JIS S20CK Carbon Steel

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JIS S20CK Carbon Steel
Categories:	Metal; Ferrous Metal; Carbon Steel; AISI 1000 Series Steel; Low Carbon Steel
Material Notes:	Case Hardening. S20CK is comparable to JIS SWRCH20A, JIS SWRCH20K, JIS S20C, UNS G10200, and AISI 1020 - the carbon and manganese limits are identical and they differ only in silicon specification and impurity limits (SWRCH20A has a low level of aluminum specified). Applications include parts in the case hardened condition where core strength is not critical, and for shafts of larger cross section that are not highly stressed. Other uses include lightly stressed gears with hard wearing surfaces and case hardened pins and chains. MatWeb has multiple entries with mechanical property data for different forms and heat treatments of AISI 1020.
Key Words:	JIS G4051(79) S20CK. Comparable to JIS SWRCH20A, JIS SWRCH20K, JIS S20CK, UNS G10200, AISI 1020
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Physical Properties	Original Value	Comments

Density	7.87 g/cc	Estimated by MatWeb

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	186 GPa	(AISI 1020)
Poissons Ratio	0.29	(AISI 1020)

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000159 ohm-cm @Temperature 0.000 °C	(AISI 1020)
	0.0000219 ohm-cm @Temperature 100 °C	(AISI 1020)
	0.0000292 ohm-cm @Temperature 200 °C	(AISI 1020)

Thermal Properties	Original Value	Comments
CTE, linear	11.7 µm/m-°C @Temperature 20.0 - 100 °C	(AISI 1020)
	12.1 µm/m-°C @Temperature 20.0 - 200 °C	(AISI 1020)
	12.8 µm/m-°C @Temperature 20.0 - 300 °C	(AISI 1020)
	13.3 µm/m-°C @Temperature 20.0 - 400 °C	(AISI 1020)
	13.9 µm/m-°C @Temperature 20.0 - 500 °C	(AISI 1020)
	14.4 µm/m-°C @Temperature 20.0 - 600 °C	(AISI 1020)
	14.8 µm/m-°C @Temperature 20.0 - 700 °C	(AISI 1020)
Specific Heat Capacity	0.486 J/g-°C @Temperature >=100 °C	(AISI 1020)
	0.519 J/g-°C @Temperature 150 - 200 °C	(AISI 1020)
	0.599 J/g-°C @Temperature 350 - 400 °C	(AISI 1020)

Component Elements Properties	Original Value	Comments
Carbon, C	0.17 - 0.23 %
Chromium, Cr	<= 0.20 %	Ni + Cr < 0.30%
Copper, Cu	<= 0.25 %
Iron, Fe	98.1 - 99.4 %	As remainder
Manganese, Mn	0.30 - 0.60 %
Nickel, Ni	<= 0.20 %
Phosphorus, P	<= 0.025 %
Silicon, Si	0.15 - 0.35 %
Sulfur, S	<= 0.025 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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AISI 1020 Steel, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, 175°C (350°F) temper, 13 mm (0.5 in.) round
JIS SWRCH20A Carbon Steel
AISI 1020 Steel, cold rolled
AISI 1020 Steel, normalized at 870°C (1600°F)

MZJS20CK / 231163

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