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No, 4140 steel is not stainless steel. It is consistently classified as a medium-carbon low-alloy steel, specifically a chromium-molybdenum (Cr-Mo) alloy. What is stainless steel Stainless steel is a broad group of iron-based alloys primarily characterized by their enhanced corrosion resistance. This unique property is achieved by the addition of a minimum amount of chromium, […]

HSS primarily stands for High-Speed Steel or High-Speed Tool Steel. It is a crucial category of alloy steels predominantly used for creating engineering cutting tools. Definition and Primary Function High-Speed Steels (HSS) are a class of alloy steels specifically designed for applications requiring materials that can maintain their hardness and cutting edge even at elevated

4140 steel exhibits varying hardness levels under different conditions and treatment states. Generally speaking, the primary scenarios are as follows: As-Quenched Hardness, Quenched and Tempered Hardness, Annealed or Normalized Hardness, and Surface Hardened Hardness. What is 4140 steel? AISI 4140 steel is a medium alloy carbon steel. It is used in applications that require good

As a professional tool steel supplier, we will provide you with a detailed introduction to the specific characteristics of D2 tool steel and its applications in tool manufacturing. It is the most common type of high-carbon, high-chromium cold-work tool steel. Among all the tool steels we supply, D2 has the largest volume of supply, including

The core difference is this: D2 tool steel is your go-to for cold-work applications demanding superior abrasion resistance and excellent dimensional stability during heat treatment. M2 tool steel, on the other hand, is the champion for high-speed cutting operations where maintaining hardness at elevated temperatures (red hardness) is paramount.  As someone with over 15 years

When you’re looking at S7 tool steel and 4140 alloy steel, the most important thing to know right off the bat is that they are designed for fundamentally different jobs. If your application involves high shock or impact, like in many tooling operations, S7 is generally your go-to. If you need a versatile, strong steel

The fundamental difference between S7 and A2 tool steel is that S7 is engineered for excellent toughness and impact resistance, and A2 offers excellent wear resistance. In terms of classification, S7 belongs to impact-resistant steel among cold-work tool steels; A2 belongs to hardenable medium alloy cold-work steels. 1. Core Distinctions: S7 vs. A2 1.1 Toughness

When selecting materials for your tooling, it is important to understand the differences between grades like O1 and O2 tool steel. Both are common in the O-series of oil-hardening tool steels, but their characteristics can affect your manufacturing. The Bottom Line Up Front For factory managers and engineers comparing O1 and O2:  O1 tool steel is a well-documented,

A2 vs. O1 Tool Steel: Making the Right Choice | Aobo Steel Choosing between A2 and O1 tool steel for your operations is a common consideration, and the best answer depends on your specific application requirements. Generally, if minimizing distortion during heat treatment and achieving better toughness are top priorities, A2 is often the preferred

If you’re using D2 tool steel in your factory, you might be wondering if hardening is a necessary step. Let’s get directly to the answer. The Short Answer: Yes, D2 Steel Needs Hardening D2 steel must be hardened for nearly all tooling applications in a factory setting. It’s designed to be used in its hardened