4140 (USA), 42CrMo4 (Europe), and SCM440 (Japan) all refer to low-alloy steels with a carbon content of approximately 0.40%, a chromium content of approximately 1.0%, and a molybdenum content of approximately 0.2%.They have a tensile strength of 900–1200 MPa in the quenched and tempered (Q&T) state and exhibit good fatigue resistance, impact toughness, and [...]
1.2311, 1.2312, and 1.2738 belong to the same series: pre-hardened chromium-manganese-molybdenum plastic mold steels with a hardness of 280-325 HB, which can be directly machined without further heat treatment.The practical differences come down to two alloy additions. 1.2312 adds sulfur to make machining faster. 1.2738 adds about 1% nickel to raise toughness and hardenability.1.2311, [...]
As oil & gas steel, 4130, 4140 and 4340 steel are widely used in the oil and gas industry, such as wellhead devices, Christmas tree equipment, and natural gas pipelines. In the previous article, we introduced in detail the difference between 4140 steel and 4340 steel.Here, we will continue to compare steel types with [...]
In the previous article, we compared the typical alloy steel representative steel grades in BS970 standard, EN19 vs EN24. Here, we continue to make a similar comparison between EN8 and EN9, the typical carbon steel grades in the BS970 standard.To be honest, this is meaningful and interesting work, so let's get started. 1.Chemical [...]
As two low-alloy structural steel grades under BS970 British Standard, EN19 and EN24 are widely used in various industries due to their excellent comprehensive properties. In the previous article, we compared 4140 vs 4340 under the American standard, and 42CrMo4 vs 34CrNiMo6 under the European standard.Then, as an equivalent grade,what is the difference between [...]
Why compare the two steel grades of 1045 and 41Cr4?Indeed, 1045 comes from American Standard, carbon steel, while 41Cr4 comes from European standard, alloy steel.It seems that there is no connection betweem them.But the fact is that they are widely used in the machinery manufacturing industry.Then we are interested to compare their differences. [...]
As low-alloy structural steels of European standard grades, 42CrMo4 and 34CrNiMo6 are widely used in various industries and play an incomparably important role due to their excellent performance. The equivalent grades of 42CrMo4 and 34CrNiMo6 are American Standard 4140 and 4340. We have introduced and compared 4140 and 4340 in the previous article ( [...]
Different from the traditional petroleum steel grades 4140, 4130 and 4340, 4145H and 4330V steels are more and more concerned and applied in the oil and gas industry due to their excellent performance. Where there is demand, there is a market, and where there is a market, there will be competition and choice. For [...]
As alloy steels, 4140 and 4340 steels are widely used in various industries, especially in the oil and gas industry, where they play an important role. As a veteran in the industry,we are confident that we know more about 4140 and 4340 than others.However, whenever customers come to ask them for some details, we [...]
When it comes to hot work tool steel, American Standard H13 steel is what flashes through our minds, which is indeed too popular.Similarly, SKD61 steel, a hot work tool steel belonging to the Japanese standard, is also quite practical in the Southeast Asian market. Therefore, as a typical representative of hot work tool steel, [...]