Hard Drawn Steel Wire

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Hard drawn spring wire

Hard drawn spring wire

Product presentation

Mm	B Grade	C Grade	D Grade	Torsions		A Grade
0.3	2010-2400	2300-2700	2640-3040	BC	D
0.35	1960-2350	225--2650	2600-2990	20	18	2580-2780
0.4	1910-2300	2250-2650	2600-2990	20	18
45	1800-2260	2200-2600	2550-2940	20	18
0.5	1800-2260	2200-2600	2550-2940	20	18
0.6	1760-2160	2110-2500	2450-2840	20	18
0.7	1710-2060	2010-2400	2060-2450	20	18	1780-1980
0.8	1710-2060	2010-2400	2400-2840	20	18
0.9	1710-2060	2010-2350	2350-2750	20	18
1	1660-2010	1960-2300	2300-2690	20	18
1.2	1620-1960	1910-2250	2250-2550	20	18	2180-2380
1.4	1620-1910	1860-2210	2150-2450	20	18
1.6	1570-1860	1810-2160	2100-2400	20	18
1.8	1520-1810	1760-2110	2010-2300	20	18	1580-1780
2	1470-1810	1710-2010	1910-2200	20	18
2.2	1420-1710	1660-1960	1810-2110	15	13
2.5	1420-1710	1660-1960	1760-2060	15	13
2.8	1370-1670	1620-1910	1701-2010	15	13
3	1370-1670	1570-1860	1710-1960	15	13
3.20-3.50	1320-1620	1570-1810	1690-1910	12	8
4	1320-1620	1520-1700	1630-1860	12	8
4.5	1320-1570	1520-1760	1620-1860
5	1320-1570	1470-1710	1570-1810
5.5	1270-1520	1470-1710	1470-1710
6	1220-1470	1420-1660	1520-1760
6.3	1220-1470	1420-1610
7	1170-1420	1370-1570
8	1170-1420	1370-1570
9	1130-1320	1320-1520
10	1130-1320	1320-1520
11	1080-1270	1270-1470
12	1080-1270	1270-1470
13	1030-1220	1220-1420

Chemical component:

Si	0.17～0.37
S	≤0.030
Cr	0.65～0.95
Ni	≤0.35
Cu	≤0.25
V	0.10～0.20

Mechanical property：

strength of extensionσb (MPa)	≥1225(125)
offset yield strength σ0.2 (MPa)	≥1080(110)
Elongation δ5 (%)	≥9(for reference)
percentage reduction of area ψ (%)	≥20
Hardness	hot rolling,≤321HB
Cold drawing + Heat treatment	≤321HB

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