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Ck75 Steel C75s C75 SAE 1075 spring steel strip Supplier, Manufacturer and Exporter

Ck75 Steel C75s C75 SAE 1075 spring steel strip

Short Description:

CK75 steel is equivalent to grade C75 C75s  SAE 1075 ,which is a high-carbon steel material, with C indicating a carbon content of 0.75%. Other main alloying elements include manganese, silicon, phosphorus, etc.

 

CK75 steel  is a high-carbon steel material, with C indicating a carbon content of 0.75%. Other main alloying elements include manganese, silicon, phosphorus, etc.

The CK75 Steel has the following properties and applications:

Characteristic of CK75 Steel:

It has high yield strength and tensile strength and can withstand large tensile loads.

It has good mechanical properties and heat treatment properties, and is suitable for manufacturing springs that require high strength and wear resistance.

Its hardness can be adjusted through heat treatment to meet the needs of different application scenarios.

It has a certain magnetic permeability and can be used to manufacture electromagnetic components.

It has good corrosion resistance and can maintain good surface finish and weather resistance under certain conditions.

Application of CK75 Steel:

Automotive industry: used to manufacture automobile chassis springs and suspension system parts.

Machinery manufacturing: used to manufacture various mechanical springs, mechanical parts and tools.

Electronic and electrical fields: used to manufacture electromagnetic components and conductive springs.

Construction and furniture: used to manufacture door and window hardware accessories and furniture springs, etc.

Suitable for making very large springs, such as stacked leaf springs on bulldozers, large coil springs and large torsion springs on ships.

CK75 Steel are equivalent to AISI 1075 carbon steel include:

ASTM A29 (1075)

ASTM A510 (1075)

ASTM A713 (1075)

SAE J403 (1075)

SAE J412 (1075)

EN10132 Standard SAE1075 cold rolled carbon steel strip CK75 C75 C75S Spring steel strip has a carbon content of 0.7-0.8% making it a multi-purpose carbon steel with good spring properties.

Therefore, it is a commonly used carbon steel in a wide range of engineering applications.

SAE1075 or CK75 contains 0.7-0.8% carbon, 0.15-0.35% silicon, 0.6-0.9% manganese, and 0.03% phosphorus and sulphur. It has a tensile strength of 1230-1340 MPa, yield strength of 1130-1240 MPa, and a hardness of 57-63 HRC.

CK75 spring steel has better hardenability, the critical hardenable diameter in oil can reach 100~150mm.

CK75 or C75 is Suitable for making very large springs, such as stacked leaf springs on bulldozers, large coil springs and large torsion springs on ships.

CK75 spring steel is a high-carbon steel material. Its chemical composition mainly includes carbon (C) content between 0.70-0.80%, silicon (Si) content between 0.10-0.35%, and manganese (Mn) content between 0.60-0.80%.

Between 0.90%, the contents of phosphorus (P) and sulfur (S) are less than 0.025% respectively.

CK75 spring steel has good elasticity and toughness and is often used to manufacture springs, blades, saw blades, knives and other parts and tools that require high strength and wear resistance.

C75 C75s CK75 SAE 1075 spring steel strip

 

1,Delivery Conditions:

Delivery condition

Size

Surface

Edge

Cold Rolled

Thickness:0.09-8mm

Bright/Polished

Slit

Cold Rolled+ Hydrogen Annealed

Width: 6- 450mm

Bright/Polished

Round

Cold Rolled+ Hardened+ Tempered

Coil ID:300-800mm

Bright/Polished

Square

 

 

2. Grades comparison:

GRADES COMPARISON FOR SPRING STEEL

CHINA GB/T

USA ASTM

JAPAN JIS

GERMANY DIN

FRANCE NF

BIRTAIN BS

ISO

KOREA KS

TIWAN CNS

45

1045

S45C

CK45

XC45

 

C45

-

-

50

1050

S50C

CK50

XC50

080M50

C50

-

-

60

1060

S60C

CK60

XC60

060A62

C60

-

-

70

1070

S70C

CK70

XC70

 

C70

-

-

75

1075

S75C

CK75

XC75

 

C75

-

-

T10

W1-9

SK4

-

-

-

-

-

-

T9

W1-8

SK5

-

-

-

-

-

-

SK85

-

SK85

-

-

-

-

-

-

40MN

1043

SWRH42B

40MN4

40M5

080A40

SL,SM

-

-

42MN

-

-

-

-

-

-

-

-

65MN

1566

S60C-CSP

CK67

-

080A67

C60E4

-

-

55 SI2MN

9255

SUP6/SUP7

55SI7

55SI7

251H60

55SICR7

-

-

60 SI2MN

9260

SUP6/SUP7

65SI7

65SI7

251H60

61SICR7

SUP3

SUP6

62 SI2MN

-

-

-

-

-

-

-

-

75CR1

-

75CR1

75CR1

75CR1

-

-

-

-

51CRV4

5160

SUP9A

51CRV4

57CRV4

-

-

SPS5A

SUP9A

30CRMO

G41300

SUP13

35CRMO4

-

-

-

SPS9

SUP9A

50CRVA

6150

SUP10

51CRV4

51CRV4

735A51

51CRV4

SPS6

SUP10

3,Chemical Composition:


 

CHEMICAL COMPOSITION%):

STANDARD

GRADE

 

C

Si

Mn

P

S

Cr

Ni

Cu

V

GB/T699

45

0.42~0.50

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

50

0.47~0.55

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

55

0.52~0.60

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

60

0.57~0.65

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

65

0.62~0.70

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

70

0.67~0.75

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

75

0.72~0.80

0.17~0.37

0.50~0.80

0.035

0.035

0.25

0.3

0.25

-

GB/T699

MN40

0.37~0.44

0.17~0.37

0.70~1.00

0.035

0.035

0.25

0.3

0.25

-

GB/T699

MN45

0.42~0.50

0.17~0.37

0.70~1.00

0.035

0.035

0.25

0.3

0.25

-

GB/T699

MN65

0.62~0.70

0.17~0.37

0.90~1.20

0.035

0.035

0.25

0.3

0.25

-

GB/T1298

SK5

0.80~0.90

<0.35

<0.50

0.03

0.03

0.2

0.25

0.3

-

GB/T1298

SK4

0.95~1.04

<0.35

<0.40

0.035

0.03

0.25

0.2

0.3

-

GB/T3077

51CRV4

0.47~0.55

0.17~0.37

0.80~1.10

0.035

0.035

0.90~1.12

0.3

0.3

0.10~

0.20

GB/T3077

50CRVA

0.47~0.54

0.17~0.37

0.50~0.80

0.025

0.025

0.80~1.10

0.3

0.3

0.10~

0.20

GB/T3077

75CR1

0.7~0.8

0.25~0.5

0.50~0.70

0.035

0.035

0.30~0.40

-

-

-

GB/T1222

55SI2MN

0.52~0.60

1.50~2.00

0.60~0.90

<0.35

<0.35

<0.35

<0.35

<0.25

-

GB/T1222

60SI2MN

0.56`0.64

1.50~2.00

0.60~0.90

<0.35

<0.35

<0.35

<0.35

<0.25

-

 

 2025-08-12T12:42:13

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