GB/T 3077 30CrMnSiA alloy steel plate is a medium carbon, high strength, poor welding performance. After tempering, GB/T 3077 30CrMnSiA alloy steel plate has high strength and sufficient toughness and hardenability.
ASTM 5130/ GB 30Cr Steel Round Bar is a kind of Alloy Structural Steel round bar, and it is widely used in making the small shaft, balance lever, rocker, rod, bolts, nuts, gears, and various rollers.
GB/T 3077 20Ni4Mo is a chinese grade of high hardenability and high strength cementation steel .If you need 20Ni4Mo steel round bar, or other grades,pleas e feel free to contact us.
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