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carbon steel aisi 1018 is the most commonly available cold-rolled steels. 1018 demonstrates good strength, some ductility, and comparative ease of welding and machining. this material is also chemically similar to a36 hot rolled steel, but cold rolling creates a better surface finish and ultimately better properties. typically found in applications that include pins, rods, shafts, spindles, and sprockets.
chemical composition
the chemical composition of aisi 1018 carbon steel is outlined in the following table.
element | content (%) |
manganese, mn | 0.60-0.90 |
carbon, c | 0.15-0.20 |
sulfur, s | 0.05 (max) |
phosphorous, p | 0.04 (max) |
iron, fe | balance |
physical properties
the physical properties of this grade of carbon steel are as below.
properties | metric | imperial |
density | 7.87 g/cm3 | 0.284 lb/in3 |
mechanical properties
the following table shows mechanical properties of cold drawn aisi 1018 carbon steel.
properties | metric | imperial |
tensile strength | 440 mpa | 63800 psi |
yield strength | 370 mpa | 53700 psi |
modulus of elasticity | 205 gpa | 29700 ksi |
shear modulus (typical for steel) | 80 gpa | 11600 ksi |
poisson’s ratio | 0.29 | 0.29 |
elongation at break (in 50 mm) | 15% | 15% |
hardness, brinell | 126 | 126 |
hardness, knoop (converted from brinell hardness) | 145 | 145 |
hardness, rockwell b (converted from brinell hardness) | 71 | 71 |
hardness, vickers (converted from brinell hardness) | 131 | 131 |
machinability (based on aisi 1212 steel. as 100 machinability) | 70 | 70 |
