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Structural Stainless Steel

Penn Stainless can supply off the shelf & custom stainless steel structural products.  Please review our structural pages, call us, or fill out our Quick Quote form to learn more.

Also, see below to learn how laser fusion enables a larger range of stainless structural sizes and shapes  at cost effective prices.

Angles, Beams, Tees, Channels

Please visit our individual stainless steel structural product pages to learn more.

Stainless Steel Structural Items

« Stainless Steel Angle « Stainless Steel Rectangular Tube
« Stainless Steel Tees « Stainless Steel I Beams
« Stainless Steel Uneven Leg Angle « Stainless Steel Round Tube
« Stainless Steel Square Tube « Stainless Steel W Beams
« Stainless Steel Channel

Stainless Steel Structurals Products Laser Fused and Hot Rolled Custom Orders

Customers may place custom orders for  laser fused or hot rolled stainless steel structural shapes through Penn Stainless .

Laser Fused Stainless Steel Structural Shapes Custom Orders: 

  • Minimum Order Size is 2000 lbs.
  • Stainless Steel Grades:
    • Currently, all commercially approved austenitic stainless steels and duplex stainless steels are appropriate for laser fusion technology.
    • If you are interested in other grades, please ask.  Additional grades are under evaluation and should be approved for use soon.
    • Mixing grades within the same laser fused structural product to save cost is also an available option.
    • Shapes:
      • Laser Fused Stainless Steel products can be shaped to your exact requirements. Shapes are not limited to the standard stainless steel structural shapes that are typically available through hot-rolling.
      • Dimensions:
        • Laser Fused Stainless Steel products can be built to your exact dimensions.  They are not limited to the dimensions typically available with hot rolling.
          • Lengths up to 40’.
          • Thicknesses can be over .8”; although in some cases this will require use of hybrid welds (part laser fusion, part TIG welded)
          • Heights available up to 40”.
          • Heights available up to 80” for thickness .4” and less.  Note – Also, heights are available up to 80” for thicknesses greater than .4” using hybrid welds (part laser fusion, part TIG).   Details can be discussed at time of order.
          • Small sections (1”X1”) available as well, with a minimum thickness of 1/8”.
  • Mixing sizes within the same laser fused structural product is also an option.  For example, if you shape has three legs, each of the legs can have a different thickness.
  • Please call Penn Stainless for more details.  Also, you may send us your drawings, and we will quote to your exact requirements.

 

Hot Rolled Stainless Steel Structural Shapes Custom Orders: 

For very large lot sizes, customers may find it more economically feasible to utilize Hot Rolling technology rather than Laser Fusion.

  • Minimum lot size is typically 3,000-5,000 tons.
  • Please call Penn Stainless for more details. Also, you may send us your drawings, and we will quote to your exact requirements.

Laser Fusion is a highly effective process for producing stainless steel structural products, including angles, beams, tees, and channels. The resulting products have the same structural integrity as the corresponding products produced by hot rolling or extrusion. At the current time, all commercially available austenitic and duplex stainless steels are appropriate for laser fusion technology. Additional grades are under evaluation, and should be approved for use soon.

Laser fused channels, beams, tees, and angles are created by fusing individual stainless steel strips into one complete section. The fusions, which are made with powerful lasers, produce very small seams. Unlike conventionally welded sections, the laser fused shapes have no filler metal, no porosity, and no inclusions. The resulting products have an internal structure that is homogeneous and monolithic; effectively one piece. The strength characteristics are identical to the equivalent products produced by hot rolling or extrusion. In fact, laser fused channels, beams, angles and tees have a slightly higher strength at the fusion zone as compared to the parent materials. Also, the dimensional tolerances meet the same standards as hot rolled and extruded products.

Top Image: Depiction of the Fusion Zone Bottom Image: Simulation of the laser fusion process for T Bar. Benefits:

Increased Availability

The primary benefit of laser fusion technology is that it offers a cost effective solution for stainless steel channel, beam, tee, and angle product sizes that have not been readily available in the past. Specifically, laser fusion enables the following:

  • Greater selection of off the shelf sizes for stainless steel 304/L and 316/L angles, beams, tees and channels. Structural products are now typically available in the same dimensions as the corresponding carbon profiles.
  • Larger size range for custom products: Laser fused stainless steel angles, beams, tees, and channels can be produced in lengths up to 40 feet, widths up to 40 inches, and heights up to 80 inches. Small sections (1 inch X 1 inch) can be produced as well, with a minimum thickness of 1/8 inch.
  • Increased product flexibility for custom orders: Different thicknesses and/or different grades of stainless steel materials, including duplex stainless steels, may be laser fused into one section.
  • Cost effective solution for custom orders. In most cases, there are no tooling costs.
  • See the Custom Orders Guideline tab for more specific details on Penn Stainless Product’s abilities to meet your custom needs.

