Blue Surface Hardened Spring Steel Strip
Blue Surface Hardened Spring Steel Strip
Model
SUP10

Item specifics

Width
10-320mm
Thickness
0.15-3.5mm
Delivery Condition
Soft Annealed,Hardened+Tempered
Surface Condition
Grey Blue,Bright,Polished,Polished and Colour Tempered

Product review

Description

Introduce
Hardened spring strips to meet the most exacting requirements depended upon for top quality coil.  This is perhaps the most universally used of all tempered spring steels. Recommended for various types of coiled and flat mechanical springs such as ignition vibrator springs, springs for timing devices, springs for the electrical and electronic field, steel tapes, rules, etc
Standard

Products Details

Supply Size Range:

Thickness: 0.5-8mm

Width:80-300mm

Length: Coils


Delivery Conditions:

*Cold Rolled only

*Cold Rolled+Soft Annealed (G)

*Cold Rolled+Soft Annealed+Cold Rolled (G+K)

*Cold Rolled+Hardened+Tempered (H+A)


Surface Conditions:

*Grey Blue (GR)

*Bright (BK)

*Polished (P)

*Polished and Colour Tempered (P+AF)

All Grades Comparison

GB

ASTM

JIS

EN

DIN

55

1055

/

CK55

1.1204

60

1060

/

CK60

1.1211

70

1070

/

CK67

1.1231

75

1075

/

CK75

1.1248

85

1086

SUP3

CK85

1.1269

T10A

1095

SK4

CK101

1.1274

65Mn

1066

/

/

/

60Si2Mn

9260

SUP6,SUP7

61SiCr7

60SiCr7

50CrVA

6150

SUP10A

51CrV4

1.8159

Chemical Composition(%)

Steel Grade

C

Mn

Si

P

S

Cr

Ni

Cu

V

55

0.52-0.60

0.50-0.80

0.17-0.37

0.035 max

0.035 max

0.25 max

0.30 max

0.25 max

/

65

0.62-0.70

0.50-0.80

0.17-0.37

0.035 max

0.035 max

0.25 max

0.25 max

0.25 max

/

70

0.62-0.75

0.50-0.80

0.17-0.37

0.035 max

0.035 max

0.25 max

0.25 max

0.25 max

/

75

0.72-0.80

0.50-0.80

0.17-0.37

0.035 max

0.035 max

0.25 max

0.30 max

0.25 max

/

85

0.95-1.04

0.40 max

0.35 max

0.025 max

0.025 max

/

/

/

/

65Mn

0.62-0.70

0.90-1.20

0.17-0.37

0.035 max

0.035 max

0.25 max

0.25 max

0.25 max

/

60Si2Mn

0.56-0.64

0.70-1.00

1.50-2.00

0.035 max

0.035 max

0.35 max

0.25 max

0.25 max

/

50CrVA

0.46-0.54

0.50-0.80

0.17-0.37

0.025 max

0.025 max

0.80-1.10

0.35 max

0.25 max

0.10-0.20

Mechanical Properties(Quenched and Tempered Condition)(T=20°C if not differently stated)

Steel Grade

Tensile Strength Rm (Mpa)

Yield Strength Rp0.2 (Mpa)

Elongation A5 (%)

Area Reduction Ratio C (%)

65

980 min

785 min

9 min

35 min

70

1030 min

835 min

8 min

30 min

85

1130 min

980 min

6 min

30 min

65Mn

980 min

785 min

8 min

30 min

60Si2Mn

1275 min

1180 min

5 min

25 min

50CrVA

1275 min

1130 min

10 min

40 min

Heat Treatment

Steel Grade

Quenching Temperature (°C)

Media

Tempering Temperature (°C)

65

840

oil

500

70

830

oil

480

85

820

oil

480

65Mn

830

oil

540

60Si2Mn

870

oil

480

50CrVA

850

oil

500