1. What is the difference between the low temperature of 17-4PH material and stainless steel 304
1. 17-4PH is martensitic stainless steel, and 304 is austenitic stainless steel. 17-PH stainless steel (SS) is a precipitation-hardening martensitic stainless steel. Typical uses can be seen in applications that require high strength and moderate levels of corrosion resistance. The required strength and toughness can be controlled by the temperature range during the heat treatment process.
2. 17-4PH alloy has excellent corrosion resistance, which is better than any other hardenable stainless steel.
In most cases, it has the same good corrosion resistance as the Type 304. Despite this, stress corrosion can occur at high strengths; If there is a risk of stress corrosion cracking, the stabilization temperature needs to be adjusted.
3. Secondly, the physical properties are different, 17-4PH stainless steel has good corrosion resistance, heat resistance and high strength, and its hardness can reach 40-46HRC. Although 304 stainless steel has good corrosion resistance and toughness, its strength and hardness are relatively low, which cannot meet the needs of some special applications.
4. 17-4PH stainless steel has good wear resistance and strength, and can withstand high temperature and high pressure environment. Its heat treatment performance is also very good, and its properties can be adjusted by different heat treatment processes. For example, quenching can improve its hardness and strength, while aging can increase its corrosion resistance.
5. The difference between 17-4PH and 316L stainless steel strip is a popular choice for manufacturing stainless steel strip welded pipes and pipes. Some stainless steel products are made from two different grades of stainless steel, namely 17-4PH and 316L.
6. (17-7PH national standard 0cr17ni7al) is a kind of diffuse hardening stainless steel, high strength and high hardness, fatigue resistance, good corrosion resistance and forgeability, as well as high temperature and little deformation, this steel has good performance, especially suitable for aerospace fields, this special alloy is also suitable for other fields with high strength and corrosion resistance.
2. What is the difference between 17-4PH stainless steel round bar and 17-7PH bar?
1. 17-4PH is martensitic precipitation hardening stainless steel.
It has high strength, high hardness, good welding performance and corrosion resistance. It has been widely used in valves, shafts and chemical fiber industries and high-strength parts with certain corrosion resistance requirements. 17-4PH characteristics and scope of use: precipitation hardening steel grade with added copper.
2. ASTM304L 17-PH and 17-PH have the basic elements of carbon, chromium and nickel. The main difference between the two types of precipitation-hardened stainless steels is that nickel is replaced by molybdenum. 17-hour. This results in better creep, corrosion, high-temperature stress relief, and makes it softer. 17-PH。
3. Characteristics: 17-4PH has high strength, hardness, good welding performance and corrosion resistance. 17-4PH application range: used for high-strength parts with certain corrosion resistance requirements.
4. To sum up, although 17-4PH and 17-7PH are different in composition and performance, they are both precipitation-hardening stainless steel alloys, which have a wide range of application prospects in different fields and applications.
5. 17-7PH (SUS63 07Cr17Ni7Al/UNS S17700/AISI63 is an austenitic-martensitic precipitation hardened stainless steel developed on the basis of 18-8CrNi, also known as controlled phase change stainless steel.