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C67S spring steel
Strong Strength, High-Quality Products

C67S spring steel description

Spring steels are steels that are used exclusively for the manufacture of springs and elastic elements due to their elasticity in the hardened and tempered state.
The elasticity of steel depends on its ability to deform elastically, i.e., within a specified range, the ability to deform elastically so that it can withstand a certain load without permanent deformation after the load is removed.
Spring steel should have excellent overall performance, such as mechanical properties, resistance to elasticity reduction performance (that is, resistance to elasticity reduction performance, also known as resistance to relaxation performance), fatigue performance, hardenability, physical and chemical properties (heat resistance, low temperature resistance, oxidation resistance, corrosion resistance, etc.).
In order to meet the above performance requirements, spring steel has excellent metallurgical quality (high purity and uniformity), good surface quality , accurate shape and size.


C67S spring steel Applications

1、 Applications include piano wire (also known as music wire) such as ASTM A228 (0.80–0.95% carbon), spring clamps, antennas, springs (e. g. vehicle coil springs or leaf springs), and s-tines. 2、Spring steel is commonly used in the manufacture of swords with rounded edges for training or stage combat, as well as sharpened swords for collectors and live combat. 3、 Spring steel is one of the most popular materials used in the fabrication of lockpicks due to its pliability and resilience. 4、Tubular spring steel is used in the landing gear of some small aircraft due to its ability to absorb the impact of landing. 5、 It is frequently used in the making of knives, machetes, and other edged tools. 6、 It is used in electrical fish tapes. 7、 It is used in binder clips. 8、 Used extensively in shims due to its resistance to deformation in low thicknesses.

C67S spring steel Composition

Steel grade

C [%]

Si [%]

Mn [%]

P [%] max.

S [%] max.

Cr [%] max. / –

Mo [%]

Ni [%] max.

V [%]

C55S

0.52 – 0.60

0.15 – 0.35

0.60 – 0.90

0.025

0.010

0.40

0.10

0.40

C60S

0.57 – 0.65

0.15 – 0.35

0.60 – 0.90

0.025

0.010

0.40

0.10

0.40

C67S

0.65 – 0.73

0.15 – 0.35

0.60 – 0.90

0.025

0.010

0.40

0.10

0.40

Spring steel Mechanical Property

Category

EN 47 Spring Steel

Density: 

7.85 g/cm3

Thermal Expansion: 

11.2 x 10-6/°C

Thermal Conductivity:

 43 W/m.K

Electrical Resistivity:

 0.142 x 10-6 Ω.m

Elastic Modulus: 

190-210 GPA

Poisson’s Ratio: 

0.27-0.30

Hardness: 

30-35 HRC (Annealed condition)

Tensile Strength: 

785-935 MPa

Yield Strength: 

550-690 MPa

Elongation: 

12-15%


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Application

Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.

Oil and GasKuwait is a country of petroleum resources with abundant, oil factory also is very broad, respectively, the oil plant are mainly used for refining oil and oil processing.
MarineSubmarine pipelines carry such things as domestic water, waste water, electrical lines, gas lines, communication lines, and outfall or intake systems.
ConstructionBridge materials with high strength, low cost for selecting the main basis, give priority to with development of the traditional steel and concrete.
EnergyEngineering is mainly aiming at the water pollution and solid waste pollution. using the steel pipe to filtrate in order to improve the quality of water.

Export area

We are a well known worldwide supply and export Spring steel plate in following countries:,Italy, Philippines, France,Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.