Stainless Steel 253MA
UNS S30815 ASTM A 240, A 276, A 312 A 358, A 409, A 473, A 479 A 480, A 813, A 814
Forms of 253 MA Available Sheet Plate Bar Pipe Welding Material: Bare Weld Wire, Coated Electrode and Spooled Weld Wire
253 MA Stainless Overview Stainless 253 MA is a lean austenitic heat resistant alloy with high strength and outstanding oxidation resistance. 253 MA maintains its heat resistant properties by advanced control of micro alloy additions. The use of rare earth metals in combination with silicon gives superior oxidation resistance up to 2000 F. Nitrogen, carbon and a dispersion of rare earth and alkali metal oxides combine to provide creep rupture strength comparable to the nickel base alloys. A wide variety of components requiring high strength at elevated temperatures such as heat exchangers, kilns, stack dampers and oven components are common applications for 253 MA.
Chemical Composition, %
Cr |
Ni |
C |
Si |
Mn |
20.0-22.0 |
10.0-12.0 |
0.05-0.10 |
1.40-2.00 |
0.80 Max |
P |
S |
N |
Ce |
Fe |
0.040 Max |
0.030 Max |
0.14-0.20 |
0.03-0.08 |
Balance |
Some characteristics of 253 MA
Excellent oxidation resistance to 2000 F
High creep-rupture strength
Applications of 253 MA
Burners, Boiler Nozzles
Petrochemical and refinery tube hangers
Heat exchangers
Expansion bellow
Stack dampers
Mechanical Properties Room Temperature
|
Specified Limits Minimum |
Typical Range |
Ultimate Tensile Strength, psi |
87,000 |
90,000-114,000 |
.2% Offset Yield Strength, psi |
45,000 |
45,000-69,000 |
Elongation in 2", % |
40 |
42-70 |
Reduction of Area, % |
50 |
- |
Hardness Rockwell B |
- |
Rb 90 |
Fabrication and Welding with Stainless 253 MA
Stainless steel 253 MA is readily fabricated by standard commercial proced, ures. In comparison to
carbon, steel, stainless&n, bsp;steels are tougher and tend to work harden rapidly. However, with positive
feeds and slow speeds combined with abundant cutting fluid this alloys tendency to work harden
, may be minimized.Stainless 253 MA can be welded using conventional welding processes. Filler
metal should be of similar composition for maximum weld integrity and properties.
ASTM Specifications
Plate |
Bar |
Seamless Pipe |
Welded Pipe |
A240, A480, A167 |
A276, A479 |
A213, A312 |
A312, A358, A409, A813, A814 |
Stainless steel supplier in Shanghai city. Welcome to contact us for quotation.
Related hot words search: AISI 304, AISI 301, AISI 303, AISI 321, AISI 309S, AISI 310, AISI 316, AISI 317, AISI 317L, AISI 347H, 253MA, AISI 201, AISI 446, AISI 430
|