253MA
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Description
Our company’s scope of supply includes
Non-standard forgings, round rods, steel plates/steel belts, flange pipe fittings, seamless pipes, capillaries, etc. Welcome to inquire!
1. Introduction to 253MA materials
253MA is a heat-resistant austenitic stainless steel designed for applications requiring high creep strength and good corrosion resistance.
The chemical composition of 253MA is balanced, making the steel have the most suitable comprehensive performance in the temperature range of 850℃-1100℃, extremely high oxidation resistance, and oxidation temperature up to 1150℃; extremely high creep resistance and creep fracture strength; good high temperature corrosion resistance and balance brush corrosion resistance in most gas media; high yield strength and tensile strength at high temperatures; good moldability and weldability, as well as sufficient machinability.
In addition to the alloy elements chromium and nickel, 253MA stainless steel also contains a small amount of rare earth metals (REM), which significantly improves its oxidation resistance. Nitrogen was added to improve creep properties and to make this steel completely austenite. Although the chromium and nickel content are relatively low, this stainless steel has many cases the same high temperature characteristics as highly alloyed alloy steels and nickel-based alloys.
2. 253MA chemical composition
| alloy | % | Chromium Cr | Carbon C | Silicon Si | Sulfur S | Ni | Nitrogen N | 铈 What |
| 253ma | Minimum value | 20.0 | 0.05 | 1.40 | – | 10.0 | 0.14 | 0.03 |
| Maximum value | 22.0 | 0.10 | 2.00 | 0..030 | 12.0 | 0.20 | 0.08 |
3. 253MA corrosion resistance and high temperature resistance
The steel has the most suitable comprehensive performance in the temperature range of 850℃-1100℃, extremely high oxidation resistance, and a scale temperature of up to 1150℃; extremely high creep resistance and creep fracture strength; has good high temperature corrosion resistance and balance brush corrosion resistance in most gas media; has high yield strength and tensile strength at high temperatures; good moldability and weldability, as well as sufficient machinability. In addition to the alloy elements chromium and nickel, 253MA stainless steel also contains a small amount of rare earth metals (REM), which significantly improves its oxidation resistance. Nitrogen was added to improve creep properties and to make this steel completely austenite. Although the chromium and nickel content are relatively low, this stainless steel has many cases the same high temperature characteristics as highly alloyed alloy steels and nickel-based alloys.
4. 253NA application fields
253MA is widely used in sintering equipment, blast furnace equipment, steel melting, furnace and continuous casting equipment, steel rolling mills (heating furnaces), heat treatment furnaces and accessories, mineral equipment and cement production equipment, etc. 253MA steel can use pressure-bearing occasions at 900 ℃ and non-pressure-bearing high-temperature components with working temperatures up to 1150 ℃.
