|Grade:||C75S 1.1248||Feature:||High Carbon|
|Shape:||Steel Strip||Surface Condition:||1 Grey/blue Oxide Finish:unpolished;2 Bright Tempered:unpolished; 3 Polished: 4 Polished And Coloured:blue Or Yellow Colour|
|Steel Grade:||C75S||Steel Number:||1.1248|
|Form:||Steel Coils Strips||Standard:||EN BS 10132-4 C75S 1.1248|
1.1248 High Carbon Spring Steel Strip,
C75S High Carbon Spring Steel Strip,
QT Coil Rolled Steel
BS EN 10132-4 C75S 1.1248 High Carbon Spring Steel Strip
Grade : C75S Number: 1.1248
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.
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
C75S 1.1248 High Carbon Spring Steel Strip Chemical composition
|name||number||C||Si||Mn||P max.||S max.||Cr||Mo max.||Ni|
|C75S||1.1248||0,70 to 0,80||0,15 to 0,35||0,60 to 0,90||0,025||0,025||max. 0,40||0,10||max. 0,40|
C75S 1.1248 High Carbon Spring Steel Strip Mechanical properties
|Steel designation||delivery condition|
|annealed (+A) or annealed and skin passed (+LC)||cold rolled (+CR)||quenched and tempered (+QT)|
|name||number||Proof strength max. Mpa||Tensile strength max. Mpa||Elongation % min.||HV max.||Tensile strength max. Mpa||HV max.||Tensile strength Mpa||HV|
|C75S||1.1248||510||640||15||200||1170||320||1 200 to 1 900||370 to 580|
C75S 1.1248 High Carbon Spring Steel Strip Mandatory information
a) the quantity to be delivered;
b) the designation of the product form (cold rolled narrow strip);
c) the number of the dimensional standard (EN 10140);
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.
C75S 1.1248 High Carbon Spring Steel Strip Delivery condition
Cold rolled narrow steel strip covered by EN10132-4 shall be supplied in one of the following delivery conditions:
-annealed or annealed and skin passed(+A or +LC);
-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.
C75S 1.1248 High Carbon 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
C75S 1.1248 High Carbon 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.
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.
75 steel - C75S - 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.
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.
High carbon steel is an ideal material for custom flat springs, custom clips, and custom sheet metal stampings. High Carbon Steel Strips combines ease of fabrication with good strength and surface finish, is valued for its strength properties and operates at significantly higher levels than the mild steel grades. High carbon steel strip can be finished to meet the needs of a wide range of products. Where tensile strength and hardness are required, High Carbon steels are the material of choice. High Carbon Steel Strips Grades : C60, C65, C70, C75, C85, HC-14, En 42 J, C-98, C-100, C-124, HC21 etc. We offer spring steel strip in various shapes and sizes according to your final uses. These have excellent hardens property and high yield strength. Clients can avail these at competitive prices.
C75S 1.1248 High Carbon Spring Steel Strip Inspection and testing
verification of the dimensions
visual examination of the surface quality
Extent of testing
Tensile and bending tests
Tolerances on shape
Contact Person: Sales Manager