The project is Design-Build, and the contractor is requesting the use of ASTM A36, Grade 50 rods, which I'm assuming are more readily available (thus cheaper). In looking at the AISC Manual, the tensile strength for A36 steel varies from 58-80 ksi. Further, the yield strength is specified as 36 ksi. ASTM A572 / A572M - 15 Standard Specification for High 1.1 This specification covers five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars. Grades 42 , 50 , and 55  are intended for riveted, bolted, or welded structures. Grades 60  and 65  are intended for riveted or bolted construction of bridges, or for riveted, bolted, or welded construction in other applications.
ASTM A572 50 Corten Steel Plates Sheastm a572 grade 50 vs a36 steela572 steel plate propertiesa572 60 steelastm a572 grade 50 speca572 materiala572 steel equivalentastm a572 gr 50a572 steel propertiesSome results are removed in response to a notice of local law requirement. For more information, please see here. ASTM A572 Grade 50 High Tensile Low alloy steel - JOIN ASTM A572 Grade 42 cold rolled steel ASTM A572 Grade 50 low alloy steel ASTM A572 Grade 60 high tensile steel. Henan Join-Win Im/Ex Corp. is a professional ASTM A572 steel stockist and supplier. We can supply different product type and good quality ASTM A572 Grade 42, ASTM A572 Grade 50, ASTM A572 Grade 60 steel.If you have any need of ASTM A572 steel please do not hesitate to contact us ASTM A572 Grade 50, 55, 60, 65 Steel Plates Specification A514/A514M:Specification for quenched and tempered alloy steel plate with high yiled strength, suitable for welding; A588/A588M Specification for High-Strength Low-Alloy Structural STeel, up to 50 ksi [245 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance; ASTM A572 Grade 50, 60 & 65 Data Sheet Properties
A572 Grade 50 has a smaller cross-section that can support the same or larger load than A36 steel or steels that are not structural grade. This directly correlates to the overall weight of the ramp where the higher the steels Yield Strength, the less the ramp can weigh. A572 Grade 50 has a 139% greater Yield Strength than A36 steel. ASTM A572 Steel Channel - High StrengthASTM A572 is a high-strength low-alloy (HSLA) steel with alloy content of columbium and vanadium, which strengthens the steel and provides higher yield point strength than ASTM A36. A572 HSLA steel channel is ideal for the applications where needs higher strength for it reduces the thickness and weight. ASTM A572 Steel Plate - A572 Grade 42, 50, 55, 60, 65 ASTM A572 steel plate is made of ASTM AA572, a High-Strength Low-Alloy, Columbium-Vanadium Structural Steel. There are five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars. Grades 42 , 50 , and 55  are best for riveted, bolted, or welded structures.
ASTM A572 Steel, grade 50 Categories:Metal; Ferrous Metal; ASTM Steel; Carbon Steel; Low Carbon Steel. Material Notes:High-strength low-alloy steel, structural quality:Vendors:No vendors are listed for this material. Tensile Strength, Yield :345 MPa:50000 psi:Elongation at Break :18 %:18 %:In 200 mm :21 %:21 %:In 50 mm:Bulk ASTM Weathering Steel Specifications Central Steel ServiceThis specification provides for a 65ksi minimum yield strength and an 80ksi minimum tensile strength plus the atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon steels with or without copper addition. ASTM-A572 Standard Specification for High-Strength Low A In the above tabulation, Grades 42, 50, and 60 [290, 345, and 415], are the yield point levels most closely approximating a geometric progression pattern between 36 ksi [250 MPa], min, yield point steels covered by Specification A36/A36M and 100 ksi [690 MPa], min, yield strength steels covered by Specification A514/A514M.
Mechanically, A572 and A529 are very similar. A572 has an ultimate tensile or breaking strength of 60,200 pounds per square inch, a tensile yield strength of 42,100 psi and a shear modulus of 11,600 ksi. A529 possesses an ultimate tensile strength of 72,500 psi, a tensile yield strength of 42,100 psi and a shear modulus of 11,600 ksi. Grade A572 Steel McMaster-CarrCombining strength with weldability and formability, A572 alloy steel is an economical choice for structural components, such as channels, beams, and framing. It has a low carbon content, making it easy to weld with a variety of welding methods. Stronger than other low-carbon steels, such as A36 steel, it handles heavy loads without fracturing. Tested using ASTM A572, these sheets and bars are Steel Bar Supplier - RyersonSteel Bar. Ryerson is a leader among North American metal suppliers in the steel bar market. We offer steel bar in a variety of shapes, including flat, round, half round, hexagon and square. Steel products are where Ryersons business began more than 170 years ago, and our buying power and reach make us a supplier of choice today.
A572 Grade 50 = The most economical of the high-strength low alloy (HSLA) group. A572 Grade 50 uses combinations of columbium, vanadium, and/or nitrogen to provide strength. Formability is good. Welding in the low and medium carbon grades is excellent. Steel Plate Comparisons Precision Grinding, Inc.Very good welding properties along with 36ksi yield strength. Considered a mild steel due to hardness. A572-42. A572-50. A572 grade 50 steel plate is a high-strength, low-alloy plate, specified for bridges, higher strength structural duties, and light pressure vessel requirements. Steel Structurals - Alro SteelASTM A992/A572 (Grade 50) Tensile Strength:65,000 min. PSI Yield Point:50,000 min. - 65,000 max. PSI Nominal (lbs./ft)Depth Weight A Depth of Section D Flange Thickness B Width of Flange C Thickness of Web A WeightC B Depth (lbs./ft.) Thickness of Web Width of Flange 6" 4.4 .114 1.844
A514/A514M:Specification for quenched and tempered alloy steel plate with high yiled strength, suitable for welding; A588/A588M Specification for High-Strength Low-Alloy Structural STeel, up to 50 ksi [245 MPa] Minimum Yield Point, with Atmospheric Corrosion Resistance; ASTM A572 Grade 50, 60 & 65 Data Sheet Properties