40CrMnMo7 Steel

 

This steel grade is known for its excellent combination of strength and toughness. It exhibits high tensile strength, enabling it to withstand heavy loads and mechanical stresses without undergoing significant deformation or failure. At the same time, its good toughness allows it to absorb energy and resist cracking, even in harsh working conditions. This unique blend of strength and toughness makes 40CrMnMo7 Steel suitable for a wide range of demanding applications, such as in the manufacturing of heavy machinery parts, gears, and shafts.

 

In addition to its mechanical properties, 40CrMnMo7 Steel also offers good hardenability. It can be easily hardened through appropriate heat treatment processes, allowing for the development of a hard and wear-resistant surface layer. This property is particularly beneficial in applications where the material is subjected to high levels of friction and abrasion, as it helps to extend the service life of the components.

 

Mechanical Properties

Properties		Conditions
		T (°C)	Treatment
Density (×1000 kg/m3)	7.7-8.03	25
Poisson's Ratio	0.27-0.30	25
Elastic Modulus (GPa)	190-210	25
Tensile Strength (Mpa)	1158	25	oil quenched, fine grained, tempered at 425°C
Yield Strength (Mpa)	1034
Elongation (%)	15
Reduction in Area (%)	53
Hardness (HB)	335	25	oil quenched, fine grained, tempered at 425°C

Thermal Properties

Properties		Conditions
		T (°C)	Treatment
Thermal Conductivity (W/m-K)	42.7	100
Specific Heat (J/kg-K)	477	50-100

 

 

The alloy composition of 40CrMnMo7 Steel includes chromium, manganese, and molybdenum, which contribute to its enhanced mechanical properties and other desirable characteristics. Chromium provides improved hardenability and corrosion resistance, while manganese enhances the steel's strength and toughness. Molybdenum further increases the strength and hardenability, as well as improves the high-temperature performance of the steel.

 

Furthermore, 40CrMnMo7 Steel has good fatigue resistance. It can withstand repeated loading and unloading cycles without experiencing premature failure, making it suitable for applications where the components are subjected to dynamic loads.

 

In the aerospace industry, 40CrMnMo7 Steel is used in the production of critical components such as landing gear parts and engine components. Its combination of strength, toughness, and fatigue resistance is essential for ensuring the safety and reliability of aircraft.

 

Why Choose Us?

We take pride in our ability to provide custom solutions for our customers' unique needs.

We analyze and compare the previous products and the current technical situation of our 40CrMnMo7 Steel, and develop new technical specifications and processes.

Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.

We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.

We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.

We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.

Our factory is committed to upholding the highest standards of safety and quality.

All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.

Our Cold-rolled Steel products are known for their durability and reliability.

Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

 

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