used mattress spring tempered spring steel wire Grade:55CrSi,60Si2Mn,65Mn Dia:6.0~16.0mm Standards: ASTM, BS, DIN, GB, JIS

used mattress spring tempered spring steel wire

Grade:55CrSi,60Si2Mn,65Mn Dia:6.0~16.0mmStandards: ASTM, BS, DIN, GB, JIS

Advantage:

1. Marerial: we select good quality spring steel wire rod.

2. Surface treatment: advanced technology of shot blasting, 100% rubbed smooth, almost can do zero defects for the surface.

3. Quality assurance: Eddy current test online

4.Service life: Ultra fine martensitic structure which could improve the fatigue life of spring

5. Applicable Industriesl: Widely used in automobile, elevator, motorcycle, electric switches, high-speed rail, machinery. Meanwhile, we also can according to the customer’s requests to produce many kinds of strength level for spring steel wire.

 

Mechanical property of steel wire in static level and Moderate fatigue level

Diameter /mm	Tensile strength /MPa					Reduction of areaa/%≥
	FDC TDC	FDCrV-A TDCrV-A	FDCrV-B TDCrV-B	FDSiMn TDSiMn	FDCrSi TDCrSi
						FD	TD
>5.00~5.60	1470~1620	1460~1610	1540~1690	1660~1810	1800~1950	35	40
>5.60~6.00	1460~1610	1440~1590	1520~1670	1650~1800	1780~1930	35	40
>6.00~6.50	1440~1590	1420~1570	1510~1660	1640~1790	1760~1910	35	40
>6.50~7.00	1430~1580	1400~1550	1500~1650	1630~1780	1740~1890	35	40

 

used mattress spring tempered spring steel wire