A Guide on SMO 254 Forged Fittings

A Guide on SMO 254 Forged Fittings

SMO 254 Forged Fittings

  • SMO 254 is a super austenitic stainless steel with high molybdenum, nitrogen content, and excellent strength, Compared with traditional austenitic stainless steel (such as 316L), it has pitting and crevice corrosion resistance and high strength.
  • SMO 254 has excellent resistance to stress corrosion cracking, cold tube forming, and can be used at temperatures up to 120°C without annealing. SMO 254 products are just one of high resistance alloy products at our premises.
  • These SMO 254 products are available in various forms such as SMO 254 Pipe Fittings, SMO 254 Butt-weld Fittings, SMO 254 Socket weld Fittings, SMO 254 Forged Fittings, SMO 254 Threaded Fittings, SMO 254 Flanges, 254 SMO Tube Fittings, and many more.
  • The alloy is suitable for the chemical processing industry, offshore oil and gas platform process systems, and seawater desalination plants.
  • This alloy is not easy to process and is much more difficult than ‘ordinary’ austenitic stainless steel such as 304 and 316.
  • SMO 254 fittings are an economical alternative for lower-pressure applications.
  • SMO 254 fittings have a thicker wall for higher-pressure applications.


  • The chemical analysis of SMO Grade 254 shows that when the solder cools, ferrite and austenite are formed to provide hot crack resistance.
  • A post-weld anneal is recommended, as is consultation with the product manufacturer regarding welding parameters.
  • SMO 254 Forged Fittings (UNS S31254) austenitic stainless steel is designed for maximum resistance to pitting and crevice corrosion.
  • SMO 254 Forged Fittings is developed for use in halide-containing environments such as seawater.

SMO 254 Forged Fittings Application

  • SMO 254 Forged Fittings are used in Oil & Gas Industry.
  • Grade SMO 254 Forged Fittings are used in Petroleum.
  • Pulp & Paper Industry.
  • ASME SA182 SMO 254 High-Pressure Fittings uses in Fabrication Industry.
  • Food Processing Industry.
  • 254 SMO Forged Fittings are used in Structural Pipe.
  • Water Supply Systems.

Specification of Stainless Steel 304 Round Bar

The Stainless Steel 304 Round Bar consists of a stainless material which has 18% chromium and 8% nickel in its composition. The material has properties of corrosion resistance and strength. We are very popular when it comes to manufacturing, supplying, and exporting of Stainless Steel 304 Round Bar. With 515MPa minimum tensile strength and 205MPa minimum yield strength, the material is strong.

304 SS Bars have ribs that connect it to the concrete mechanically, and under high pressures it can still be pushed out of the concrete, an incident that often accompanies a larger-scale collapse of the structure. These bars are either firmly embedded in adjacent structural members to avoid such a failure, or bent and hooked at the ends to secure them around the concrete and other bars.

Now that we know a brief about the Stainless Steel 304 Round Bars, let’s get to know the specifications of the same.

  • The density and melting point of these round bars is 8.0 g/cm3 and 1400 degree Celsius respectively.
  • They have a tensile strength of Psi – 75000, MPa – 515 and yield strength of Psi – 30000, MPa – 205, and elongation of 35%.
  • The specifications of these Stainless Steel 304 Round Bar ranges from ASTM A276, ASME SA276 / ASTM A479, ASME SA479.
  • At higher temperature of 60 degrees C, the corrosion resistant action of the 304 SS Round Bar is reduced to around 150 mg/L. These round bars are available in the range 4mm to 500mm in outside diameter.
  • In intermittent service at a temperature range of 870 degrees C, and in continuous service at 925 degrees C, the SS 304 Round Bar has good oxidation resistance. Continuous use of grade 304 stainless steel at temperatures between 425 degrees C and 860 degrees C is not recommended if subsequent resistance to aqueous corrosion is necessary.
  • They have excellent forming and good welding features. With regard to the national and international standard of raw materials, we also sell these 304 round bars at market-leading prices in personalised sizes and thicknesses according to unique demands from our valued customers.

