ASTM A228 Steel (UNS K08500)

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ASTM A228 Steel (UNS K08500)
Categories:	Metal; Ferrous Metal; ASTM Steel; Carbon Steel; High Carbon Steel
Material Notes:	Cold drawn. High tensile strength and uniform mechanical properties. Music wire springs are not recommended for service temperatures above 121°C (250°F). Applications: High quality springs and wire forms subject to high stresses or requiring good fatigue properties.
Key Words:	spring steel, music wire, AMS 5112, UNS K08500
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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
Hardness, Rockwell C	41 - 60	41 - 60
Tensile Strength, Yield	1590 - 1760 MPa @Diameter 6.35 mm	231000 - 255000 psi @Diameter 0.250 in
	1640 - 1820 MPa @Diameter 5.26 mm	238000 - 264000 psi @Diameter 0.207 in
	1690 - 1860 MPa @Diameter 4.50 mm	245000 - 270000 psi @Diameter 0.177 in
	1740 - 1920 MPa @Diameter 3.81 mm	252000 - 278000 psi @Diameter 0.150 in
	1770 - 1950 MPa @Diameter 3.56 mm	257000 - 283000 psi @Diameter 0.140 in
	1800 - 1990 MPa @Diameter 3.18 mm	261000 - 289000 psi @Diameter 0.125 in
	1870 - 2070 MPa @Diameter 2.54 mm	271000 - 300000 psi @Diameter 0.100 in
	1940 - 2150 MPa @Diameter 2.00 mm	281000 - 312000 psi @Diameter 0.0787 in
	2020 - 2230 MPa @Diameter 1.60 mm	293000 - 323000 psi @Diameter 0.0630 in
	2090 - 2310 MPa @Diameter 1.30 mm	303000 - 335000 psi @Diameter 0.0512 in
	2170 - 2410 MPa @Diameter 1.00 mm	315000 - 350000 psi @Diameter 0.0394 in
	2250 - 2490 MPa @Diameter 0.810 mm	326000 - 361000 psi @Diameter 0.0319 in
	2350 - 2600 MPa @Diameter 0.610 mm	341000 - 377000 psi @Diameter 0.0240 in
	2500 - 2760 MPa @Diameter 0.400 mm	363000 - 400000 psi @Diameter 0.0157 in
	2600 - 2880 MPa @Diameter 0.300 mm	377000 - 418000 psi @Diameter 0.0118 in
	2750 - 3040 MPa @Diameter 0.200 mm	399000 - 441000 psi @Diameter 0.00787 in
	3030 - 3340 MPa @Diameter 0.100 mm	439000 - 484000 psi @Diameter 0.00394 in
Modulus of Elasticity	210 GPa	30500 ksi
Poissons Ratio	0.313	0.313	Calculated
Shear Modulus	80.0 GPa	11600 ksi

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	120 °C	248 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.70 - 1.0 %	0.70 - 1.0 %
Iron, Fe	97.8 - 99 %	97.8 - 99 %
Manganese, Mn	0.20 - 0.60 %	0.20 - 0.60 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	0.10 - 0.30 %	0.10 - 0.30 %
Sulfur, S	<= 0.030 %	<= 0.030 %

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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MSASTMA228 / 14072

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