Glenn Posted April 13, 2009 Share Posted April 13, 2009 There has been some discussion between 1018 and A 36 and the differences, It is time to go to the references and get the facts. Ref onlinemetals 1018 Mild Steel Alloy 1018 is the most commonly available of the cold-rolled steels. It is generally available in round rod, square bar, and rectangle bar. It has a good combination of all of the typical traits of steel - strength, some ductility, and comparative ease of machining. Chemically, it is very similar to A36 Hot Rolled steel, but the cold rolling process creates a better surface finish and better properties. 1018 Mild (low-carbon) steel Minimum Properties Ultimate Tensile Strength, psi 63,800 Yield Strength, psi 53,700 Elongation 15.0% Rockwell Hardness B71 Chemistry Iron (Fe) 98.81 - 99.26% Carbon © 0.18% Manganese (Mn) 0.6 - 0.9% Phosphorus (P) 0.04% max Sulfur (S) 0.05% max A36 Mild Steel ASTM A36 steel is the most commonly available of the hot-rolled steels. It is generally available in round rod, square bar, rectangle bar, as well as steel shapes such as I-Beams, H-beams, angles, and channels. The hot roll process means that the surface on this steel will be somewhat rough. Note that its yield strength is also significantly less than 1018 - this means that it will bend much more quickly than will 1018. Finally, machining this material is noticeably more difficult than 1018 steel, but the cost is usually significantly lower. ASTM A36 Mild (low-carbon) steel Minimum Properties Ultimate Tensile Strength, psi 58,000 - 79,800 Yield Strength, psi 36,300 Elongation 20.0% Chemistry Iron (Fe) 99% Carbon © 0.26% Manganese (Mn) 0.75% Copper (Cu) 0.2% Phosphorus (P) 0.04% max Sulfur (S) 0.05% max For more detailed information go to ASTM.org Quote Link to comment Share on other sites More sharing options...
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