While the recent use of laser fusion technology has led to the general availability of many sizes that have not been readily available in the past, it should be noted that hot rolling is a more cost efficient solution for many sizes. Specifically, hot rolling is an excellent choice for commonly used small and mid-size structural products. Thus, the true benefit of laser fusion technology is that it offers a cost effective solution for large sizes and special sizes that are not efficient to produce by hot rolling. This includes less common sizes due to the fact that hot rolling requires high set up costs. Also, it includes larger sizes since hot rolling cannot be used with larger products.

Easier to Polish, Clean and Maintain

Another benefit of laser fusion technology is that it results in stainless steel channels, beams, angles, and tees that are easier to polish, clean and maintain as compared to hot rolled or extruded products. This occurs for two reasons. First, laser fused stainless steel beams, channels, tees, and angles generally feature small radii measuring a maximum of .02 inches. This results in non-tapered, sharp edges which are easier to work with than the tapered edges that are produced by extrusion or hot rolling. Secondly, laser fused sections generally have a much better surface finish than hot-rolled or extruded products, as the raw material components are cut from high quality hot rolled plate or made from cold drawn flats. Upon completion of the laser fusion process, the sections are straightened and then bead blasted and passivated in an acid solution. This means impurities caused by the fusion process are no longer visible. Since box, angle, and channel sections generally have external seams, they are machined prior to bead blasting. With this operation seams are no longer visible, i.e. the surfaces are flat and even.

Far Superior Results as Compared to Conventional Welding

Conventional welding was (and is) rarely used in the production of stainless steel structural profiles because it leads to warping, as well as to corrosion and other problems associated with the heat affected zone area. Laser fusion solves the problems associated with conventional welding. Unlike conventionally welded sections, laser fused shapes have no filler metal, no porosity, and no inclusions. Furthermore, laser fused products have an extremely small heat affected zone, typically around 1/16 inch. Due to this very small heat affected zone, and also the grit blasting and passivation processes that are used following the fusion steps, laser fused sections have much less potential for corrosion than conventionally welded sections. Finally, laser fusion does not lead to warping. Laser fused structural products meet the same straightness criteria as hot rolled and extruded structural products. Because of the limitations with conventional welding, prior to laser fusion most industries relied on carbon profiles for channel, beam, tee, and angle sizes not available in stainless steel by extrusion or hot rolling. Now that these products are available through laser fusion, it has opened the doors for using stainless steel structural products in many more applications than were feasible in the past.

Domestic and DFARS Compliant Product

There is now a USA mill that produces domestic laser fused products. In addition, Laser fused stainless steel beams, channels, tees and angles are DFARS compliant out of Switzerland.

Applications:

Laser Fused channels, beams, angles and tees are used in many industries. The revolutionary design freedoms provided by laser fused stainless steel profiles make these products very attractive for architectural and aesthetic uses, as well as structural. Some of the more common applications include general building and construction, waste water treatment, chemical, petrochemical, pharmaceutical, pulp and paper, and food processing. This is relatively new product line, and new uses and applications are continually evolving.

Quality and Certifications:

All laser fused angles, beams, tees and channels sold through Penn Stainless Products are 100% inspected to ensure that full penetration and seam continuity are achieved for each length. The sections undergo a stringent quality control process, involving continuous checks with special measuring equipment. This measuring equipment is checked at regular intervals by TÜV (external approving authority) to verify its reliability. All appropriate approvals, certifications, and full traceability with original mill test reports are available by request for all products. Laser fused channels, beams, angles, and tees meet the following certifications:

