aisi 4140 / sae 4140 / 42CrMo4 material is considered as the most suitable for botls and nuts to be used at temperature below 450 degree C, with a minimum effect on its structural strength during application at a high temperature.   Advantages of astmastm a193 grade b7 / aisi 4140 / sae 4140 / 42CrMo4 qt steel round bar for gr 10.9 bolts we supply:  1): Smooth surface: Smooth surface without any cracks or scales 2): Good straightness: 1mm for hot rolled + QT bars and 0.5mm for cold drawn +QT bars 3): Uniform microstructure and mechanical properties 4): Anti-rusty packages: two layers packages and load in cntainer in our factory in case rusty and package damage. 5): Fast delivery time: Within two weeks if there is stock, within one month to customize.   Detailed astm a193 grade b7 / aisi 4140 / sae 4140 / 42CrMo4 steel specificatio…