Tensile Test on AISI 1018 CF Steel

Testing Parameters

IDE 120 Tension Test with 1" Extensometer File name: 1018_cylindrical.is_metal.doc
Temperature		70.0 F		Initial diameter		0.623 in
Humidity		50.0%		Initial length		12 in
System of units		US Customary		Initial area		0.305 in2
Data collection interval		0.1000 sec		Final diameter		0.404 in
Crosshead speed		1 in/min		Final area		0.129 in2
Source for tensile strain		Strain 1
Gauge width 1		1.000
Strain auto balance		True
Extensometer removal at		100%
End of test sensitivity		20%

Results

Provided by Instron's "Bluehill Materials Testing Software."

Moduli Elasticity 34.1 Msi Resilience 0.255 ksi Toughness 9.14 ksi Major Events 0.2%-Offset Yield Max. Load Break Load (kip) 24.8 28.1 19.5 Extension (in) 0.196 0.603 1.058 Stress, Engineering (ksi) 81.4 92.2 63.9 Stress, True (ksi) 151.9 Strain (%) 0.44 5.64 10.4 Energy (ft-lbf) 6.5   231.8 Elongation, Total (%) 0.44 5.64 10.4 Elongation, Plastic (%) 5.36 10.2 Provided by Instron's "Bluehill Materials Testing Software."

Summary of Results

Property	Experimental Results1	Reference Values2	Percent Difference
Modulus of Elasticity	34.1 Msi	29 Msi	8.1%
Tensile Strength, Yield	81.4 ksi	60.2 ksi	15.0%
Tensile Strength, Ultimate	92.2 ksi	70.3 ksi	13.5%
Elongation at Break, Total	10.4% 3	18% 4	26.8%
Reduction of Area	57.9%	40%	18.3%
Modulus of Resilience	0.255 ksi
Modulus of Toughness	9.14 ksi

1. From Instron's "Bluehill Materials Testing Software."
2. From www.matweb.com for AISI 1018 Steel, as cold drawn, 16-22 mm (0.625-0.875 in) round.  Actual treatment of tested specimen unknown.
3. Over 1 inch length.
4. Over 50 mm length.