BDF can offer you good quality 253MA stud bolts, 253MA threaded rod, 253MA threaded bar, 253MA double ends stud bolts… in full thread or half thread. Our standards/specifications covers ASTM, ASME, DIN, ISO. Such as DIN975, DIN976, DIN938, DIN939, ASME/AISI 18.2.1 etc. We can also manufacture all shapes of non-standard hastelloy stud bolts according to customers’ drawing. BDF is able to produce a wide range of sizes stud bolts. The diameter of bolts ranges from M6-M80 in Metric and 5/16” to 3 1/2” in Inch, and length can be up to 1000mm or 12 feet.
Chemical composition：
C 0.05-0.10
S≤0.030
Si 1.40-2.00
Cr 20.00-22.00
Ni 10.00-12.00
Mo --
N 0.14-0.20
Ce: 0.03-0.08
Overview：
253MA is a heat resistant austenitic stainless steel designed for applications requiring high creep strength and good corrosion resistance. In addition to the alloying elements chromium and nickel, 253MA stainless steel also contains a small amount of rare earth metal (Rare Earth Metals, REM), which significantly improves its antioxidant capacity. Nitrogen is added to improve creep properties and make this steel a complete austenite. Although the chromium and nickel contents are relatively low, this stainless steel has many of the same high temperature characteristics as the high alloyed alloy steel and nickel-based alloy.