Common Material Specifications

Ordering Details

The thickness of floor plate is measured at the thinnest point (does not include the lungs)

ASTM A786 Pattern No. 2 depicts a diamond tread pattern
ASTM A786 Pattern No. 4 depicts a bar tread pattern
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Aluminum (3003) floor plate is typically offered in a highly polished finish
Aluminum (6061) floor plate is typically offered in matte, mill finish

Stock Size

Steel tee is typically offered in 20 ft or 40 ft lengths
Stainless Steel (304 & 316) tee is typically offered in random lengths ranging from 20 ft to 24 ft
Aluminum (6061) tee is typically offered in 25 ft lengths
Aluminum (6063) tee is typically offered in 16 ft lengths

Stock Size

Steel round tube is typically offered in random lengths ranging from 17 ft to 24 ft
Stainless Steel round tube is typically offered in random lengths ranging from 17 ft to 24 ft
Aluminum round tube (extruded) is typically offered in 24 ft lengths
Aluminum round tube (drawn) is typically offered in 12 ft lengths

DOM vs Seamless

Drawn over Mandrel (DOM) tube is ERW then the welded tube is drawn through a die and mandrel to remove the weld seam and refine the tubing dimensions. A seamless tube is created from a solid billet, which is heated and pierced to create a hollow tube. The tube is then rolled or drawn to achieve the desired size and properties.
DOM tubing has higher tolerances, a smoother finish, typically cheaper, but a lower pressure rating than seamless tube.

Stock Size

Steel pipe is typically offered in 21 ft lengths
Stainless Steel Pipe is typically offered in random lengths ranging from 17 ft to 24 ft
Aluminum pipe is typically offered in 20 ft lengths

A500 vs A53

A500 pipe is intended for structural applications, offers greater strength, better straightness and is usually cheaper than A53 pipe.
A53 pipe is intended for mechanical and pressure applications, including uses in steam, water, gas, and air lines. A53 pipe undergoes hydrostatic testing, test pressure varies based on NPS, schedule, and grade (ex. Pipe 2 SCH 40 GR B is tested at 2,500 psi).

Stock Size

Rebar is typically offered in 20 ft lengths

A615 vs A706

A615 has a higher carbon content which makes it harder, more brittle, and less ductile
A706 can better absorb energy, making it a common choice for seisemic application
In most situations A615 needs to be preheated (200°F to 400°F) before welding as per AWS D1.4
Larger bars of A706 need to be preheated to 50°F before welding as per AWS D1.4

Deformed vs Plain

Rebar is offered as deformed or plain, defomred is more common
Plain Bar: steel bar without protrusions
Deformed Bar: steel bar with protrusions; a bar that is intended for use as reinforcement in reinforced concrete construction

Other Specifications & Grades

ASTM A615 is also offered in GR 75, but GR 40 and GR 60 are more readily available