40Cr belongs to medium carbon quenched and tempered steel and cold heading die steel. The steel has moderate price and easy processing. After proper heat treatment, it can obtain certain toughness, plasticity and wear resistance. Normalizing can promote the refinement of the structure, close to the equilibrium state, and improve the cutting performance of the blank. When tempered at 550 ~ 570 ℃, the steel has the best comprehensive mechanical properties. The hardenability of the steel is higher than that of 45 steel, which is suitable for surface hardening treatment such as high frequency quenching and flame quenching. 40Cr shaft part is one of the typical parts often encountered in machine. It is mainly used to support transmission parts, transfer torque and bear load.

Standerd	GB ASTM ISO JIS DIN
Steel pipe grade	40cr 41Cr4 40X 5140 SCr440 530M40
Lengh	3-12m
Outer Diameter	32-756mm
wall thickness	2.5-100mm
Processing Service	Cutting or according to the customer's demand
Packaging Details	Bare packing/wooden case /waterproof cloth
Terms of Payment	T/T L/C at sight
20 feet container contains dimension	Length under 6000mm
40 feet container contains dimension	Length under 12000mm
Samples	Free samples are provided but the freight is paid by the buyer
Min order	1 Ton

C:0.37~0.44 Si:0.17~0.37 Mn:0.50~0.80 Cr:0.80~1.10 Ni:≤0.30  P:≤0.035  S:≤0.035  Cu:≤0.030  Mo:≤0.1040Cr and other alloy structural steels are suitable for shaft parts with medium precision and high speed. After quenching, tempering and quenching, these steels have better comprehensive mechanical properties. After quenching and tempering, this kind of steel is used to make mechanical parts which can bear medium load and medium speed, such as steering knuckle, rear half shaft of automobile, gear, shaft, worm, spline shaft and top sleeve of machine tool.1,Our company has a large number of inventory, can meet your needs in time.2, provide relevant information in time according to the customer's demand to ensure the quantity and quality of products.3、Relying on the country's largest steel market, one-stop with all the products you need to save costs for you.