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Chromium alloy steel grades and application

Posted:2021-03-24 09:48:46

15Cr alloy steel: It can be used for carburized parts with high working speed, small cross section and high toughness in the center, such as casing, crank pin, piston pin, piston ring, coupling, gear, camshaft and bearing ring with high working speed, screw for main engine of ship, small parts of locomotive, steam shaft ring, etc.

20Cr alloy steel: It is used to manufacture carburized parts with high strength in the center, wear on the surface, large size, complex shape and low load, such as gear, gear shaft, gear plug pin, worm ejector, etc. It can also be used to make quenching and tempering structural parts with high working speed and medium impact load.

30Cr steel: It can be used for important parts such as shaft, balance lever, rocker, connecting rod, bolt, nut, gear and various rollers under wear and heavy impact load. It can also be used for parts requiring surface hardening treatment.

35Cr steel: Used as shaft, spindle, roller, gear, etc.

40Cr 45Cr alloy steel: It is used for more important quenching and tempering parts, such as parts working under alternating load. After surface quenching, it can be used for parts with high wear resistance and no great impact, such as gear sleeve, shaft, crankshaft, pin, connecting rod, bolt, nut and inlet valve.

50Cr steel: It is used to bear heavy load and friction parts, such as hot rolled roller, reducer shaft, transmission shaft, support roll mandrel, thrust ring, tractor clutch gear, diesel engine connecting rod, bolt, tappet, high strength and wear-resistant gear on heavy mining machinery, oil film bearing sleeve, etc. It can also be used to make spring.