What is A358 304 304L?

ASTM A358 A358M-2012 belongs to the American Standard "Standard for High-Temperature Equipment and General Electrofusion Welded Austenitic Chromium-Nickel Stainless Steel Tubing".

304L belongs to the American standard austenitic stainless steel, and the implementation standard: ASTM A358 A358M-2012

304L is a variant of 304 stainless steel with a lower carbon content and is used in applications where welding is required. The lower carbon content minimizes the precipitation of carbides in the heat-affected zone close to the weld, which can lead to intergranular corrosion (weld erosion) in stainless steel in certain environments.

The chemical composition of 304L stainless steel is shown below

304： 0cr18ni9

As a versatile steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical propertiesStamping, bending and other hot workability is good, no heat treatment hardening phenomenon (non-magnetic, use Wenzhu-196 800). Household goods such as tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), auto parts (windshield wipers, mufflers, moldings), medical appliances, building materials, chemicals, food industry, agriculture, ship parts.

304l: 00cr19ni10

As a low-C 304 steel, in the general state, its corrosion resistance is similar to that of 304 rigid, but after welding or stress relief, its resistance to grain boundaries.

Excellent corrosion ability;In the case of no heat treatment, it can also maintain good corrosion resistance, and the operating temperature is -196 800.

It is used in the chemical, coal, and petroleum industries with high requirements for grain boundary corrosion resistance, as well as heat-resistant parts for building materials and parts with difficult heat treatment.

There is a slight difference between 304 and 304L mainly in terms of carbon content, 304 is qualified if the carbon content is below, and 304L is qualified below. The lower the carbon content, the better the corrosion resistance, so the 304L is a little more expensive than the 304 one.

The 304 304L material should be processed with the American Standard 304 material, which can not only basically meet the chemical composition requirements of the two materials of 304 304L, but also meet the mechanical properties requirements of the two materials, otherwise the relevant requirements of the two materials cannot be met.

A358 304 304L is not a material, but the A358 standard is about 304 and 304L.

It is a double-grade steel, and the advantages of toughness and strength of the two are taken.

304 304L means 304 or 304L, whichever is the case.

<> is made of stainless steel, and the main components are carbon C is not higher, silicon Si is not higher, chromium, nickel and molybdenum. A351 is the ASTM standard number, the ASTM standard is divided into 15 categories, and the number of coils contained in each class is different, while A351CF8M is a stainless finger steel, CF8M is an American material casting, its corresponding forging is 316, and the corresponding Chinese license number is 0CR17NI12MO2, compared with China 0CR19NI9, the corrosion resistance will be better. A351 is a kind of stainless steel material, the main component is carbon C is not higher, silicon Si is not higher, chromium nickel molybdenum, stainless steel is the abbreviation of stainless acid resistant steel, air resistance only branch brother, steam, water and other weak corrosion media for stainless steel, and chemical corrosion resistant medium for acid resistant steel.

<>1 and A234 are American Standard pipe fittings, which are used for carbon steel elbows, tees, reducers, sail pipes, pipe caps, elbows and other products.

2. In the A234 standard, WPB, WP5, WP9, WP11, WP12, WP22, WP91 and other grades of carbon steel and alloy steel are included.

3. Nominal composition: C-mn-Si, which is low-carbon alloy steel. It is similar to Q345 and Q345R, which are equivalent to domestic FE-1-2 materials. Welding consumables for welding FE-1-2 groups E50 series welding consumables.

4. This is an American standard, there are many grades (grades) in ASTM A234, such as: WPB, WPC, WP11, WP12, WP22, WP91 and so on. It's not a locust material.

<> 304L is made of stainless steel, but the carbon content is lower than that of 304 stainless steel, and the carbides precipitated by this steel near the weld will be less, which can reduce intergranular corrosion, so its ability to resist intergranular corrosion is better than that of 304 stainless steel. The processing performance of 304L stainless steel is very good, and it also has good corrosion resistance and toughness, and its appearance and strength are far beyond other materials, which can be used to make some parts with high requirements for corrosion resistance and formability. For example, the production of open-air machines in the fields of chemicals, coal, stone stalls, liquids, and oil, as well as building materials and heat-resistant parts.

