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美標(biāo)SAE 1018鋼的特性以及國(guó)標(biāo)對(duì)照
Component Wt. %
C 0.14 - 0.2
Fe 98.81 - 99.26
Mn 0.6 - 0.9
P Max 0.04
S Max 0.05
Material Notes:
Supplied as killed, semikilled, rimmed, and capped steel. Good weldability, relatively soft and strengthen with cold work during forming or drawing. Widely used in cold forming operations such as heading, upsetting, and extrusion. Used in the as-rolled condition as bar, shapes, sheet, and strip.
Physical Properties Metric English Comments
Density
Mechanical Properties
Hardness, Brinell 131 131
Hardness, Knoop 150 150 Converted from Brinell hardness.
Hardness, Rockwell B 73 73 Converted from Brinell hardness.
Hardness, Vickers 136 136 Converted from Brinell hardness.
Tensile Strength, Ultimate 450 MPa 65300 psi
Tensile Strength, Yield 380 MPa 55100 psi
Elongation at Break 16 % 16 % in
Reduction of Area 40 % 40 %
Modulus of Elasticity 200 GPa 29000 ksi Typical for steel
Bulk Modulus 140 GPa 20300 ksi Typical for steel
Poisson's Ratio 0.29 0.29 Typical For Steel
Shear Modulus 80 GPa 11600 ksi Typical for steel
Electrical Properties
Electrical Resistivity 1.59e-005 ohm-cm 1.59e-005 ohm-cm annealed condition;
Electrical Resistivity at Elevated Temperature 2.19e-005 ohm-cm 2.19e-005 ohm-cm annealed condition;
Electrical Resistivity at Elevated Temperature 2.93e-005 ohm-cm 2.93e-005 ohm-cm annealed condition;
Thermal Properties
CTE, linear
CTE, linear
CTE, linear
CTE, linear
Specific Heat Capacity 0.486 J/g-°C 0.116 BTU/lb-°F annealed; 50
Thermal Conductivity 51.9 W/m-K 360 BTU-in/hr-ft²-°F Typical steel
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