  • ASTM A1069/A1069M-11 (Specific to the laser fusion process)
  • ASTM A479/A479M-11 (Related to laser fusion and hot rolling processes)
  • ASTM A276 (Specific to Stainless Steel Bars and Shapes)
  • ASME SA479 (Related to laser fusion and hot rolling processes)
  • ISO 13919-1 (Verifies the integrity of the laser fused products)
  • ISO 15609-4 (Verifies the integrity of the laser fused products)
  • ISO 15614-11(Verifies the integrity of the laser fused products)

 

Hot Rolling technology can be used to create stainless steel beams, tees, angles, channels and other structural shapes.  Conventional Hot Rolling technology enables the formation of stainless steel structural shapes by passing metal billets through a series of Rollers at high temperatures.  Also, it is possible for Hot Rolled stainless steel structural shapes to be created from wire rods that are fed continuously through Hot Rollers.

Benefits:

While hot Rolling, laser fusion and extrusion all lead to the same high integrity stainless steel channels, beams, angles and tees, the primary benefit of Hot Rolling is that it is usually the lowest cost solution for common sizes of small and mid-range structural shapes that are available off the shelf.  Also, it can be cost effective for custom orders of large lot sizes of small and mid-range products.

Limitations:

Utilizing hot Rolling technology to produce stainless steel beams, angles, tees and channels has the following limitations.

  • Hot Rolling is not typically utilized for large size stainless steel structural products due to limitations in production technology, as well as the fact that hot Rolling larger sizes can lead to surface defects.
  • Hot Rolling has larger set up costs than laser fusion, and thus, is not typically a cost effective solution when ordering custom product in batch quantities less than 3-5 tons.
  • Hot Rolling results in tapered corners, which are not as easy to polish, clean and maintain, as the square corners produced with laser fusion technology. It should be noted, however, that this is typically considered a minor inconvenience as compared to the cost benefits that can be achieved when purchasing off the shelf hot Rolled products.

Product availability:

Typically, hot Rolled stainless steel shapes and sizes off the shelf availability matches the carbon profiles listed in the American Standard Systems for small and mid-range products in grades 304/L and 316l.  In addition, hot Rolled stainless steel structural shapes can be produced by customer order.  Minimum quantities that are considered economically feasible are typically in the 3-5 ton range.

Applications:

Hot Rolled Stainless Steel channels, beams, tees, angles and other structural shapes are used in many industries.  Some of the more common ones include general building and construction, waste water treatment, chemical, petrochemical, pharmaceutical, pulp and paper, and food processing.  Given the ready availability of a wider range of sizes in recent years, new uses and applications are continually evolving.

DFARS Compliant:  

DFARS compliant hot rolled stainless structural shapes are available for some sizes.  It should be noted, however, that a much broader size range of DFARS compliant structural products are available when purchasing laser fused products.

Quality and Certifications:

Hot Rolled stainless steel angles, beams, tees and channels sold through Penn Stainless Products meet all of appropriate approvals and certifications, as listed below.  Also, full traceability with original mill test reports are available by request for all products.  (double check with Bobby that I have included all relevant ones)

  • ASTM A479/A479M-11 (Related to laser fusion and hot Rolling processes)
  • ASTM A276 (Specific to Stainless Steel Bars and Shapes)
  • ASME SA479 (Related to laser fusion and hot Rolling processes)

Certifications

Extrusion is the process by which metal is squeezed into a closed cavity through a tool, known as a die using either a mechanical or hydraulic press. As a result, long straight metal parts are produced. The cross-sections that can be produced vary from solid round, rectangular, to T shape, L Shape, tubes and many other different types. Extruded metal often minimizes the need for secondary machining, but do not have the same dimensional accuracy or surface finish as machined parts.

Cold Extrusion: Cold extrusion is the process done at room temperature or slightly elevated temperatures. This process can be used for most materials, such as lead, tin, aluminum alloys, copper, titanium, molybdenum, vanadium, steel. Examples of parts that are cold extruded are collapsible tubes, aluminum cans, cylinders, gear blanks.

The advantages of cold extrusion are:

  • No oxidation
  • Good mechanical properties due to severe cold working as long as the temperatures created are below the re-crystallization temperature.
  • Good surface finish with the use of proper lubricants.

 

Hot Extrusion: Hot extrusion is done at fairly high temperatures, approximately 50 to 75 % of the melting point of the metal. Typical parts produced by extrusions are trim parts used in automotive and construction applications, window frame members, railings, aircraft structural parts.

 

Call us at 1-800-222-6144 for more information