Brief on Alloy Steel Round Bars

An Alloy steel round bar is a cylindrical metal bar made of steel that has various industrial and commercial uses. A producer of rolled bars can produce several different kinds of round bars. A bright round bar, for instance, is a steel bar that has been made shiny by a process called drawing, peeling, or grinding over a hot-rolled steel round bar finish.

In the manufacture of instruments, bolts, screws, machine parts, fencing, cars, and more, these bright round bars are also used. By heating the steel, the hot-rolled bar is created so that it can be shaped in different shapes such as round, square, flats, etc. Thus, it is called a steel round bar, steel square bar, or steel flat bars.

Another type of round bar is a rolled or forged alloy steel round bar. Small quantities of one or more alloying elements, such as manganese, chromium, nickel, titanium, and copper, are found in this type of steel. Because it is readily available, simple to process, and has good mechanical properties, alloy steel is common.

This type of steel is more resistant than carbon steel to heat and mechanical treatments. For any number of applications with different finishes, steel round bars can be used to meet the needs of customers and sectors such as mining, oil, and gas, fasteners, automobile, agricultural machinery, aerospace, defense, railways, etc.

The round bars are made from ingots and are processed after giving the required reduction ratio and discarding hot top and bottom to homogeneity. These bars are further heat treated by annealing, stress reviling and normalizing, quenching and tempering, and spheroidizing annealing.

They are used for a range of applications, such as residential construction, engineering construction, non-residential construction, transportation and storage, mining infrastructure, development, etc.

The bars lie under the requirements of ASTM, ASME, and API, with the specifications of ASTM, ASME, SA 182, ASTM 276, and ASME SA 276. In general, the bars range from 4mm to 350mm in diameter. The composition of the 42crmo4 Bar consists of carbon, manganese, chromium, molybdenum, phosphorus, and sulphur.

With a minimal tensile strength range of 850MPa to 1000MPa, they are corrosion resistant and sturdy. It is immune to wearing, as well. The structure of the SAE 4140 Rod consists of carbon, silicon, nickel, phosphorus, manganese, chromium, and sulphur.

This was a brief information about the Alloy Steel Round Bars. To know more keep looking for more blogs in this space.

What is Stainless Steel Bar?

Stainless Steel bars are very commonly used materials in the construction industry.  They are also referred to as Stainless Steel rods, stainless rounds, or stainless round bars. The Stainless Steel Bars are widely used in a broad range of aesthetic and structural purposes across all industrial applications. Some of the applications include architectural design and engineering, food-grade production environments and utensils, household items, fixtures and products, medical supplies, machinery and surgical/ hygiene tools, chemical or marine vessels and equipment, oil/gas pipelines and platforms, water treatment and supply, transport and automotive components, tankers, and containers.

Stainless bars boast a wide range of characteristics but corrosion resistance remains the most important of all. The chief elements of Stainless Steel are iron and chromium and to qualify as stainless steel, the metal material should contain at least 10.5% chromium.

Other common elements present in different proportions in stainless steel include carbon, silicon, and manganese. Further alloying additions are also added during manufacture to achieve particular applications/characteristics of the finished product; these may usually include titanium, molybdenum, nickel, copper, or nitrogen. In a finished piece of stainless steel, the total sum of alloying ingredients may sometimes be as high as 30 percent.

A little further on in this guide, we will talk more about various types of stainless alloys and their respective characteristics, but you should still be mindful that the metal is processed and graded in several different ways when trying to purchase stainless steel online – be it bars, rods, or stainless steel tubes, sheets and angles.

This is required to meet various corrosion resistance requirements for use in very particular types of applications and environments, and this is why you can find so many different ‘grades’ of stainless products listed on most stainless steel bar suppliers’ catalog pages.

There are many different sizes of stainless steel bars or rods available in the market as there are uses for the product. Stainless steel grading systems are intended to provide consumers with an indication of both the alloy subtype used and the variety of applications for which a product is suitable.