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253MA

   

CHARACTERISTICS 

AVESTA 253 MA is designed for welding the Outokumpu high temperature steel 253 MA. The steel as well as the consumable provides excellent properties at temperatures 1562-2012°F (850-1100°C). The resistance to carbon and nitrogen pick up at elevated temperatures is good. This is achieved, among other things, by alloying with Si and rare earth metals (REM). AVESTA 253 MA can also be used for welding the somewhat lower alloyed Outokumpu 153 MA.  The composition of the consumable is balanced to ensure a crack resistant weld metal with a ferrite content of 3-10%.

 

Chemical composition (nominal) %

C

Si

Mn

P

S

Cr

Ni

N

Others

0.07

1.6

≤0.6

≤0.040

≤0.030

21

10

0.15

REM

 

WELDING DIRECTIONS 

MIG welding of 253 MA is best performed using spray arc or pulsed arc. The weldability using short arc is somewhat limited and the welding of thin gauges <0.12” (<3 mm) and in?position is best performed using pulsed arc.

253 MA has a tendency of getting a thick oxide layer during hot rolling and welding. Black plates as well as previous weld beads should be carefully brushed or ground prior to welding.

The joint should be prepared with a sufficient root gap to ensure full penetration.  

Ar + 30% He or  Ar + 30% He + 2.5% CO2.

The helium addition improves the fluidity and gives a slightly wider penetration. Helium increases the energy in the arc and the heat should therefore be kept at a lower level than when welding without helium to compensate for the higher temperature in the arc. Addition of helium will increase the blackening slightly.

Stock

Form

Specification

Supply Form

Others

Sheet

Thickness?0.40-4.75mm?General Width?1000?1219?1500mm

Whole Coil or piece of it

Cold Annealed?Surface 2B?2E

Plate

Thickness?4.76-60mm?Width?1500?2000?2500mm?Length?3000?6000?8000?8500mm?Under 10mm plate can be coiled?

Whole Coil or piece of it

Single hot rolling?Solid solution annealed state?Surface 1D

Belt

Thickness?0.10-3.0mm?Width?50-500mm

Whole Coil or Specified size

Cold Annealed?Surface 2B?2E

Bar & Rod

Rolled barΦ5-45mm?Length≤1500mm

Polished Bar?circle?Square?

Solution annealing,descaling

Forged barΦ26-245mm?Length≤4000mm

Weld tube

Outer diameterΦ4.76-135mm?Wall Thickness0.25-4.00mm?Length?≤35000 mm

Base on your requirement

Use for PHE

Seamless Tube

Outer diameterΦ3-114mm?Wall Thickness0.2-4.5mm

Base on your requirement

Use for PHE

Wire

Outer diameterΦ0.1-13mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Forged piece

roundness and square alloy

Base on your requirement

Steel, Alloy

Flangs

All kinds of Flangs

Base on your requirement

Steel, Alloy

Welding Material

Coil wire Φ0.90mm/1.2mm/1.6mm

Base on your requirement

Certificate of Origin?America, Sweden, Britain, Germany, Austria, Italy, France.

Straight WireΦ1.2mm/1.6mm/2.4mm/3.2mm/4.0mm

Welding rodΦ2.4mm/3.2mm/4.0mm

Tube

Elbow, three links, four links, different diameter size

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Explosive bonded laminate

Raw Sheet Thickness≥2mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

 

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