ASTM A229 Oil-tempered Steel Wire, Class II

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ASTM A229 Oil-tempered Steel Wire, Class II
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; ASTM Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	Pretempered steel wire used for mechanical springs and wire forms
Key Words:	UNS K07001
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Physical Properties	Metric	English	Comments

Density	7.80 g/cc	0.282 lb/in³	Typical of ASTM Steel

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	1320 - 1490 MPa @Diameter 15.9 mm	191000 - 216000 psi @Diameter 0.626 in
	1350 - 1520 MPa @Diameter 12.7 mm	196000 - 220000 psi @Diameter 0.500 in
	1420 - 1590 MPa @Diameter 9.53 mm	206000 - 231000 psi @Diameter 0.375 in
	1440 - 1610 MPa @Diameter 7.92 mm	209000 - 234000 psi @Diameter 0.312 in
	1450 - 1630 MPa @Diameter 6.35 mm	210000 - 236000 psi @Diameter 0.250 in
	1490 - 1660 MPa @Diameter 5.26 mm	216000 - 241000 psi @Diameter 0.207 in
	1590 - 1770 MPa @Diameter 4.11 mm	231000 - 257000 psi @Diameter 0.162 in
	1730 - 1940 MPa @Diameter 3.05 mm	251000 - 281000 psi @Diameter 0.120 in
	1830 - 2040 MPa @Diameter 2.00 mm	265000 - 296000 psi @Diameter 0.0787 in
	1920 - 2120 MPa @Diameter 1.60 mm	278000 - 307000 psi @Diameter 0.0630 in
	1960 - 2160 MPa @Diameter 1.40 mm	284000 - 313000 psi @Diameter 0.0551 in
	2050 - 2250 MPa @Diameter 1.00 mm	297000 - 326000 psi @Diameter 0.0394 in
	2140 - 2350 MPa @Diameter 0.810 mm	310000 - 341000 psi @Diameter 0.0319 in
	2190 - 2390 MPa @Diameter 0.660 mm	318000 - 347000 psi @Diameter 0.0260 in
	2230 - 2440 MPa @Diameter 0.510 mm	323000 - 354000 psi @Diameter 0.0201 in
Modulus of Elasticity	200 GPa	29000 ksi	Typical Carbon Steel
Bulk Modulus	160 GPa	23200 ksi	Typical for Steel
Poissons Ratio	0.29	0.29	Typical Carbon Steel
Shear Modulus	80.0 GPa	11600 ksi	Typical for Steel

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000170 ohm-cm	0.0000170 ohm-cm	Typical Carbon Steel

Thermal Properties	Metric	English	Comments
CTE, linear	12.0 µm/m-°C	6.67 µin/in-°F	Typical Carbon Steel
Specific Heat Capacity	0.470 J/g-°C	0.112 BTU/lb-°F	Typical Carbon Steel
Thermal Conductivity	52.0 W/m-K	361 BTU-in/hr-ft²-°F	Typical Carbon Steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.55 - 0.85 %	0.55 - 0.85 %
Iron, Fe	98.29 %	98.29 %	as balance
Manganese, Mn	0.30 - 1.2 %	0.30 - 1.2 %
Phosphorus, P	<= 0.040 %	<= 0.040 %
Silicon, Si	0.10 - 0.35 %	0.10 - 0.35 %
Sulfur, S	<= 0.030 %	<= 0.030 %

References for this datasheet.

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MSA229II / 142770

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