Performance Characteristics:
High strength, high tenacity, good hardenability, and high resistance to thermal properties.
Applications:
Used for the important quenched and tempered parts which request high strengh , high toughness and large section size, such as the transmission of the horizontal forging machine eccentric shaft, forging crankshaft.It is also used for manufacturing big sized important quenched-and-tempered parts which request good toughness and high strength. such as top load shaft ,steam turbine shaft, vane, and heavy-load transmission parts, fastening piece, crankshaft, gears etc.
Chemical Composition(%):
C ：0.37～0.44 Si：0.17～0.37 Mn：0.50～0.80
S ：≤0.025 P ：≤0.025
Cr：0.60～0.90 Ni：1.25～1.65
Cu：≤0.025 Mo：0.15～0.25
