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Introduction
253MA 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.
Duplex Stainless 253MA Applications
1.Furnace components including burners, retorts, conveyor belts, fans, jigs and baskets, rollers, walking beams, radiant tubes, electric heater elements, refractory anchors, hoods, flues, grates, expansion bellows.
2.Petrochemical and refinery tube hangers.
ASTM Specifications
| Plate | Bar | Pipe Smls | Pipe Welded |
| A240, A480, A167 | A276, A479 | A213, A312 | A312, A358, A409, A813, A814 |
Duplex Stainless 253MA Chemical Composition
| C | Mn | Si | P | S | Cr | Ni | N | Ce | |
| min. | 0.05 | - | 1.10 | - | - | 20.0 | 10.0 | 0.14 | 0.03 |
| max. | 0.10 | 0.80 | 2.00 | 0.040 | 0.030 | 22.0 | 12.0 | 0.20 | 0.08 |
Duplex Stainless 253MA Mechanical Properties
| Properties | Metric | 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 procedures. In comparison to carbon steel, stainless 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.
Available Sizes And Specifications
| 253MA stainless steel coil sizes and specifications | |
| Grade | 253MA |
| Cold rolled stainless steel coil | Thickness: 0.3mm- 3.0mm, Width: 1000mm - 2000mm,Surface: 2B/BA/SB/8K/HL/1D/2D etc |
| Hot rolled stainless steel coil | Thickness: 3.0mm - 16mm, Width: 1000mm - 2000mm Surface: No.1/pickling |
| Standard | ASTM A240/A480, ASTM B688, ASTM B463/SB463, ASTM B168/SB168, ASTM B443/SB443/B424/SB424B625/SB625 B575/SB575, JIS G4303, BS 1449, DN17441, G4305 |
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
