Category Archives: Stainless Steel

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duplex stainless steel

Duplex Stainless Steel: Passing Rigid Steel Standards

Duplex stainless steel gains great popularity with its excellent features and low cost – making more possible advancements in steel crafting.

Duplex stainless steel has originated in 1920s due to the existent pursuit of making advances in steelmaking techniques with respect to the nitrogen control.

duplex stainless steelThough stainless steel is classified into two different types such as the austenite and ferrite, metalworkers still see important technical weaknesses in both types.

Particularly, both of these types are easy to make and fabricate but they still do lacking features that led to more advancements in engineering high class of steels.

Austenitic

  • Has low strength and low resistance to stress corrosion cracking

Ferritic

  • Has poor weldability in thick sections, low strength, and poor low temperature toughness

Due to lack features in both, duplex stainless steel comes in the way. Duplex stainless steels are becoming popular in the manufacturing field and have been distributed and offered by major steel mills for their excellent features:

  • Greater corrosion resistance
  • Resistance to stress corrosion cracking
  • High Strength
  • Good price stability
  • Low cost

Duplex stainless steels consist of two mixed microstructures grains which are the austenite and ferrite. The combined forces of two makes duplex have strength that are roughly twice as strong as compared to regular austenitic and ferritic steels. They also have improved resistance against localized corrosion, crevice cracking, pitting, and stress corrosion cracking which makes it ideal for a wide range of high temperature applications.

Duplex stainless steels have a high amount of chromium and molybdenum but have lower amount of nickel contents. Thus, compared to ordinary stainless steel, duplex stainless steels are lighter in weight and lower in cost – such feature that is most sought by metalworkers in their manufacturing pursuits.

The excellent mechanical and physical properties of duplex stainless steels are achieved with lower alloying elements found in its content, allowing their use to be used cost-effective for a variety of applications.

All of those sum up why duplex stainless steel earns the increasingly growing demand in the market. Most of the manufacturers have preferred it for almost all types of applications including construction and manufacturing. Aside from the high strength, manufacturers see the great convenience in the big cost savings they got from using such materials.

Duplex stainless steels are sure to be perfect in almost all types of application knowing they possess both exceptional properties found in austenite and ferrite.

For all your heavy applications requiring high strength materials, get our free quote now for more information.

stainless steel bars

Tips On How To Choose The Right Grade Type Stainless Steel Bars

Weighing of important qualities is considered in the selecting perfect material to use in producing products like stainless steel bars, medical bars, etc.

As we all know, stainless steels are manufacturing materials that have good strength, corrosion-resistance, and fabrication resistance.

stainless steel barsThese materials can always meet a vast range of design standards and this includes service life, load, and low maintenance. Thus, choosing or selecting the right stainless steel types and grades needs thorough weighing of four qualities in important order:

A. Heat or Corrosion Resistance
– This is the basic reason to consider for specifying stainless steel products. There is a need to have knowledge about the nature of stainless steel environment and the level of required resistance to heat or corrosion of every stainless steel material.

B. Mechanical Properties
– The basis for steel selection is the combination of strength and corrosion resistance. This quality involves particularly elevated or low temperature and strength at room.

C. Manufacturing Operations
– This focuses on the operations on how the product will be made like these following examples: machining, grinding, welding, chamfering, forging, stamping, roll forming, four-slide operations. The quality of a certain steel product really depends on the specific processes that the steel materials undergo to reach hardness, accuracy, and perfect roundness. Among the most sought mechanical operations now is the centerless grinding that is proven to produce accurate roundness.

D. Whole Cost
– Considering the expenses of production and material as well as the increasing savings of product with durability but maintenance-free.

Well, the selection of the particular steel particularly depends on what is required on a particular application. If there is an urge to create stainless steel bars, then more likely austenitic steel types should be used. On the other hand, medical steel bars are much available in martensitic types of steels. The environment of a certain stainless steel product including the chemical processes in which the steel is formed and what will also determine its features like resistance to corrosion and heat will help determine what type of stainless steel material to use. Aside from those important qualities that have to be considered, there are also other factors that need to be taken into account.

1. Required Strength – Austenitic, martensitic, duplex, and PH steels can obtain higher strengths. Strengths may differ according to the series of processes the materials that undergo. For example, forming and welding processes oftentimes influence what material and grade should be the most suitable.

2. Operation’s Temperature – Corrosion rates are usually accelerated by high temperatures. Thus, it signifies a higher grade. Well, mostly low temperatures require hard austenitic steel.

