Physical properties of 0Cr18Ni9 (AISI304) and 00Cr19Ni10 (AISI304L)

大纲 物理性能 Introduction

The 0Cr18Ni9 (AISI 304) and 00Cr19Ni10 (AISI 304L) are two varieties of stainless steel. Both of these stainless steel grades belong to the 300-series of stainless steel which contain chromium and nickel as their major alloying elements. They are known for their good formability, weldability, and resistance to corrosion, making them highly suitable for a variety of construction and engineering applications. In this paper, we will discuss the physical properties of 0Cr18Ni9 (AISI 304) and 00Cr19Ni10 (AISI 304L).

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Physical Properties of 0Cr18Ni9 (AISI 304)

1. Chemical Composition

The chemical composition of 0Cr18Ni9 (AISI 304) is as follows:

• Carbon (C): 0.08% max

• Chromium (Cr): 17-19%

• Nickel (Ni): 9-10.5%

• Iron (Fe): Balance

2. Accommodation/Formability

0Cr18Ni9 (AISI 304) offers excellent formability and can be easily bent, rolled, or welded into many complex shapes. This feature makes 0Cr18Ni9 (AISI 304) an ideal choice for applications that require complex forming and welding.

3. Strength

0Cr18Ni9 (AISI 304) exhibits good strength and can bear both cold and hot working. It is also known for good ductility and toughness even at cryogenic temperatures. This grade has a yield strength of 205 MPa and an ultimate tensile strength of 515 MPa.

4. Corrosion Resistance

0Cr18Ni9 (AISI 304) offers good corrosion resistance in fresh water, and is particularly resistant to oxidation in acidic conditions. It has superior pitting and crevice corrosion resistance, making it well suited for applications in which contact with chlorides would be expected.

Physical Properties of 00Cr19Ni10 (AISI304L)

1. Composition

The chemical composition of 00Cr19Ni10 (AISI 304L) is as follows:

• Carbon (C): 0.03% max

• Chromium (Cr): 18-20%

• Nickel (Ni): 9.5-12%

• Iron (Fe): Balance

2. Formability

00Cr19Ni10 (AISI 304L) offers excellent formability and can be easily bent, rolled, or welded into many complex shapes. This feature makes 00Cr19Ni10 (AISI 304L) an ideal choice for applications that require complex forming and welding.

3. Strength

00Cr19Ni10 (AISI 304L) exhibits good strength and can bear both cold and hot working. It is also known for good ductility and toughness even at cryogenic temperatures. This grade has a yield strength of 170 MPa and an ultimate tensile strength of 485 MPa.

4. Corrosion Resistance

00Cr19Ni10 (AISI 304L) offers good corrosion resistance in fresh water, and is particularly resistant to oxidation in acidic conditions. It has superior pitting and crevice corrosion resistance, making it well suited for applications in which contact with chlorides would be expected.

Conclusion

In summary, 0Cr18Ni9 (AISI 304) and 00Cr19Ni10 (AISI 304L) are two varieties of stainless steel. Both of these stainless steel grades have excellent formability, good strength and ductility, and superior corrosion resistance, making them suitable for a wide range of applications. 0Cr18Ni9 (AISI 304) has a yield strength of 205 MPa and an ultimate tensile strength of 515 MPa, while 00Cr19Ni10 (AISI 304L) has a yield strength of 170 MPa and an ultimate tensile strength of 485 MPa.

Physical Properties of AISI304 and AISI304L

AISI304 and AISI304L are two of the most common stainless steel grades. They are both part of the 300 series of stainless steels and have many common properties. AISI304 and AISI304L differ mainly in their carbon content.

AISI 304, also known as 0Cr18Ni9 is an austenitic stainless steel with a nominal composition of 18% chromium, 8% nickel and a maximum carbon content of 0.07% carbon. It has a density of 7.9 g/cm3 and a melting point at 1454°C. It is non-magnetic and has a higher corrosion resistance than the ferritic and martensitic steel grades, making it ideal for chemical and food processing and industrial equipment.

AISI 304L, also known as 0Cr19Ni10 is a low-carbon variant of AISI 304. It has a nominal composition of 18% chromium, 8% nickel, and a maximum carbon content of 0.03%. Its melting point is 1445°C and its density is 7.9 g/cm3. Its corrosion resistance is similar to AISI 304.

These two grades of stainless steel also have some differences in their physical properties. AISI 304L has higher tensile strength, yield strength, and elongation than AISI 304, whereas AISI 304 has higher resistance to corrosion.

In summary, AISI 304 and AISI 304L are two of the most commonly used grades of stainless steel. They both have similar mechanical and physical properties, but AISI 304L has higher strength and corrosion resistance than AISI 304. Their combination of strength, durability, and corrosion resistance makes them suitable for a variety of applications.