万博体育充值 - 万博体育百万取款 v3.4.25 安卓最新版

Standard:

ASTM A230
Standard Specification for Steel Wire, Oil Tempered Carbon Valve Spring Quality

Chemistry

Element	Composition, %
Carbon	0.60-0.75
Manganese	0.60-.090
Phosphorus, max	0.025
Sulfur, max	0.030
Silicon	0.15-0.35

Tensile Requirements

Diameter (Inch)	Tensile Strength, KSI Min	Tensile Strength, KSI Max	Reduction of Area, min, %
Less than 0.062	245	265	n/a
0.062 to 0.092, incl	240	260	n/a
Over 0.092 to 0.128, incl	235	255	40
Over 0.128 to 0.162, incl	230	250	40
Over 0.162 to 0.192, incl	225	245	40
Over 0.192 to 0.225, incl	220	240	40
Over 0.225 to 0.250, incl	215	235	40
Over 0.250	210	230	40

Permissible Variations in Wire Diameter

Diameter (Inch)	Permissible Plus and Minus	Permissible Out of Round
Less than 0.062	0.0005	0.0005
0.062 to 0.092, incl.	0.0008	0.0008
Over 0.092 to 0.148, incl.	0.001	0.001
Over 0.148 to 0.177, incl.	0.0015	0.0015
Over 0.177	0.002	0.002