High Precision Flat Spring Wire High Quality High Hardness

Name: Cold - Drawn Spring Steel Wire65mn 60SI2MNA 55CRSI SAE9254V 50CRVA Manufacturer China - Customized Products - Friend Metal
Brand: Friend Metal
SKU: 10939613

Cold-drawn spring steel wire (carbon spring wire for important purposes) Use Suitable for the manufacture of high stress, the valve spring and other important uses without heat treatment or by the low temperature tempering spring

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Product Introduction

With advanced technology and customer-responsible service concepts, we have served many customers and accumulated rich production experience of Valve spring steel wire, 60si2mna shaped spring steel wire factory, Triangle spring steel wire for sale. We pay close attention to the needs of the market and pursue perfection. Our company has maintained friendly trade with many large and medium-sized enterprises at home and abroad for a long time, which has laid a solid foundation for the development of enterprises.

Cold-drawn spring steel wire (carbon spring wire for important purposes)
Use
Suitable for the manufacture of high stress, the valve spring and other important uses without heat treatment or by the low temperature tempering spring
Classification and diameter range of steel wires
Group E：0.08~6.00mm     Group F：0.08~6.00mm      Group G：1.00~6.00mm
Commonly used grades and chemical composition

Brand	Chemical composition，%
	C	Mn	Si	no greater than
	C	Mn	Si	P	S	Cr	Ni	Cu
65Mn	0.62~0.69	0.70~1.20	0.17~0.37	0.025	0.020	0.10	0.15	0.20
70	0.67~0.74	0.30~0.80	0.17~0.37	0.025	0.020	0.10	0.15	0.20
T9A	0.85~0.93	≤0.40	≤0.35	0.025	0.020	0.10	0.12	0.20
T8MnA	0.80~0.89	0.40~0.60	≤0.35	0.025	0.020	0.10	0.12	0.20

Surface Quality
The surface of the steel wire shall be smooth and shall not be cracked, folded, pricked, rusted or otherwise damaged, but individual small draw marks and lubricating coatings with depth not exceeding one half of the diameter tolerance shall be allowed; the depth of the group G pull marks shall not exceed 0.02mm; wire diameter of not more than 2mm, the pull marks to allow the depth of not more than 0.01mm. For the steel wire for the aerospace industry, diameter less than 3.5mm, the surface pull marks allowed depth of not more than 0.01mm, diameter greater than 3.5mm shall not exceed 0.02mm.
Decarburization layer
G group wire decarburization test, the decarburization depth of not more than 1.0% of wire diameter
Mechanical properties

Diameter，mm	tensile strength，MPa			Diameter，mm	tensile strength，MPa
Diameter，mm	Group E	Group F	Group G	Diameter，mm	Group E	Group F	Group G
0.90	2060~2390	2390~2690	-	2.80	1630~1910	1720~1980	1570~1810
1.00	2020~2350	2350~2650	1850~2110	3.00	1610~1890	1690~1950	1570~1810
1.20	1920~2270	2270~2570	1820~2080	3.20	1560~1840	1670~1930	1570~1810
1.40	1870~2200	2200~2500	1780~2040	3.50	1520~1750	1620~1840	1470~1710
1.60	1830~2140	2160~2480	1750~2010	4.00	1480~1710	1570~1790	1470~1710
1.80	1800~2130	2060~2360	1700~1960	4.50	1410~1640	1500~1720	1470~1710
2.00	1760~2090	1970~2230	1670~1910	5.00	1380~1610	1480~1700	1420~1660
2.20	1720~2000	1870~2130	1620~1860	5.50	1330~1560	1440~1660	1400~1640
2.50	1680~1960	1770~2030	1620~1860	6.00	1320~1550	1420~1660	1350~1590
Note: The tensile strength of the intermediate size wire shall be in accordance with the requirements of the adjacent larger size; the tensile strength of the intermediate size wire may also be carried out in accordance with the requirements of the adjacent smaller size。

Delivery Method
The wire is delivered as a coil

Cold-drawn spring steel wire (alloy spring wire)

Use
For the manufacture of high-stress mechanical spring steel wire and wear-resistant rod
Wire size and tolerances

Wire size	Allowable deviation	Wire size	Allowable deviation
1.00~3.00	±0.02	＞6.00~10.0	±0.035
＞3.00~6.00	±0.03	＞10.0~14.00	±0.040

The grade and chemical composition (%)

Brand	C	Si	Mn	Cr	V	no greater than
Brand	C	Si	Mn	Cr	V	P	S	Ni	Cu
50CrVA	0.46~0.54	0.17~0.37	0.50~0.80	0.80~1.10	0.10~0.20	0.030		0.35	0.25
55CrSiA	0.50~0.60	1.20~1.60	0.50~0.80	0.50~0.80	-	0.030		0.25	0.20
60Si2MnA	0.56~0.64	1.60~2.00	0.60~0.90	≤0.35	-	0.030		0.35	0.25

Mechanical properties

Diameter greater than 5.0mm its strength is not greater than 1030MPa, Brinell hardness can also be used instead, less than 5.0mm of the tensile strength of the wire
The two sides negotiate
Surface Quality

The surface of the steel wire shall be smooth and shall not have visible defects such as cracks, folds, delamination, staple and corrosion. It is permitted to have lubrication layer, heat treatment
Color and depth of not more than half of the individual tolerance of steel wire pull marks exist
Decarburization layer
The total depth of decarburized layer (ferrite + transition layer) of the steel wire shall conform to the requirements of Group I in the following table, and shall be indicated in the contract in the case of Group II delivery

