C75s High Carbon Spring Steel Flat Steel Bar

The pursue from the firm, would be the clients' gratification for Valve cold spring steel wire EN10270-2, Mechanical alloy steel wire, Oval spring steel wire factory. Our company aims to exceed customer expectations. People-orientated and high quality are the core values of our company, to which we have always adhered and as our belief in continuous progress. We always adhere to one step at a time, focus on the details of each product, and do a good job of every service. 'Customer's requirements are our pursuit' is our basic business tenet.

Characteristics and scope of application:

Is widely used in Si Mn spring steel, strength, elasticity and hardenability, slightly higher than 55Si2Mn. Suitable for railway vehicles, automobile and tractor industry production bear a larger load or a flat spring wire diameter in the spiral spring, below 30mm is suitable for the production of temperature at 250 DEG C nonrefractory spring corrosion medium and under alternating load and in large type under high stress the importance of working roll spring.

Chemical composition:

C:0.56 to 0.64

Si:1.60 to 2

Mn:0.60 to 0.90

S: = 0.030

P: = 0.030

Cr: = 0.35

Ni: = 0.35

Cu: = 0.25

Mechanical properties:

The ultimate tensile strength of B (MPa): 1568 (160)

Yield strength s (MPa): 1372 (140)

10 elongation (%): 5

Section shrinkage (%): 20 PSI

The hardness is less than or equal to 321HB;: hot rolling, cold drawing + heat treatment, less than 321HB

Specification and metallographic structure of heat treatment:

Specification for heat treatment: quenching at 870 + 20 C, oil cooling; tempering at 440 C + 50 C (special needs, + 30).

We have further increased the manufacturing and sales of various new products, ensuring that our C75s High Carbon Spring Steel Flat Steel Bar is at an advanced level in the industry, and achieving the strategic goal of sustainable development. Welcome your visiting! With the latest production equipment, as well as senior engineers and professional technical teams, our production workshop has reached international standards and established strict process standards.