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Download 1020 Spec sheet

1020 is one of the very commonly used plain carbon steels. It has a normal carbon content of 0.20% with approximately 0.50% manganese. It is a good combination of strength and ductility and may be hardened or carburized.


1020 steel is used for simple structural application such as cold headed bolts. It is often used in the case hardened condition.


Machinability is good at 65% compared to 1112 carbon steel as 100% baseline.


Formability is good by all conventional methods as the ductility of 1020 is good.


Readily weldable by all of the standard methods.


1020 may be hardened by heating to 1500 – 1600 F and then water quenching. It should then be tempered. More often it is used as case hardened by carburizing. The cost of doing any heat treatment to such a low carbon steel often precludes doing so for the modest return in mechanical properties obtained.


Forge at 2300 down to 1800 F.


Hot work in the range of 900 to 1200 F.


1020 steel is readily cold worked by all conventional methods. A stress relief anneal may be needed after extensive cold work.


A full anneal is done at 1600 to 1800 F followed by slow furnace cooling. This will give a tensile strength of about 65 ksi. A stress relief anneal may be done at 1000 F.


Not applicable.


Tempering, following heat treatment and quenching, at 600 to 1000 F depending upon strength level desired. A 1000 F temper gives a tensile strength of 90 ksi.


1020 steel hardens by cold working and by heat treatment, quenching and tempering.


Density (lb / cu. in.) 0.284
Specific Gravity 7.86
Specific Heat (Btu/lb/Deg F – [32-212 Deg F]) 0.107
Melting Point (Deg F) 2760
Poissons Ratio 0.3
Thermal Conductivity 360
Mean Coeff Thermal Expansion 6.7
Modulus of Elasticity Tension 30
Modulus of Elasticity Torsion 11


Form Round Bar
Condition Cold Drawn
Temper 68
Tensile Strength 64
Yield Strength 54
Elongation 24
Reduction of Area 54
Rockwell B79
Brinnell 126

Form Round Bar
Condition Hot Rolled
Temper 68
Tensile Strength 55
Yield Strength 30
Elongation 25
Reduction of Area 50
Rockwell B76
Brinnell 137


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