253MA / S30815 / 1.4835 Austenitic High Temperature Heat Resistant Stainless Steel Plates / Sheets
253MA / S30815 / 1.4835 Austenitic high temperature heat resistant stainless steel plates
The High Strength Heat Resistant Stainless Steel 253 MA
253 MA is a lean austenitic heat resistant alloy with high strength and outstanding oxidation resistance.
It offers an excellent combination of creep strength along with excellent resistance to oxidation,
sulfidation, and erosion at high temperatures in an alloy containing just 11% nickel.
Because of its lean chemistry, 253 MA is very economical compared to most heat resistant alloys.
253 MA obtains its heat resistant properties by tight control of micro alloy additions.
The use of cerium in combination with silicon results in superior oxidation resistance to 2000°F (1093°C).
Nitrogen, carbon, and cerium combine to provide creep rupture strength that is double that of
type 310 and 309 stainless at 1600°F (871°C).
Designations
UNS S30815
EN 1.4835
SS 2368
W. Nr. ( 1.4893 ), ( 1.4828 Modified )
Chemistry data ( % )
| Grade | C | Si | Mn | P | S | Cr | Ni | N | Ce | Fe |
| 253MA | 0.05 - 0.10 | 1.40 - 2.00 | 0.80 | 0.040 | 0.030 | 20.0 - 22.0 | 10.00 - 12.00 | 0.14 - 0.20 | 0.03 - 0.08 | Balance |
Special Characteristics
High Creep strength
Very good resistance to isothermal and, above all, cyclic oxidation
Very good resistance to combustion gases
Good structual stability at high temperatures
Good weldability
Applications
a wide variety of components requiring high strength at elevated temperatures.
Among them are included radiant heating tubes, heat exchangers, heat treating oven components,
kilns, expansion bellows and stack dampers.
Contact Ahonest steel sales to discuss more
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