What are details of sup12 steel ? NameFerro alloy steel sup12 spring steel Features 1, chromium vanadium type spring steel; 2, good wear and abrasion resistance; 3, excellent toughness and shock resistance. Applications 1, widely used in the motor vehicle industry; 2, suitable for many general engineering applications; 3, crankshafts, steering knuckles, spindles, pumps and gears. Sizes Round bar Diameter(mm) Length(mm) Max 800 Max 9000 Plate Thickness(mm) Width(mm) Length(mm) Max 800 Max 2200 Max 9000 The above is our regular size, we also can provide customized sizes! Packing 20ft: gw 27t; (5.80mx2.13mx2.18m) 40ft: gw 27t; (11.8mx2.13mx2.18m) PriceThe price will change according to the weight of the steel you need. What are the chemical compositions? C Si Mn P S Cr Ni Cu 0.56-0.641.60-2.000.70-1.00 Â?¤0.025 Â?¤0.025 Â?¤0.35 Â?¤0.35 Â?¤0.35 Why can i believe your steel? 1, all products must pass the following quality tests to meet you requirments! 2, our steel has passed the following certificates! 3, providing all kinds of cutting service for you! 4, there are 50, 000 tons in our stock!