Mechanical properties of oil quenched-tempered spring wire

Mechanical properties of oil quenched-tempered spring steel wire (from GB/T 18983-2003)

	Diameter/mm	Tensile Strength					Section reduction 8/%≥
		FDC	FDCrV-A	FDCrV-B	FDSiMn	FDCrSi	Section reduction 8/%≥
		TDC	TDCrV-A	TDCrV-B	TDSiMn	TDCrSi 」	FD	TD
Static Fatigue Strength Level	0.5~0.8	1800~2100	1800~2100	1900~2200	1850~2100	2000~2250	45	45
	>0.8~1.0	1800~2060	1780~ 2080	1860~2160	1850~2100	2000~2250	45	45
	>1.0~1.3	1800~2010	一 17502010	1850~ 2100	1850~2100	2000~2250	45	45
	>1.3~1.4	1750~1950	1750~1990	1840~2070	1850~2100	2000~2250	45	45
	>1.4~1.6	1740~1890	1710~1950	1820~2030	1850~2100	2000~2250	45	45
	>1.6~2.0	1720~1890	1710~1890	1790~1970	1820~2000	2000~2250	45	45
	>2.0~2.5	1670~1820	1670~ 1830	1750~1900	1800~ 1950	1970~2140	45	45
	>2.5~2.7	1640~ 1790	1660~ 1820	1720~1870	1780~ 1930	1950~2120	45	45
	>2.7~3.0	1620~1770	1630~1780	1700~1850	1760~1910	1930~2100	45	45
	>3.0~3.2	1600~1750	1610~1760	1680~1830	1720~1870	1900~2060	40	45
	>3.2~3.5	1580~1730	1600~1750	1660~1810 I	1720~1870	1900-2060	40	45
	>3.5~4.0	1550~1700	1560-1710	1620~1770	1710~1860	1870~2030	t 40	45
	>4.0~4.2	1540~1690	1540~1690	1610~1760	1700~1850	1860~ 2020	40	45
	>4.2~4.5	1520-1670	1520~1670	1590~1740	1690-1840	1850-2000	40	45
	>4.5~4.7	1510~1660	1510~1660		1680-1830	1840-1990	40	45 45
	>4.7~5.0 >5.0-5.6	1500-1650	1500~1650	1580-1730 1560-1710	1670-1820	1830-1980	40
		1470-1620	1460~1610	1540-1690	1660-1810	1800-1950	35	40
	>5.6~6.0	1460~1610	1440~1590	1520~1670	1650-1800	1780-1930	35	40
	>6.0~6.5	1440-1590	1420~1570	1510~1660	1640-1790	1760-1910	35	40
	>6.5~7.0	1430~1580	1400-1550	1500-1650	1630-1780	1740-1890	35	40
	>7.0~8.0	1400~1550	1380~1530	1480-1630	1620-1770	1710-1860	35	40
	>8.0-9.0	1380~ 1530	1370~1520	1470~1620	1610-1760	1700-1850	30	35
	>9.0~10.0	1360~1510	1350~1500	1450~1600	1600-1750	1660-1810	30	35
	>10.0-~12.0	1320~1470	1320-1470	1430~1580	1580-1730	1660-1510	30
	>12.0~14.0	1280~1430	1300~1450	1420~1570	1560-1710	1620-1770	30
	>14.0~15.0	1270~1420	1290~ 1440	1410~1560	1550-1700	1620-1770
	>15.0~17.0	1250~1400	1270~1420	1400~1550	1540~1690	1580-1730

Diameter /mm		Tensile Strength					Section reduction 8/%≥
		VDC	VDCrV-A	VDCrV-B		VDCrSi
High fatigue strength	0.5~0.8	1700-2000	1750~1950	1910~2060		2030-2230
	>0.8~1.0	1700~1950	1730~1930	1880-2030		2030~2230
	>1.0~1.3	1700~1900	1700~1900	1860~2010		2000-2250	45
	>1.3~1.4	(1700~1850	1680~1860	1840~1990		2030-2230	45
	>1.4~1.6	1670~1820 [	1660~ 1860	1820~1970		2000~2180	45
	>1.6~2.0	1650~1800	1640~1800	1770-1920		1950-2110	45
	>2.0~2.5	1630~ 1780	1620~1770	1720~1860		1900~2060	45
	↑ >2.5~2.7	1610~1760	1610~1760	1690~1840		1890~2040	45
	>2.7-3.0	81590~1740	1600~1750		1660~1810 (	1880~2030	45
	>3.023.2	1570~1720	1580~ 1730	1640~ 1790		1870-2020	45
	>3.2~3.5	1550~1700	1560~1710	1620~ 1770		1860-2010	45
	>3.5~4.0	1530~1680	1540~1690	1570~1720		1840~1990	45
	>4.0~4.5	1510-1660	1520~1670	1540~1690		1810~ 1960	45
	>5.0~5.6	1470~ 1620	1480~1630		1490~1640 OS	↑ 1750-1900	40
	>5.6~6.0	1450~1600	1470~1620		1470~1620	1730~1890	0 40
	>6.0~6.5	1420-~1570	1440~1590	1440~ 1590		1710-1860	40
	>6.5~7.0	1400~1550	1420~1570	1420~1570 ()		1690~1840	40
	>7.0~8.0	1370~1520	1410~1560	1390~ 1540		1660~1810	40
	,>8.0~9.0	1350~1500	1390~1540	1370~ 1520		1640~1790	35
	>9.0-~10.0	1340-1490	1370~1520	1340~1490		1620~ 1770	35

Note: 1. When the diameter of FDSiMn and TDSiMn is not greater than 5.0mm, the shrinkage at break should not be less than 35%; when the diameter is greater than 500mm to 14.00mm, the shrinkage at break should not be less than 30%.

2.The allowable fluctuation range of the tensile strength of the steel wire in a plate or a shaft is ①VD grade steel wire should not exceed 50wPa, ②TD grade steel wire should not exceed 6oMpa | ③FD grade steel wire should not exceed 70MPa.

P.S As a professional custom spring maker in China, we offer quality custom spring services,such as

Mechanical properties of oil quenched-tempered spring steel wire (from GB/T 18983-2003)

Related Products