Cold rolled and hot rolled AISI 4130 and 4140 stainless steel seamless tubes are widely used in various industries due to their numerous benefits. These tubes are known for their high strength, durability, and Corrosion resistance, making them ideal for applications that require reliable and long-lasting materials.
One of the key advantages of using cold rolled AISI 4130 and 4140 stainless steel seamless tubes is their superior strength. Cold rolling is a process that involves passing the steel through a series of rollers at room temperature, which results in a more uniform and refined grain structure. This process enhances the strength of the steel, making it ideal for applications that require high Tensile strength and resistance to deformation.
In addition to their strength, cold rolled AISI 4130 and 4140 stainless steel seamless tubes also offer excellent durability. The cold rolling process compresses the steel, making it denser and more resistant to wear and tear. This durability makes these tubes suitable for use in harsh environments where they may be exposed to extreme temperatures, chemicals, or abrasive materials.
Another benefit of using cold rolled AISI 4130 and 4140 stainless steel seamless tubes is their corrosion resistance. Stainless steel is inherently resistant to corrosion, but the cold rolling process further enhances this property by creating a protective oxide layer on the surface of the steel. This oxide layer acts as a barrier against moisture, chemicals, and other corrosive agents, ensuring that the tubes remain in excellent condition even in challenging environments.
Furthermore, cold rolled AISI 4130 and 4140 stainless steel seamless tubes are known for their excellent machinability. The cold rolling process refines the grain structure of the steel, making it easier to machine and fabricate. This makes these tubes ideal for applications that require precise dimensions and complex shapes, as they can be easily cut, drilled, and welded without compromising their strength or integrity.
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Hot rolled AISI 4130 and 4140 stainless steel seamless tubes are often used in applications where strength and durability are not the primary concerns. These tubes are commonly used in structural applications, such as construction and infrastructure projects, where their high tensile strength and resistance to deformation make them ideal for supporting heavy loads and withstanding external forces.
In conclusion, cold rolled and hot rolled AISI 4130 and 4140 stainless steel seamless tubes offer a wide range of benefits that make them ideal for various industrial applications. From their superior strength and durability to their excellent corrosion resistance and machinability, these tubes are versatile, reliable, and cost-effective solutions for a wide range of applications. Whether you need tubes for structural support, fluid transport, or any other purpose, cold rolled and hot rolled AISI 4130 and 4140 stainless steel seamless tubes are sure to meet your requirements and exceed your expectations.
Comparison of Hot Rolled vs. Cold Rolled AISI 4130 and 4140 Stainless Steel Welded Pipes
When it comes to choosing the right type of stainless steel for your project, it’s important to understand the differences between hot rolled and cold rolled AISI 4130 and 4140 stainless steel welded pipes. Both types of steel have their own unique properties and advantages, so it’s crucial to weigh the pros and cons of each before making a decision.
Hot rolled stainless steel is produced by heating the steel to a high temperature and then rolling it into a shape. This process results in a rough surface finish and a larger grain structure, which can make the steel less ductile and more prone to cracking. However, hot rolled steel is generally less expensive and easier to work with than cold rolled steel, making it a popular choice for a wide range of applications.
On the other hand, cold rolled stainless steel is produced by cooling the steel to a low temperature and then rolling it into a shape. This process results in a smoother surface finish and a smaller grain structure, which can make the steel more ductile and less prone to cracking. Cold rolled steel is also generally stronger and more precise than hot rolled steel, making it a preferred choice for applications that require high strength and tight tolerances.
