40Cr alloy structural steel with the GB/T 3077 standard

40Cr Alloy Steel Description

40Cr alloy steel is a medium carbon quenched and tempered alloy structural steel with high strength to weight ratio, excellent wear resistance and excellent corrosion resistance. 40Cr alloy steel is overheated to improve its strength and wear resistance, and is used in various applications, including automobile and motorcycle parts, construction equipment, engine parts and other industrial applications.

GB/T 40Cr alloy structural steel has high-strength, high toughness and good hardenability, and 40Cr steel is widely used to manufacture important parts with high strength, high toughness and high hardenability. 40CrMo alloy steel is used to manufacture important parts of various machines that bear high pressure and high speed rotation, such as gears, shafts, studs, screws, nuts, etc. 40CrMo alloy structural steel is also suitable for manufacturing various transmission parts subject to carbonitriding treatment, such as gears and shafts with large diameter and good low-temperature toughness.

40Cr alloy structural steel is subject to the GB/T 3077 standard. The tensile strength, yield strength and hardenability of 40Cr alloy structural steel are higher than those of 40 # steel, but the weldability is limited and there is a tendency to form cracks. It has the best comprehensive mechanical properties. 40Cr alloy steel is overheated to improve its strength and wear resistance. It is usually heated to 900-1020 ° C and then water quenched and tempered. This heat treatment process improves the strength and hardness of steel, and reduces its ductility and toughness.

40Cr Alloy Steel Datasheet

Thickness: 1.2-250mm (2-100mm usually used)
Width: 900-4200mm (1000-2200mm usually used)
Length: 5000-18000mm or as your request
Surface: Clean, finishing,blasting and painting according to customer requirement
Certificate: API, ISO, SGS, BV, CE etc
Quality: MTC will be provided with goods, third part inspection is acceptable

40Cr Alloy Steel Chemical composition

40Cr Alloy Steel Mechanical Properties

Equivalent Grade of 40Cr Alloy Steel