AISI 1018 Steel, cold drawn
Categories: Metal; Ferrous Metal; Carbon Steel; AISI 1000 Series Steel; Low Carbon Steel

Material Notes: Medium low-carbon steel, has good weldability and slightly better machinability than the lower carbon steels.

Key Words: carbon steels, AMS 5069, ASTM A108, UNS G10180, AS 1442 K1018 (Australia), AS 1443 K1018, CSN 12020 (Czech), CSN 12022, AFNOR NF A33-101 AF42C20, DIN 1.0453, DIN C16.8, DGN B-301 1018 (Mexico), COPANT 331 1018 (Pan America), COPANT 333 1018, MST.T (Russia), ST.20A, ST.3, ST.3T, GOST M18S, GOST 23570 18ps, GOST 23570 18sp, GOST 5520 18K, GOST 5521 S, NBN 629 D37-2 (Belgium), NBN 630 E37-1, NBN 630 E37-2, NBN A21-221 C17KD, BDS 9801 S (Bulgaria), GB 715 ML3 (China), TS 302 Fe35.2 (Turkey), TS 346 Fe35, BS 970 080A17, DEF STAN95-1-1 C1018
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Physical PropertiesMetricEnglishComments
Density 7.87 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 126126
Hardness, Knoop 145145Converted from Brinell
Hardness, Rockwell B 7171Converted from Brinell
Hardness, Vickers 131131Converted from Brinell
Tensile Strength, Ultimate 440 MPa63800 psi
Tensile Strength, Yield 370 MPa53700 psi
Elongation at Break 15 %15 %In 50 mm
Reduction of Area 40 %40 %
Modulus of Elasticity 200 GPa29000 ksi
Bulk Modulus 159 GPa23100 ksiEstimated from elastic modulus
Poissons Ratio 0.290.29Typical for steel
Machinability 70 %70 %Based on AISI 1212 steel = 100%
Shear Modulus 78.0 GPa11300 ksiEstimated from elastic modulus
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity  0.0000159 ohm-cm
@Temperature 0.000 °C
0.0000159 ohm-cm
@Temperature 32.0 °F
annealed condition
 0.0000219 ohm-cm
@Temperature 100 °C
0.0000219 ohm-cm
@Temperature 212 °F
annealed condition
 0.0000293 ohm-cm
@Temperature 200 °C
0.0000293 ohm-cm
@Temperature 392 °F
annealed condition
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.486 J/g-°C
@Temperature >=100 °C
0.116 BTU/lb-°F
@Temperature >=212 °F
annealed
Thermal Conductivity 51.9 W/m-K360 BTU-in/hr-ft²-°Festimated based on similar materials
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.14 - 0.20 %0.14 - 0.20 %
Iron, Fe 98.81 - 99.26 %98.81 - 99.26 %As remainder
Manganese, Mn 0.60 - 0.90 %0.60 - 0.90 %
Phosphorus, P <= 0.040 %<= 0.040 %
Sulfur, S <= 0.050 %<= 0.050 %

References for this datasheet.

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