Heat Resistant Stainless Steel Pipe
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Heat Resistant Stainless Steel pipe
High-temperature alloy refers to a type of metal material based on iron, nickel, and cobalt that can work at high temperatures above 600°C and under certain stress for a long time; and has high high-temperature strength, good anti-oxidation and anti-corrosion properties, Good fatigue performance, fracture toughness and other comprehensive properties. High-temperature alloys have a single austenite structure and have good structural stability and service reliability at various temperatures.
Based on the above performance characteristics and the high degree of alloying of high-temperature alloys, they are also called "superalloys" and are an important material widely used in aviation, aerospace, petroleum, chemical industry, and ships. According to the matrix elements, high-temperature alloys are divided into iron-based, nickel-based, cobalt-based and other high-temperature alloys. The service temperature of iron-based high-temperature alloys can generally only reach 750~780°C. For heat-resistant parts used at higher temperatures, nickel-based and refractory metal-based alloys are used. Nickel-based high-temperature alloys occupy a particularly important position in the entire field of high-temperature alloys. They are widely used to manufacture the hottest components of aviation jet engines and various industrial gas turbines.
Heat Resistant Stainless Steel chemical composition
In the following overview, you find some examples:
Ferritic
|
EN-No. |
ASTM |
C max. |
Cr |
Ni |
Ti |
N |
Al |
Si |
Ce |
Other |
Max o.T. (*) |
|
1.4713 |
0.12 |
6.0-8.0 |
– |
– |
– |
0.5-1.0 |
0.5-1.0 |
– |
– |
800°C |
|
|
1.4724 |
0.12 |
12.0-14.0 |
– |
– |
– |
0.7-1.2 |
0.7-1.4 |
– |
– |
850°C |
|
|
1.4742 |
0.12 |
17.0-19.0 |
– |
– |
– |
0.7-1.2 |
0.7-1.4 |
– |
– |
1000°C |
Austenitic
|
EN-No. |
ASTM |
C max. |
Cr |
Ni |
Ti |
N |
Al |
Si |
Ce |
Other |
Max o.T.(*) |
|
1.4948 |
304H |
0.2 |
17.0-19.0 |
8.0-11.0 |
Max. 0.10 |
– |
Max. 0.50 |
– |
– |
750°C |
|
|
1.4878 |
321H |
0.1 |
17.0-19.0 |
9.0-12.0 |
Min 4x (C+N); Max 0.70 |
Max. 0.10 |
– |
Max. 0.75 |
– |
– |
850°C |
|
1.4828 |
– |
0.2 |
19.0-21.0 |
11.0-13.0 |
– |
Max. 0.11 |
– |
1.5-2.5 |
– |
– |
1000°C |
|
1.4883 |
309S |
0.08 |
22.0-24.0 |
12.0-15.0 |
– |
Max. 0.11 |
– |
Max. 0.75 |
– |
– |
1000°C |
|
1.4845 |
310S |
0.1 |
24.0-26-0 |
19.0-22.0 |
– |
Max. 0.11 |
– |
Max. 1.5 |
– |
– |
1050°C |
|
1.4818 |
– |
0.08 |
18.0-20.0 |
9.0-11.0 |
– |
0.12-0.20 |
– |
1.0-2.0 |
0.03-0.08 |
– |
1050°C |
|
1.4835 |
– |
0.12 |
20.0-22.0 |
10.0-12.0 |
– |
0.12-0.20 |
– |
1.4-2.5 |
0.03-0.08 |
– |
1150°C |
|
1.4841 |
314 |
0.2 |
24.0-26.0 |
19.0-22.0 |
– |
– |
– |
1.5-2.5 |
– |
1150°C |
Nickel Base Alloys
|
EN-No. |
ASTM |
C max. |
Cr |
Ni |
Ti |
N |
Al |
Si |
Ce |
Other |
Max o.T.(*) |
|
2.4816 |
Alloy 600 |
0.05-0.10 |
14.0-17.0 |
Min, 72 |
Max. 0.3 |
– |
Max. 0.3 |
Max. 0.5 |
– |
Co, Cu, B |
600-900°C |
|
2.4851 |
Alloy 600 |
0.03-0.01 |
21.0-25.0 |
58.0-63.0 |
Max. 0.5 |
– |
1.0-1.7 |
Max. 0.5 |
– |
Cu, B |
550-1200°C |
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