S31254 | 254SMO Duplex Stainless Steel

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S31254 | 254SMO Duplex Stainless Steel  Stainless Steel


We are the Leading Supplier of Stainless Steel Super Duplex S31254.  
Stainless Steel S31254 (254SMO Super Duplex) is a very high end austenitic stainless steel, with twice strength than 300 Series Stainless Steel.  

We supply and export to Singapore , Indonesia , Brunei and other ASEAN Countries.  
Our specialty is to provide wide range of stainless steel
 with no minimum order (MOQ).

E Steel supply Stainless Steel Super Duplex S31254 (254SMO Duplex) Round Bars / Rods / Shaft , Super Duplex 254SMO Plates 




 

Super Duplex 254SMO Supplier - S31254 Duplex , 1.4547 Super Duplex , 6% Super Stainless 

Stainless steel 254SMO ( UNS S31254 ) is a very high end austenitic stainless steel. It is designed with a combination of impact toughness resistance to chloride stress corrosion cracking, and pitting and crevice corrosion with strength that is twice that of the stainless steel 300 series.

For certain applications, stainless steel 254SMO ( 1.4547 ) has been reported to be a cost-effective substitute for high nickel and titanium alloys. It is known to possess excellent workability as well.

 

Chemical Composition of 254 SMO Super Duplex 

Element Content (%)
Iron, Fe 55.69
Chromium, Cr 20
Nickel, Ni 18
Molybdenum, Mo 6.1
Nitrogen, N 0.20
Carbon, C 0.010


Physical Properties of S31254 Super Duplex 

Properties Metric Imperial
Density 8 g/cm3 0.289 lb/in3

 

Mechanical Properties of 6% Super Stainless (254 SMO) 

Properties Metric Imperial
Tensile strength 680 MPa 98600 psi
Yield strength 300 MPa 43500 psi
Modulus of elasticity 195 GPa 28300 ksi
Shear modulus 75 GPa 10900 ksi
Poisson’s ratio 0.30 0.30
Elongation at break 50 % 50 %
Hardness, Brinell 210 210


Thermal Properties of 254SMO Duplex 


Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 16.5 µm/m°C 9.17 µin/in°F
Thermal conductivity 14 W/mK 97.2 BTU in/hr.ft².°F


Machinability of S31254 SS 


254 SMO stainless steel is quite tough to machine due to the extremely high work hardening rate and lack of sulfur content; however using sharp tools, overpowered machine tools, positive feeds, good amount of lubrication, and slow speeds tend to provide good machining results.


Welding

Welding of stainless steel type 254 SMO requires filler material without which it results in poor strength properties. Filler metals such as AWS A5.14 ERNiCrMo-3, and alloy 625 are recommended. Electrodes used in the process, have to match with AWS A5.11 ENiCrMo-12.


Annealing

Annealing of Stainless Steel Grade 254 SMO should be performed at 1149-1204°C (2100-2200°F), which should be followed by a water quench.


Hot Working

Forging, upsetting and other operations relating to this material can be performed at 982 – 1149°C (1800 – 2100°F). It is recommended that temperatures do not exceed this range as it would result in scaling and reduction in the workability of the material. To re-attain maximum corrosion resistant properties, it is advisable to perform post-process annealing.


Cold Working

Cold working can be carried out using all the traditional methods; however the process would be tough due to its high work hardening rate. The result will provide the material with increased strength and toughness.


Hardening of 254SMO , F44


Stainless steel grade 254 SMO™ does not respond to heat treatment. Hardening is possible only through cold reduction.


Applications of 1.4547 , S31254 Super Duplex 

Stainless steel grade 254 SMO™ is used in the following areas:
  • Saltwater handling
  • Tall oil distillation columns
  • Flue gas desulfurization scrubbers
  • Components used in petroleum production
  • Food processing equipment
  • Process equipment in chemical industry
  • Bleaching equipment in the pulp and paper industry
  • Flue-gas cleaning
  • Desalination
  • Heat exchangers

Our Sales & Supplier Network

E Steel has a Wide Global Sourcing and Sales Networking including : 
Australia, Pakistan,  Malaysia, Singapore, Taiwan, China,Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, China, Sweden, United States, Dubai, Finland, Brunei,Germany.


 

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