ASTM A1011 SS Grade 50 or A1011 HSLAS Grade 50. JIS SM490B is also popular mainly in Asia. Unlike most AISI grades such as 1018, 1141, or 4140, American Society for Testing and Materials A36 metal is not designated by chemical composition. Chemistry for example: C 0.26, Cu 0.2, Mn 0.8 - 1.2, Si 0.40, P 0.04 max, S 0.05 max for A36, C 0.23, Mn 1.35, Si 0.4, V 0.01-0.05, Cb 0.005-0.05, P 0.04, S 0.05 for A572 gr 50. Their average alloy composition is basically identical. ASTM A572 Grade 50 is considered a "workhorse" grade and is widely used in many applications. Steel mills produce channel and heavy beams with Grade 50. Chemical composition A36 - 04b A36 0.26 0.05 0.04 ≤0.40 A572 - 04 Grade 42 0.21 ≤1.35 0.05 0.04 ≤0.40 Grade 50 0.23 ≤1.35 0.05 0.04 ≤0.40 The ASTM A572 specification is the Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel for plates used in general construction and structural applications. Properties with values for just one material (1, in this case) are not shown. ASTM A572 includes five grades with specified minimum yield strengths of 42, 50… Both ASTM A572 grade 50 and hot rolled SAE-AISI 1018 are iron alloys. of a hydro project indicate, particularly, for the gates to use steel ASTM A572 Gr 50 or its equivalent S355JR according to EN 10025. ASTM A572 Gr42 steel plate also named High Tensile Low alloy Ni-V steel.The delivery station usually are hot rolled,control rolled,or nomalized. Hello everybody: The Technical Specifications for metal works (gates, trash racks, etc.) The different principal alloying parts are the same as the other two ASME SA 516 grades. With the expanding of International business of China, the GB Q345B also spread into the globle construction site and known to many steel insiders. The HSLAS grade is closer to an exact match to A572, but either is going have the same basic performance. 8" Elongation % 42 42 60 20 50 50 65 18 55 55 70 17 60 60 75 16 65 65 80 15 Chemical Composition The following composition properties are ASTM specifications for the A572 grades. You are just concentrating on mechanicals I think. Material Properties The following material properties are ASTM specifications and will be confirmed on the Mill Test Report. ASTM A572. astm a36 astm a572 astm a588 astm a709 csa g40.21 38w / 260w csa g40.21 44w / 300w csa g40.21 50w / 350w csa g40.21 50a / 350a astm a656 astm a830 aisi 1045 Alloy & Abrasion Resistant Steel Plate AR235 / AR200 / AR Medium AR400F AR450F AR500F AR400 Flat Bars ASTM A514 ASTM A829 AISI 4130/AISI 4140 The Contractor is trying to change that material to steel Q345B (chinese material and code). In addition, ASTM A572 Grade 50 is famous for its increased resistance to atmospheric corrosion. We mainly see these two low alloy steel grade from two factors (chemical composition and mechanical property). > ASTM A572 Grade 50 Up One. Grade Yield Point (ksi) Tensile Strength (ksi) Min. There are 31 material properties with values for both materials. The SS grade is probably more readily available. Some specs specify the furnace method, some specify the heat treat. CS grades have no defined yield or tensile strength requirement. Hot Rolled SAE-AISI 1018. ASTM A572 Grade 50 vs. Many our end users customers asked Xinsteel’s engineers steel grades equivalent matters,one of them is S355JR in EN 10025-2 and A572 Grade 50 in ASTM (or SA572 Grade 50 in ASME).So whether S355JR steel plates can be replaced by A572Gr.50 steel plates ?. Among low alloy steel ASTM A572 Gr 50 equivalent material, EN S355JR is most widely used in the structural engineering and construction industries. An ASTM specification contains a whole host of specifications other than the mechanicals. 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