General Purpose     Spring      Cold Heading   Free-Cutting    REED WIRE      Scrubbing          Ni-Co      


   What is Stainless steel

    Stainless steel is ferric which contains more than 12% of chromium to keep from stain and rust.
   
  And it is an alloy steel of complex which consists of carbon, nickel, silicon, and molybdenum according to its own necessity.

   Kinds of Stainless steel

       Austenite stainless steel   ~ This is an alloy steel of Ferrum-Nickel.
                                                   Major one is 18Cr-8Ni which is non-magnetic at normal and high temperature.

        
Ferrite stainless steel      
~ This is an alloy steel of Ferrum and Chromium same as martensitic type.
                                                  
It dosen't make 'R' type in high temperature because it contains 18% Chromium.

   
    Martensite stainless steel ~ This is an alloy steel of Ferrum and Chromium containing 13% Chromium.
                                        
           Various mechanical properties can be obtained with proper heat treatment.

   Characteristics of Stainless steel

      As our stainless steel products are remarkably different from those of regular carbon steel, these are being used for various applications like
     
ordinary springs, cold heading, reed, scrubbers, spring washers, and springs for precision components.
    

     
General characteristics of stainless steel
    
        Fine surface with bright finish.      Various  methods for surface treatment.      Anti-rust.
           Abrasion resistant.                      Superior breaking strength.                        Strong against fire and high temperature.

 Chemical composition of stainless steel

  1. Chemical composition of austenite stainless steel (KS D 3702/JIS G 4308)

C

Si

Mn

P

S

Cr

Ni

Mo

Cu

304

0.08

1.00 

2.00 

0.045

0.030 

18.00 ~

8.00 ~

-

-

and below

and below

and below

and below

and below

20.00 

10.50 

304L

0.030 

1.00 

2.00 

0.045

0.030 

18.00 ~

9.00 ~

-

-

and below

and below

and below

and below

and below

20.00 

13.00 

316

0.08

1.00 

2.00 

0.045

0.030 

16.00 ~

10.00 ~

2.00 ~

-

and below

and below

and below

and below

and below

18.00 

14.00 

3.00 ~

316L

0.030 

1.00 

2.00 

0.045

0.030 

16.00 ~

12.00 ~

2.00 ~

-

and below

and below

and below

and below

and below

18.00 

15.00 

3.00 ~

XM7

0.08

1.00 

2.00 

0.045

0.030 

17.00 ~

8.50 ~

-

3.00 ~

and below

and below

and below

and below

and below

19.00 

10.50 

4.00 ~

303

0.15

1.00 

2.00 

0.20 

0.15

17.00 ~

8.00 ~

-

-

and below

and below

and below

and below

and below

19.00 

10.00 

                                                              Remark    For 303, it is possible to add up 0.60% or less of Mo.

   2. Chemical composition of austenite stainless steel (KS/JIS)

C

Si

Mn

P

S

Cr

Ni

Mo

Cu

N

304M

0.05

1.00 

2.00 

0.045

0.030 

18.00 ~

9.00 ~

-

-

-

and below

and below

and below

and below

and below

20.00 

10.00 

304HC

0.060 

1.00 

2.00 

0.035

0.030 

18.00 ~

8.00 ~

-

1.00 ~

-

and below

and below

and below

and below

and below

20.00 

10.50 

3.00 

202M

0.05 ~

1.00 

9.00 ~

0.040 

0.030 

17.50 ~

5.00 ~

-

-

0.250 ~

0.15

and below

12.00 

and below

and below

20.00 

7.00 

0.350 

  3. Chemical composition of ferrite stainless steel (KS D 3702/JIS G 4308)

C

Si

Mn

P

S

Cr

Ni

Mo

Cu 

430

0.12 and below

0.75 and below

1.00 and below

0.040 and below

0.030 and below

16.00~18.00

-

-

-

  4. Chemical composition of martensite stainless steel (KS D 3702/JIS G 4308)

C

Si

Mn

P

S

Cr

Ni

Mo

Cu

420F

0.26~0.40

1.00 and below

1.25 and below

0.060 and below

Above 0.15

12.00~14.00

-

-

-

    

