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Steel Beams

I-Beams

Stacked I Beams I-beams, also known as h-beams have and I or h cross section. The horizontal elements of the “I” are flanges while the vertical element is the “web”. I-beams are commonly made of structural steel but can be formed out of aluminum. I-beams are most widely used in construction and can have an application for use in both beams as well as columns. Arco steel offers many different sizes, lengths and specifications for I -beams.

Specifications

ASTM A36 – Standard specification for carbon structural steel. This specification covers shapes of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.

ASTM A572 – Standard specification for high-strength low-alloy structural steel. This specification covers five grades of high-strength low-alloy shapes intended for riveted, bolted, or welded construction of bridges or for other construction applications.

ASTM A588 – Standard specification for high-strength low-alloy structural steel. This specification covers shapes for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability is important. The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon steels with or without copper addition.

ASTM A709 – Standard specification for carbon and high-strength low-alloy shapes. This specification covers shapes and bars intended for use in bridges. Seven grades are available in four yield strengths.

ASTM A992 – Standard specification for steel for structural shapes for use in building framing. This specification covers rolled shapes for use in building framing or bridges, or for general structural purposes.

Wide Flange Beams

Wide flange beams have flanges that are nearly parallel to the web of the material unlike the traditional I-beam. Wide flange can be found in many structural applications such as bridges and buildings. Arco steel offers many different sizes, lengths and specifications for wide flange beams.

Specifications

ASTM A36 – Standard specification for carbon structural steel. This specification covers shapes of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.

ASTM A572 – Standard specification for high-strength low-alloy structural steel. This specification covers five grades of high-strength low-alloy shapes intended for riveted, bolted, or welded construction of bridges or for other construction applications.

ASTM A588 – Standard specification for high-strength low-alloy structural steel. This specification covers shapes for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability is important. The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon steels with or without copper addition.

ASTM A709 – Standard specification for carbon and high-strength low-alloy shapes. This specification covers shapes and bars intended for use in bridges. Seven grades are available in four yield strengths.

ASTM A992 – Standard specification for steel for structural shapes for use in building framing. This specification covers rolled shapes for use in building framing or bridges, or for general structural purposes.

Bars

Merchant bar products are comprised of hot rolled and cold finished carbon types as well as a number of sub-categories of shapes. Arco steel offers many different sizes, lengths and specifications for merchant bar.

Types of Bars:
HR Rounds
HR Squares
HR Strip
HR Flats
CR Bar
Reinforcing Bars (Rebar)

Specifications – Hot Rolled

Merchant bar quality – a group of commodity steel shapes that consist of rounds, squares, flats, strips, angles and channels, which fabricators, steel service centers and manufacturers cut, bend and shape into products. Merchant products require more specialized processing than reinforcing bar.

M1020 – a low carbon, general purpose, merchant quality steel. Suitable for forming and welding.

M1044 – medium carbon bars that are used where greater strength is required. Due to higher carbon content this grade is easily heat treatable but does not weld easily.

ASTM A588 – this specification covers high-strength low-alloy bars and is primarily intended for use in bridges and buildings where strength and corrosion resistance is a factor.
Cold finished

Low Carbon 1018 – a low carbon steel with a medium manganese content. Has good hardening properties, fair machinability and is excellent for cold bending and forming operations. Readily brazed and welded. Suitable for shafting and for applications that do not require the greater strength of high carbon and alloy steels. Conforms to ASTM A108 and AMS 5069. (not applicable to bars under 2-15/16 and sizes lighter than 29.34 Lbs. per foot).

Ground & Polished Shafting – extreme size accuracy, straightness and concentricity to minimize wear in high speed applications. Turned, ground and polished bars can be machined unsymmetrically, as in key-seating, with minimum distortion because cold drawing strains are not developed. Drawn, ground & polished bars combine the strength advantages of cold drawn stock with extra accuracy and lustrous finish. Conforms to ASTM A108 and QQ-S-637.

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