Introduction
Carbon steels are designated by AISI four-digit numbers. They contain carbon as the significant alloying element. Small quantities of molybdenum, chromium, nickel, aluminium, and copper are present in these steels. They also contain 0.4% silicon and 1.2% manganese.
The datasheet given below provides an overview of AISI 1215 carbon steel.
Chemical Composition
The chemical composition of AISI 1215 carbon steel is tabulated below.
Element Content (%) Iron, Fe 98.42 - 98.95 Manganese, Mn 0.75 - 1.05 Sulfur, S 0.260 - 0.35 Carbon, C 0.090 Phosphorous, P 0.040 - 0.090 Physical Properties
The following table shows the physical properties of AISI 1215 carbon steel.
Properties Metric Imperial Density 7.87 g/cm3 0.284 lb/in³ Mechanical Properties
The mechanical properties of the cold drawn AISI 1215 carbon steel are given in the following table.
Properties Metric Imperial Tensile strength 540 MPa 78300 psi Yield strength 415 MPa 60200 psi Bulk modulus (typical for steel) 140 GPa 20300 ksi Shear modulus (typical for steel) 80.0 GPa 11600 ksi Elastic modulus 190-210 GPa 27557-30458 ksi Poisson's ratio 0.27-0.30 0.27-0.30 Elongation at break 10% 10% Reduction of area 35% 35% Hardness, Brinell 167 167 Hardness, Knoop (converted from Brinell hardness) 188 188 Hardness, Rockwell B (converted from Brinell hardness) 85 85 Hardness, Vickers (converted from Brinell hardness) 175 175 Machinability (Based on 100 machinability for AISI 1212 steel.) 140 140 Thermal Properties
The thermal properties of AISI 1215 carbon steel are outlined in the following table.
Properties Metric Imperial Thermal expansion co-efficient (@ 20°C/68°F, typical steel) 11.5 µm/m°C 6.39 µin/in°F Thermal conductivity (typical steel) 51.9 W/mK 360 BTU in/hr.ft².°F
APPLICATIONS
Typical applications for this grade include pins, couplings, fittings, and bushings.
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