304L stainless steel, also known as ultra-low carbon stainless steel, is a general-purpose stainless steel material that is widely used in the manufacture of equipment and parts that require good overall performance (corrosion resistance and formability). 304L has a lower carbon content than 304 stainless steel, and this steel will precipitate less carbide near the weld, which can reduce intergranular corrosion, so the ability to resist intergranular corrosion is higher than that of 304 stainless steel. <

304L stainless steel, also known as ultra-low carbon stainless steel, is a general-purpose stainless steel material that is widely used in the manufacture of equipment and parts that require good overall performance (corrosion resistance and formability). 304L has a lower carbon content than 304 stainless steel, and this steel will precipitate less carbide near the weld, which can reduce intergranular corrosion, so the ability to resist intergranular corrosion is higher than that of 304 stainless steel.

What material is xx356 pro! Hello, glad to answer for you. The material of XX356 is aluminum alloy, and the material of XX356 is aluminum alloy.

Aluminum alloy is an alloy made of a variety of elements, including: silicon Si, iron trapped in Fe, copper Cu, manganese Mn, magnesium Mg, chromium Cr, zinc Zn, and Ti Ti. Aluminum and aluminum alloys can be melted in a variety of different ways.

Coreless and trough induction furnaces, crucible furnaces and reverberatory open-hearth furnaces (burning using natural gas or fuel oil) as well as resistance furnaces and electric radiant furnaces are commonly used. A wide range of charges can be used, from high-quality pre-alloyed ingots all the way to charges specifically constructed from low-grade scrap. Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical survey and aeronautical industries.

With the rapid development of the industrial economy, the demand for aluminum alloy welded structural parts is increasing, which makes the research on the weldability of aluminum alloy also deepen. At present, aluminum alloy is the most widely used alloy. Hope mine can help you!

Do you have any other questions?

1. A234 is the material of American standard pipe fittings, which is used for the material representation of carbon Qingling steel elbows, tees, reducers, pipe caps, elbows and other products.

2. In the A234 standard, WPB, WP5, WP9, WP11, WP12, WP22, WP91 and other carbon steels and alloy steel grades are included.

3. Nominal composition: C-mn-Si, which is low-carbon alloy steel. It is similar to the domestic Q345, Q345R, etc., and is equivalent to the domestic FE-1-2 material. Welding consumables for welding FE-1-2 groups E50 series welding consumables.

4. This is an American standard, and there are many types of grades (grades) in ASTM A234, such as: WPB, WPC, WP11, WP12, WP22, WP91 and so on. Not a material.

304L stainless steel is a versatile stainless steel material, which is widely used in the manufacture of equipment and parts that require good comprehensive properties (corrosion resistance and formability). Also known as ultra-low carbon stainless steel.

l Stainless steel chemical composition is (%)

c：≤ si ：≤mn ：≤cr ： ni ：，s ：≤p ：≤

l Mechanical properties of stainless steel:

Yield strength (n mm2) 205

Tensile strength 520

Elongation (%)40

Hardness: HB 187 HRB 90 HV 200 stainless steel rod.

Density g·cm-3

Specific heat c(20 ) J· (g·c)-1

Thermal conductivity w(m· ) 1 (at the following temperatures) 20 100 500

Linear expansion coefficient (10-6) between the following temperatures: 20 100 20 200 20 300 20 400 resistivity ·mm2·m-1

Melting point 1398 1420

Austenitic stainless steel, equivalent to 00cr19ni10 or 0cr18ni10 in China, the most common stainless steel, is commonly used to make household appliances and containers, and it is also heat-resistant steel, and our commonly used stainless steel kitchenware is made with it and 304. Stainless steel fasteners can also be made. Versatile.