3. Required Product Form – Not all grades can be obtainable in all product sizes and forms like sheet, tube, and bar. Moreover, austenitic steels can offer wide range of dimensions that all product forms can be formed out from it. So mostly stainless steel bars are created from austenitic type of stainless steel.

Well, steel products forms and sizes may differ according to the type of steel used. Austenitic for example, as what has been mentioned, can be perfect for creating stainless steel bars. The certain types of steels undergo various cooling and hardening processes which result to different characteristics in each material.
Almost all stainless steel have good weldability. Therefore, it needs to be taken into account that joint forces and any filler metal should be kept from contaminations like oxide and organic material.

In selecting welding filler materials for stainless steel, a principal concern in matching the major properties of the base metal is considered. Moreover, for duplex and nominally austenitic stainless steel, there should be some control over the ferrite content of the weld metal.

To sum it up, it is not just the type or grade of stainless steel that has to be taken into account, but as well as the environment, the operations, and all – for these will greatly affect the quality of the product. Quality is always sought in very product and purchase.

Feed yourself with more ideas about steel and other products, by visiting us at http://www.ohareprecision.com/.

blog3

How Stainless Steel Bars Gain Popularity

Stainless steel bars are one of the highly sought stainless steel products since they are very useful upon manufacturing parts.

A lot of things can be made from metals. One of the highly sought metals nowadays is the stainless steel. This metal has a very unique feature that it can be used almost in all applications. With the great demand that comes along with its sudden rise in the industry, stainless steel now also comes in different kinds and forms, perfect for different types of applications.

Steel and Bars

One of the highly in-demand steel metals as of today is the stainless steel bar. These bars have proven their worth upon manufacturing parts for any sort, whether for vehicles, appliances, and different utensils and tools. This is one way of upgrading a raw and plain material into a more suited product for various applications like in mechanical, aircraft, architecture, etc.

These stainless steel bars are already rampant as of today. It is pretty obvious that we can see these things glint under the sun in automobile exterior components like exhaust pipe, stand, safety bar, rubber forks, etc.  Simply, the reason why these steel metals are perfect for manufacturing these parts is because of their one-of-kind-hardness and excellent features that are lacking in other types of metals. Stainless steel is highly resistant to corrosion and rusting and can last up to many years. Aside from its high tolerance and ductility, its flawless feature and texture are very appealing to the eyes of every one.

Steel Role in Surgical Treatments

Stainless steels are not just found and used in automobile interior or exterior parts. In short, they don’t just play significantly in mechanical field. They are also eminently and radically used in medical operations and surgeries. These steel are called medical steel bars. Imagine how such metal can help change and save lives.  Well, there are specific steel grades that are chiefly used in crucial surgical treatments – 316 and 316L come first in line. The reliable features of stainless steel let it become one of the highly used medical tools by surgeons and scientists.

How is this made possible?

Elements like chromium, molybdenum, and nickel are alloyed together to make it applicable for all types of medical operations. Basically, chromium has its quality that is highly resistant to corrosion and scratches, so therefore, it can just undergo sterilization and cleaning which are really significant before doing a critical surgery. Another element like molybdenum is also important. Its hardness makes its great for sharp cutting edges but since human body sometimes has a negative reaction to this kind of element, titanium becomes a substitute for molybdenum but it offers more expensive solutions. Lastly, a surface and texture of nickel is extremely polishable and smooth. Its fine details are vital for producing for high quality steel products, machining precisions, etc.

Stainless steel has proven its great significance and flexible qualities. Whether it is mold into different forms like stainless steel bars or medical bars are much reliable in their different areas.

To complete the process to get maximum high precision in steel products upon applying them to different manufacturing processes, various machining operations are also done to fully furnish and polish raw steel products to attain flawless accuracy and roundness. There comes a lot of metalworking operations done like metal constriction, bar chamfering, bar abrasive cutting, welding, metal grinding, and more to mold a raw steel material into steel bar or medical bar or any stainless steel product you desire.

One of the crucial and highly in-demand operations is the centerless grinding with its undisputed performance and its assured high quality results among all machining operations. This grinding function also results to an accurate shape of product result out of raw materials. Upon manufacturing your parts, you always look for preciseness and fineness of materials. To know more about the excellent steel products and various machining operations that can best help you in your pursuit of manufacturing your parts, call or contact  us now at (847)640-6050.