253MA/S30815/1.4835/X9CrNiSiNCe21-11-2 SEAMLESS STAINLESS STEEL PIPE AND TUBE

HomeProducts & servicesAustenitic Stainless Steel Pipes And Tubes 253MA/S30815/1.4835/X9CrNiSiNCe21-11-2 SEAMLESS STAINLESS STEEL PIPE AND TUBE
253MA/S30815/1.4835/X9CrNiSiNCe21-11-2 SEAMLESS STAINLESS STEEL PIPE AND TUBE

253MA/S30815/1.4835/X9CrNiSiNCe21-11-2 SEAMLESS STAINLESS STEEL PIPE AND TUBE

① STANDARD: ASTM A213/ ASTM A312/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...

② OD RANGE : 6-1016 MM

③ THICKNESS RANGE: 1-65 MM

Chemical Composition

Cr

Ni

C

Si

Mn

P

S

N

Ce

Fe

20.0-22.0

10.0-12.0

0.05-0.10

1.40-2.00

≤0.08

≤0.04

≤0.03

0.14-0.20

0.03-0.08

Balance

Mechanical Properties

Grade

Tensile Strength

ksi(MPa)

Yield Strength

ksi(MPa)

Elongation in 2", %

Hardness Brinell

Hardness Rockwell

253SMA

≥87(600)

≥45(310)

≥40

≤217HBW

≤95HRB

Application

  • Pyrolysis Vessels
  • Boiler Nozzles
  • Corrugated Boxes
  • Cyclones
  • Bar Baskets
  • Radiant Tubes
  • Combustion chambers

Material Summary

Despite its lean nickel content, 253 MA offers an outstanding combination of creep strength and high resistance to oxidation, sulphidation and erosion/abrasion at extremely high temperatures. This makes the alloy more economical than most heat resistant alloys.

The high heat resistant properties of 253 MA are obtained by the tight control of micro alloy additions. Whilst the benefit of creep rupture strength is down to the combination of nitrogen, carbon and cerium, its superior oxidation resistance is a result of the combination of cerium and silicon.

Its strength at these temperatures is higher than that of alternatives such as Grade 310.

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