STEEL-HOT ROLLED

Hot Rolled – Commercial Quality Carbon Steel Plate
Hot Rolled Carbon Steel Plates are produced from basic oxygen process steel.
Applications: Storage tanks, storage bins, welded pipe, bridge construction, freight and passenger cars, barges, tankers, machinery construction, mining cars and equipment, bearing plates for buildings, other structural applications and various parts obtained by flame cutting.
Analysis:
3/4” and under: C - .25 Max. Mn - .60/1.15 P - .04 S - .05
Over 3/4” to 1 1/2”: C - .25 Max. Mn - .80/1.20 P - .04 S - .05
Over 1 1/2” to 2 1/2”: C - .26 Max. Mn - .80/1.20 P - .04 S - .05 Si - .15/.40
Over 2 1/2” to 4”: C - .27 Max. Mn - .85/1.20 P - .04 S - .05 Si - .15/.40
Over 4”: C - .29 Max. Mn - .85/1.20 P - .04 S - .05 Si - .15/.40
Mechanical Properties: (following values are average and are representative)
Tensile Strength (psi) 58/80,000
Yield Point (psi) 36,000 Min.
Elongation in 8”* (%) 18 Min.
* Subject to reduction for thickness under 5/16”
Machinability: 72% based on 1212 as 100%. Surface Cutting Speed: 120 ft/Min.
Weldability: Excellent. Easily welded by all welding processes and the resultant welds and joints are of extremely high quality. Grade of welding rod used depends on welding conditions such as thickness of section, design, service requirements, etc.
Hot Rolled – Commercial Quality Carbon Steel Sheet
Hot Rolled Commercial Quality Sheets are produced from low carbon rimmed, capped
or semi-killed steel, and are intended for uses involving simple bending or moderate drawing and welding. They can be bent flat on themselves in any direction at room
temperature without cracking on the outside of the bent portion.
Applications: From agricultural implements to automotive equipment, blower and
ventilating systems, hot air registers, stub barrels and drums to bins and partitions.
Hot Rolled Sheets may also be used for structural purposes where mechanical property test values are required, in which case ASTM A570 should be specified.
Analysis: C - .15 Max. Mn - .60 Max. P - .035 Max. S - .04 Max.
Weldability: Yes. Forming: Yes.
Hot Rolled Pickled and Oiled Commercial Quality Carbon Steel Sheet
Pickled and Oiled Sheets should be used when the tight oxide scale present on Hot Rolled Sheets is objectionable.
Applications: The superior smooth, clean surface is especially suited for stamping and ordinary drawing applications.
Hot Rolled Sheets may also be used for structural purposes where mechanical property test values are required, in which case ASTM A570 should be specified.
Analysis: C - .25 Mn - .90 Max. P - .04 Max. S - .05 Max.
Mechanical Properties: (following minimum properties apply to Grades 30 and 33)
Grade 30 Grade 33
Tensile Strength (psi) 49,000 52,000
Yield Point (psi) 30,000 33,000
Elongation (% in 2”)
(.0255” - .0635”) 21 18
(.0636” - .0971”) 24 22
(.0972” - .2299”) 25 23
Weldability: Yes. Forming: Yes.