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Grade A679
Corresponding Standard ASTM A679/A679M-2024
Standard Specification for Steel Wire, High Tensile Strength, Cold Drawn
Classification Carbon Steel
A679 Chemical Element Composition Content (%)
Component C ① Si Mn ② P S
Minimum Value 0.65 0.15 0.2 - -
Maximum Value 1 0.35 1.3 0.04 0.05
① Carbon in any one lot shall not vary more than 0.13 %.
② Manganese in any one lot shall not vary more than 0.30 %
A679 Mechanical Properties
Diameter
mm		 Tensile Strength
σb
Mpa
0.5 2400~2650
0.55 2380~2620
0.6 2350~2600
0.65 2320~2580
0.7 2300~2550
0.8 2250~2500
0.9 2200~2450
1 2150~2400
1.1 2120~2380
1.2 2100~2350
1.4 2050~2300
1.6 2000~2250
1.8 1980~2220
2 1950~2200
2.2 1900~2150
2.5 1850~2100
2.8 1820~2050
3 1800~2000
3.5 1750~1950
4 1700~1900
4.5 1680~1880
5 1650~1850

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