Within the chromium-molybdenum low-alloy steel family used in industrial manufacturing, 4130 steel and 4120 steel share the high strength and good toughness inherent in chromium and molybdenum. However, subtle differences in carbon content (4130 steel has a carbon content of 0.28-0.33%, while 4120 steel has a carbon content of 0.18-0.23%) have led to distinct [...]
In the field of high-strength alloy structural steels for industrial manufacturing, 4140 and 4142 steels are like twin brothers. Both belong to the Cr-Mo alloy structural steel family, and their excellent hardenability and toughness make them a popular choice for mechanical parts, molds, and shafts. However, they are not completely identical—a subtle difference in [...]
In applications such as heavy-duty machinery, wind turbine main shafts, and high-end automotive transmission systems, where stringent requirements for material strength, toughness, and fatigue life are crucial, 34CrNiMo6 and 30CrNiMo8 remain key candidates for engineers. While both are chromium-nickel-molybdenum structural alloy steels, subtle differences in the alloying element ratios lead to significant differences in [...]
In the fields of machinery manufacturing, automotive parts, and energy equipment, 4140, 4340, and 1045 steels are three widely used structural steels. They may seem similar, but they differ significantly in performance, cost, and application scenarios. Choosing the wrong material may lead to premature equipment failure, a surge in repair costs, or unnecessary material [...]
Air-hardened cold-working tool steel has become the first choice for many mold manufacturing companies due to its advantages of high hardness and small deformation after quenching in air.As representatives of American standards, A2 and A8 have won the trust of engineers and manufacturers with their excellent performance. Although they belong to the same category, [...]
The low temperature toughness of 4340 steel is significantly better than that of 4140 steel. Here is a detailed comparison and reason analysis: 1. Key Difference: Nickel Content 4140 steel: It is a medium carbon chromium-molybdenum steel. Its standard composition does not contain nickel, or the nickel content is very low (usually present as [...]
In the field of industrial manufacturing, the choice of steel is like the cornerstone of building precision machinery. Every slight difference in composition may reshape the performance boundaries of the final product. C35 steel and C40 steel, two medium-carbon steels that are only distinguished by slight differences in carbon content, show completely different characteristics [...]
In the selection of stainless steel materials, X20Cr13 and X30Cr13 often put engineers and purchasers in a dilemma. These two martensitic stainless steels have similar compositions and both have good corrosion resistance and mechanical properties, but the slight difference in carbon content creates significant differences in their hardness, toughness and application scenarios. Should we [...]
In the field of engineering materials, chromium-molybdenum steels (such as 4130 and 4140) have become key materials in industries such as aerospace, petrochemicals, and heavy machinery due to their excellent strength, toughness, and machinability. However, in high-temperature environments, 4140 steel often performs better than 4130 steel. What is the reason behind this difference? This [...]
Introduction In the fields of mechanical manufacturing, energy equipment and heavy industry, chromium-molybdenum alloy steels (such as 25CrMo4 and 42CrMo4) have become the preferred materials for key structural parts due to their excellent strength, toughness and high temperature resistance. However, as industrial technology upgrades to lightweight, high load and green manufacturing, material selection needs [...]
GCr15 (Chinese standard GCr15) and 52100 (American standard SAE 52100) are both high-carbon chromium bearing steels, widely used in bearings, precision machinery parts and other fields. The following is a comparative analysis from multiple dimensions: 1. Chemical Composition Comparison What are the main differences in the chemical composition of 52100 and GCr15 [...]
Below is a comprehensive comparison guide between 4140 steel and 4145 steel, based on key aspects such as chemical composition, mechanical properties, application areas and processing characteristics: 1. Chemical Composition Comparison What is the core difference between the chemical elements of 4140 and 4145 steel? 4145 steel has a higher carbon content [...]
The following is a comprehensive comparative analysis of 1045, C45 and S45C steels, covering key aspects such as chemical composition, mechanical properties, application areas, heat treatment characteristics and standard differences: 1.Chemical Composition Comparison Note: The carbon content of the three is similar, but the silicon content range of S45C is stricter, and [...]
The following is a detailed comparative analysis of 4140 steel, 42CrMo4 and SCM440 steel, covering chemical composition, mechanical properties, heat treatment, application scenarios and comprehensive material selection recommendations: 1. Comparison of Chemical Composition (according to international standards) Core differences: Cr content: 42CrMo4 and SCM440 have slightly higher chromium content than 4140 (improves [...]
As representatives of pre-hardened plastic mold steel, we will conduct a comprehensive comparison of 1.2311 steel, 1.2312 steel and 1.2738 steel in terms of chemical composition, mechanical properties, heat treatment process, processing performance, application areas, etc. The following is their precise comparative analysis based on the latest revised composition data and performance characteristics: 1. [...]