Brand	Wire diameter
	≤ 6.0		＞6.0~10.0		＞10.0
	GroupⅠ	GroupⅡ	GroupⅠ	GroupⅡ	GroupⅠ	GroupⅡ
50CrVA	≤1.0%D	≤1.5%D	≤1.5%D	≤2.0%D	≤2.0%D	≤2.5%D
55CrSiA	≤1.5%D	≤2.0%D	≤2.0%D	≤2.0%D	≤2.5%D	≤2.5%D
60Si2MnA	≤1.5%D	≤2.0%D	≤2.0%D	≤2.0%D	≤2.5%D	≤2.5%D

delivery status
Cold-drawn state (WCD) Heat treatment: Annealed (TN) Normalized (TN)
Delivery Method
Steel wire to coil delivery

Carbon spring steel wire for important applications
CARBON SPRING STEEL WIRE FOR SIGNIFICANT USE
Suitable for the manufacture of high stress, the valve spring and other important uses without heat treatment or by the low temperature tempering spring
Classification and diameter range of steel wires
Group E：0.08~6.00mm
Group F：0.08~6.00mm
Group G：1.00~6.00mm

Commonly used grades and chemical composition

Brand	chemical composition，%
	C	Mn	Si	no greater than
	C	Mn	Si	P	S	Cr	Ni	Cu
65Mn	0.62~0.69	0.70~1.20	0.17~0.37	0.025	0.020	0.10	0.15	0.20
70	0.67~0.74	0.30~0.80	0.17~0.37	0.025	0.020	0.10	0.15	0.20
T9A	0.85~0.93	≤0.40	≤0.35	0.025	0.020	0.10	0.12	0.20
T8MnA	0.80~0.89	0.40~0.60	≤0.35	0.025	0.020	0.10	0.12	0.20

Torsion test requirements

Group distance：mm	Group E times not less than	Group F times not less than	Group G times not less than
≤2.00	25	18	20
＞2.00~3.00	20	13	18
＞3.00~4.00	16	10	15
＞4.00~5.00	12	6	10
＞5.00~6.00	8	4	6

Diameter：mm	tensile strength，MPa			Diameter：mm	tensile strength，MPa
Diameter：mm	Group E	Group F	Group G	Diameter：mm	Group E	Group F	Group G
0.08	2330~2710	2710~3060	-	0.70	2120~2250	2500~2850
0.09	2320~2700	2700~3050	-	0.80	2110~2490	2490~2840
0.10	2310~2690	2690~3040	-	0.90	2060~2390	2390~2690
0.12	2300~2680	2680~3030	-	1.00	2020~2350	2350~2650	1850~2110
0.14	2290~2670	2670~3020	-	1.20	1920~2270	2270~2570	1820~2080
0.16	2280~2660	2660~3010	-	1.40	1870~2200	2200~2500	1780~2040
0.18	2270~2650	2650~3000	-	1.60	1830~2140	2160~2480	1750~2010
0.20	2260~2640	2640~2990	-	1.80	1800~2130	2060~2360	1700~1960
0.22	2240~2620	2620~2970	-	2.00	1760~2090	1970~2230	1670~1910
0.25	2220~2600	2600~2950	-	2.20	1720~2000	1870~2130	1620~1860
0.28	2220~2600	2600~2950	-	2.50	1680~1960	1770~2030	1620~1860
0.30	2210~2600	2600~2950	-	2.80	1630~1910	1720~1980	1570~1810
0.32	2210~2590	2590~2940	-	3.00	1610~1890	1690~1950	1570~1810
0.35	2210~2590	2590~2940	-	3.20	1560~1840	1670~1930	1570~1810
0.40	2200~2580	2580~2930	-	3.50	1520~1750	1620~1840	1470~1710
0.45	2190~2570	2570~2920	-	4.00	1480~1710	1570~1790	1470~1710
0.50	2180~2560	2560~2910	-	4.50	1410~1640	1500~1720	1470~1710
0.55	2170~2550	2550~2900	-	5.00	1380~1610	1480~1700	1420~1660
0.60	2160~2540	2540~2890	-	5.50	1330~1560	1440~1660	1400~1640
0.63	2140~2520	2520~2870	-	6.00	1320~1550	1420~1660	1350~1590
Note: The tensile strength of the intermediate size wire shall be carried out in accordance with the requirements of the adjacent larger sizes. The tensile strength of the intermediate size wire may also be carried out in accordance with the requirements of the adjacent smaller size.

Winding test
Wire diameter less than 4mm, the diameter of the core rod is equal to the diameter of the wire; greater than or equal to 4mm of steel wire, the winding rod is twice the wire, winding five times after the wire shall not break and crack.
delivery status
The wire is delivered as a coil

Q Q：2382476093
Pho：13707659760
Tel：0373-3686581
Fax：0373-3686583
Con：Mr Wang
Email：hnfuruide@163.com
Web：http://www.hnfuruide.com/

Address: Xinxiang City, Henan Province, China Industrial Park by the southern section of six
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With wide experience and expertise, Friend Metal is engaged in the developing, manufacturing and marketing of cold - drawn spring steel wire65mn 60si2mna 55crsi sae9254v 50crva ASTM-A230-99, ASTM-A401, EN10270-2, JIS G3561. As a professional manufacturer, we now brings you high quality various steel wires made in China which comes in high strength, well toughness and excellent wearing resistance. We also welcome your customized orders.

With advanced equipment and superb craftsmanship, we focus on the development and production of High Precision Flat Spring Wire High Quality High Hardness, and strive to meet the different needs of users through continuous practice and innovation. We have constructed strong and long co-operation relationship with an enormous quantity of companies within this business overseas. In the process of enterprise development, we will always adhere to the core value of quality is everything dedicating to customers and society with high-quality products and services.

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