GB/T 3077 30CrMnSiA alloy steel plate on sale

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.  KUNFENG is the supplier of GB/T 3077 30CrMnSiA alloy steel plate. KUNFENG is a good choice if you are looking for GB/T 3077 30CrMnSiA alloy steel plate supplier. The bellow is the detail information of GB/T 3077 30CrMnSiA alloy steel plate KUNFENG supplied for your reference.

The application of GB/T 3077 30CrMnSiA alloy steel plate

After conditioning, the material can be used as a grinding wheel shaft, gear, and sprocket. GB/T 3077 30CrMnSiA alloy steel plate has good processability,  small processing distortion, and very good fatigue resistance. For shafts, pistons and other parts. For cars, aircraft, a variety of special wear-resistant parts and so on.

GB/T 3077 30CrMnSiA alloy steel plate chemical composition

Carbon C: 0.28 to 0.34
Silicon Si: 0.90 to 1.20
30crmnsia round steel
30crmnsia round bar [1]
Manganese Mn: 0.80 to 1.10
Sulfur S: Permissible residual content ≤ 0.025
Phosphorus P: Permissible residual content ≤ 0.025
Chrome Cr: 0.80 to 1.10
Nickel Ni: Permissible residual content ≤ 0.030
Copper Cu: Permissible residual content ≤ 0.025 [2]

GB/T 3077 30CrMnSiA alloy steel plate Mechanical properties

Tensile strength σb (MPa): ≥1080(110)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥10
30CrMnSiA alloy structure round steel
30CrMnSiA alloy structure round steel
Section shrinkage ψ (%): ≥45
Impact work Akv (J): ≥39
Impact toughness value αkv (J/cm²): ≥49(5)
Hardness :≤229HB
Specimen size: The blank size of the sample is 25mm

GB/T 3077 30CrMnSiA alloy steel plate Heat Treatment Specification and Metallographic Organization

Heat treatment specification: quenched 880°C, oil cooled; tempered 540°C, water cooled, oil cooled.

GB/T 3077 30CrMnSiA alloy steel plate delivery status

For heat treatment (normalizing, annealing or high-temperature tempering) or for delivery without heat treatment, the delivery status shall be stated in the contract.
GB/T 3077 30CrMnSiA alloy steel plate has high strength, but it belongs to medium-carbon quenched and tempered steel and has a large hardenability, so the welding performance is very poor.GB/T 3077 30CrMnSiA alloy steel plate has high strength and sufficient toughness after quenching and tempering, and also has good hardenability. After conditioning, GB/T 3077 30CrMnSiA alloy steel plate can be used as a grinding wheel shaft, gear, and sprocket. If you do a tool, roughing becomes a tool shape. Carbide milling cutters are used to mill the cutting edges and polished by a polishing machine. Surface roughness up to 3.2 should be no problem. GB/T 3077 30CrMnSiA alloy steel plate is darker in color and galvanized is not just for beauty, but also for rust prevention.