253MA、UNS S30815、F45、W.Nr.1.4835 

Overview of 253MA (S30815, F45, 1.4835) austenitic stainless steel:

253MA (S30815, F45, 1.4835) is a heat-resistant austenitic stainless steel designed for applications requiring high creep strength and good corrosion resistance. Its operating temperature range is 850 ~ 1100 ℃.

The chemical composition of 253MA (S30815, F45, 1.4835) is balanced, which makes the steel have the most suitable comprehensive properties in the temperature range of 850 ℃ -1100 ℃, extremely high oxidation resistance, and the scale temperature is up to 1150 ℃ High creep resistance and creep rupture strength; good resistance to high temperature corrosion and balance brush corrosion in most gaseous media; high yield strength and tensile strength at high temperatures; good Formability and weldability, and sufficient machinability.

In addition to the alloying elements chromium and nickel, 253MA stainless steel also contains a small amount of rare earth metals, which significantly improves its oxidation resistance. Nitrogen was added to improve creep properties and make this steel fully austenitic. Despite relatively low chromium and nickel content, this stainless steel has many of the same high temperature characteristics as highly alloyed alloy steels and nickel-based alloys.

 

Chemical composition of 253MA (S30815, F45, 1.4835) austenitic stainless steel:

C≤	Si≤	Mn≤	P≤	S≤	Cr≥	Ni≥	Mo≥	N≤	V≤	Fe≤
0.05 0.10	1.40 2.00	0.80	0.040	0.030	20.0 22.0	10.0 12.0	8.0 10.0	0.14 0.20	0.03 0.08	Margin

 

Mechanical properties of 253MA (S30815, F45, 1.4835) austenitic stainless steel:

Tensile strength: σb≥650Mpa, yield strength σb≥420Mpa: elongation: δ≥40%

 

253MA (S30815, F45, 1.4835) austenitic stainless steel characteristics:

253MA is a nickel-saving heat-resistant austenitic stainless steel designed for applications requiring high creep strength and good corrosion resistance. Its operating temperature range is 850 ~ 1100 ℃.

1. Compared with 310S and 1Cr20Ni14Si2, it has better performance, saves Ni, and is cheaper.

2. High strength at 900 ℃. In air, it can be used up to 1150 ° C under non-stressed conditions, and has excellent high temperature oxidation resistance.

3. The short-term tensile strength at each temperature is more than 20% higher than that of ordinary stainless steel (such as 304, 310S).

4, with high temperature long-term performance (creep performance, long-term performance).

 

253MA (S30815, F45,1.4835) Austenitic stainless steel applications:

253MA is widely used in: sintering equipment, blast furnace equipment, steel melting, furnace and continuous casting equipment, rolling mill (heating furnace), heat treatment furnace and accessories, mineral equipment and cement production equipment. 253MA steel can be used in pressured places up to 900 ℃ and non-pressured high-temperature parts with working temperature up to 1150 ℃.