S70C Bright Annealed Spring Steel Strip

JIS G4802 S70C-CSP Annealed Spring Steel Strip

Grade : S70C-CSP Classification: Structural steel Standards: JIS G 4802 : Cold-rolled steel strip for springs

Dimensions and tolerances
Thickness: 0.1 to 5 mm; Tolerances: +/- 0.008 to 0.11 mm
Width: 10 to 400 mm; Tolerances: +/- 0.15 to 0.60
*accept nonstandard size, please contact with our sales.

Our Advantage
1. Precise thickness, uniform hardness. Bright surface, smooth edge.
2. High flatness of board surface, high performance after multiple bending.
3. No cracking after stamping, and the quality is stable. And we provide Self-Inspection Reports and Raw-Material Test Certificates.
4. Professional anti-rust protective packaging. On time delivery, competitive price.
5. Large stock available, no MOQ requirement

S70C-CSP Annealed Spring Steel Strip Chemical composition

S70C-CSP Annealed Spring Steel Strip Mechanical properties

S70C-CSP Annealed Spring Steel Strip Delivery condition

Cold rolled narrow steel strip covered by JIS G4802 shall be supplied in one of the following delivery conditions:

-annealed or annealed and skin passed(+A or +LC);

-cold rolled(+CR);

-quenched and tempered(+QT).

NOTE The delivery condition-annealed to achieve spheroidized carbides(+AC)-may be agreed. In such cases, limits on spheroidization and mechanical properties may also be agreed at the time of enquiry and order.

S70C-CSP Annealed Spring Steel Strip Surface finish

The surface finish of cold rolled narrow steel strip shall be bright as produced by rolling and annealing in a controlled atmosphere.

The surface finishes of quenched and tempered cold rolled strip are as follows:

1 grey/blue oxide finish:unpolished;

2 brigth tempered:unpolished

3 polished: obtained by fine grinding, abrasive brushing or other processes;

4 polished and coloured:blue or yellow colour obtained by oxidization by heat treatment.

S70C-CSP Annealed Spring Steel Strip Mandatory information

The following information shall be supplied by the purchaser at the time of enquiry and order to enable the supplier to comply with the requirements of this European Standard:

a) the quantity to be delivered;

b) the designation of the product form (cold rolled narrow strip);

c) the number of the dimensional standard

d) the dimensions and tolerances on dimensions and shape and, if applicable, letters

denoting relevant special tolerances;

e)the number of this European Standard including the number of the relevant part;

f) steel name or steel number

g) the delivery condition

h) if required, the type of inspection document in accordance with EN 10204.

S70C-CSP Annealed Spring Steel Strip Decarburization

For silicon alloyed steels, decarburization shall not exceed 3% of the material thickness per side,for non silicon alloyed steels, decarburization shall not exceed 2% of the material thickness per side when measure data distance of 5mm from the stripe edge

We hold expertise in providing a qualitative range of Blue Tempered Steel Strips to our clients at affordable prices. Owing to features like high efficiency, optimum performance and durable finish standards they are highly demanded in the market. Our ranges of these are used in various industries like automobile, cable and electronic industries.

In annealed and lightly rolled materials, they exhibit a large degree of elongation, and can withstand complex processing. Springs are used in plenty of applications in the present-day world. Even so, only a few people have a nodding acquaintance with the brass tracks of spring manufacturing and the different qualities needed for various functions. While coiling steel into a spiral of desired length and diameter is the primary and center-most stage of spring fabrication, other treatments during and after the procedure determine the quality of the product that reaches the consumer.

Equivalent Materials
DIN 1.1231DIN Ck67DIN C67SAFNOR C68RRAFNOR XC68AFNOR C67SBS C67SBS 70CSBS 70HSUNI C70AISI 1070SAE 1070JIS S70CMJIS S70C-CSPJIS SWRH72BEN C67SEN 1.1231ISO CS65GOST 65GGOST 65GAGOST 65GB 65GB U20652GB/T 65GB/T U20652ASTM 1070ASTM Grade 1070MUNS G10700IS C70DIN 1.0603DIN C67AFNOR C68EN 1.0603ISO CS70GOST 70

As a constructional steel, it is used for medium-weight machine parts such as bolts and bucket links, rolls, molding boards, agricultural machinery parts, press plates and ball mills, press rods, and briquette presses. Non-weldable steel, resistant to temper embrittlement, prone to decarburization and oxidation during heat treatment.

Spring steel strip is used to build springs for a great variety of purposes. Below especially the cold rolled (carbon as well as stainless) spring steel strip will be described in detail. The most common production width of spring steel strip is about 300 mm (11.811 inches). As a matter of course spring steel strip can be slit or cut to length (sheets). We supply a very wide range of high carbon and alloys, covering the most stringent industrial requirements. We have also developed a unique know-how in the design of custom solutions for special applications.

S70C-CSP - Carbon spring steel with low hardening capacity for lightweight springs for oil hardening. It is characterized by resistance to abrasion and high strength. Used for low-loaded springs and springs, spring parts, clock springs, saws for cutting stones in the form of tapes and sheets.

S70C-CSP Annealed Spring Steel Strip Inspection and testing

verification of the dimensions

visual examination of the surface quality

Chemical analysis

Extent of testing

Tensile and bending tests

Tolerances on shape