Chemical Composition, Mass Fraction (%)
Grade
C
Mn
Mo
Cr
Ni
Cu
P
S
Si
Type
min
max
min
max
min
max
min
max
max
max
max
max
max
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
H40
—
—
—
—
—
—
—
—
—
—
—
—
0.03
—
J55
—
—
—
—
—
—
—
—
—
—
—
—
0.03
—
K55
—
—
—
—
—
—
—
—
—
—
—
—
0.03
—
N80
1
—
—
—
—
—
—
—
—
—
—
0.03
0.03
—
N80
Q
—
—
—
—
—
—
—
—
—
—
0.03
0.03
—
R95
—
—
0.45 c
—
1.9
—
—
—
—
—
—
0.03
0.03
0.45
L80
1
—
0.43 a
—
1.9
—
—
—
—
0.25
0.35
0.03
0.03
0.45
L80
9Cr
—
0.15
0.3
0.6
0.9
1.1
8
10
0.5
0.25
0.02
0.03
1
L80
13Cr
0.15
0.22
0.25
1
—
—
12
14
0.5
0.25
0.02
0.03
1
C90
1
—
0.35
—
1.2
0.25 b
0.85
—
1.5
0.99
—
0.02
0.03
—
T95
1
—
0.35
—
1.2
0.25 b
0.85
0.4
1.5
0.99
—
0.02
0.03
—
C110
—
—
0.35
—
1.2
0.25
1
0.4
1.5
0.99
—
0.02
0.03
—
P110
e
—
—
—
—
—
—
—
—
—
—
0.030 e
0.030 e
—
Q125
1
—
0.35
1.35
—
0.85
—
1.5
0.99
—
0.02
0.01
—
NOTE Elements shown shall be reported in product analysis.
a The carbon content for L80 may be increased up to 0.50 % maximum if the product is Oil-quenched or polymer-quenched.
b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the Wall thickness is less than 17.78 mm.
c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched.
d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm.
e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum.
When it comes to AISI 4130 and 4140 stainless steel welded pipes, both hot rolled and cold rolled options are available. Hot rolled AISI 4130 and 4140 stainless steel welded pipes are typically used in applications where cost is a primary concern, such as in the construction industry. These pipes are easy to work with and can be welded without any special equipment, making them a convenient choice for many projects.
On the other hand, cold rolled AISI 4130 and 4140 stainless steel welded pipes are often used in applications where strength and precision are more important, such as in the aerospace industry. These pipes are more expensive than their hot rolled counterparts, but they offer superior strength and dimensional accuracy, making them ideal for critical applications where failure is not an option.
https://youtube.com/watch?v=4erHivkeuv4
OD In (mm)
+
–
WT In (mm)
+
–
<1(25.4)
0.10
0.10
≤1.1/2(38.1)
20%
0
1∼1.1/2(25.4∼38.1)
0.15
0.15
>1.1/2(38.1)
22%
0
>1.1/2∼<2(38.1∼50.8)
0.20
0.20
2∼<2.1/2(50.8∼63.5)
0.25
0.25
2.1/2∼<3(63.5∼76.2)
0.30
0.30
3∼4(76.2∼101.6)
0.38
0.38
>4∼7.1/2(101.6∼190.5)
0.38
0.64
>7.1/2∼9(190.5∼228.6)
0.38
1.14
In conclusion, the choice between hot rolled and cold rolled AISI 4130 and 4140 stainless steel welded pipes ultimately depends on the specific requirements of your project. If cost is a primary concern and you don’t need the highest level of strength and precision, hot rolled steel may be the best option for you. However, if you require superior strength and dimensional accuracy, cold rolled steel is likely the better choice. By understanding the differences between these two types of steel and weighing the pros and cons of each, you can make an informed decision that will ensure the success of your project.
Hot rolled stainless steel is produced by heating the steel to a high temperature and then rolling it into a shape. This process results in a rough surface finish and a larger grain structure, which can make the steel less ductile and more prone to cracking. However, hot rolled steel is generally less expensive and easier to work with than cold rolled steel, making it a popular choice for a wide range of applications.
On the other hand, cold rolled stainless steel is produced by cooling the steel to a low temperature and then rolling it into a shape. This process results in a smoother surface finish and a smaller grain structure, which can make the steel more ductile and less prone to cracking. Cold rolled steel is also generally stronger and more precise than hot rolled steel, making it a preferred choice for applications that require high strength and tight tolerances.