 The Property of Our company Product

  1. Stainless steel wire for general purpose (KS D 3703/JIS G 4309)

     : Mild Quality No1(W1,1/8H), Mild Quality No2(W2,/4H), 1/2 Hard Quality(1/2H)

 304H,304M,316

Diameter

Mild Quality No1 (1/8H)

Mild Quality No2 (1/4H)

Hard Quality (1/2H)

Weigth

()

(kg/2)

()

(kg/2)

()

(kg/2)

()

     (kg)

0.60~0.79

55 ~ 90

270 ~ 290

-

-

-

-

25

0.80~1.19

80 ~ 115

250 ~ 280

115 ~ 150

250 ~ 280

1.20~1.60

350 ~ 380

350 ~ 380

50

1.61~1.99

50 ~ 85

410 ~ 430

75 ~ 110

110 ~ 145

2.00~2.99

500 ~ 600

500 ~ 600

100

3.00~4.49

610 ~630

4.50~5.00

100 ~ 200

5.01~5.49

50 ~ 80

75 ~ 105

105 ~ 135

5.50~8.00

680 ~ 700

Diameter tolerace and ovality (barometer : mm)

Diameter Dia.Tolerance() Ovality()
JIS Our company JIS Our company
Over 0.32 - 0.70  0.010 0.008 0.010 And Below 0.008 And Below
Over 0.07 - 1.00  0.015 0.010 0.015 And Below 0.010 And Below
Over 1.00 - 1.60  0.020 0.015 0.02 And Below 0.015 And Below
Over 1.60 - 2.80  0.030 0.025 0.03 And Below 0.025 And Below
Over 2.80 - 5.00  0.040 0.030 0.04 And Below 0.030 And Below
Over 5.00 - 9.00  0.050 0.040 0.05 And Below 0.040 And Below

Elongation (For W1 only)

Diameter() Elongation (%)
JIS Our company
0.30 - 0.50  Over 20 Over 25
Over 0.50 - 9.00  Over 30 Over 35

   

   2. Stainless steel wire for spring (KDS D 3535/JIS G 4314) : WPA type(3/4H), WPB type(FH)

 

304H, 304M

,316

Diameter

Standard  

T/S(kg/2)

Inner 

 Dia. (mm)

Weight 

per Coil(kg)

()

WPA

       WPB

Bright

Dull

Bright

Dull

0.20 

165 ~ 190

220 ~ 245

100 ~ 110

100 ~ 110

1

3 ~ 5

0.21 ~ 0.24

160 ~ 185

210 ~ 235

0.25 ~ 0.29

160 ~ 170

5 ~ 10

0.30 ~ 0.34

160 ~ 170

180 ~ 200

2

15 ~ 20

0.35 ~ 0.39

3

0.40 

180 ~ 200

5

20

0.41 ~ 0.49

200 ~ 225

0.50 ~ 0.59

210 ~ 230

10

25 ~ 30

0.60 ~ 0.70

210 ~ 230

25

30

0.71 ~ 0.79

150 ~ 175

190 ~ 215

0.80 ~ 1.00

250 ~ 280

250 ~ 280

50

1.01 ~ 1.14

140 ~ 165

180 ~ 205

1.15 ~ 1.19

350 ~ 380

60

1.20 ~ 1.40

350 ~ 380

50

1.41 ~ 1.59

135 ~ 160

170 ~ 195

80

1.60 ~ 1.79

100

1.80 ~ 1.99

500 ~ 530

2.00 

500 ~ 600

500 ~ 600

100

2.01 ~ 2.60

130 ~ 155

160 ~ 185

2.61 ~ 4.00

120 ~ 145

150 ~ 175

4.01 ~ 4.49

110 ~ 135

140 ~ 165

4.50 ~ 6.00

100 ~ 200

100 ~ 200

6.01 ~ 7.20

100 ~ 125

130 ~ 155

 Remark   For the WPA type, the bright finished products are available on or above 0.26mm and the dull finished ones on or above 0.23mm.

Diameter tolerace and ovality (barometer : mm)

Diameter Dia.Tolerance() Ovality()
JIS Our company JIS Our company
Over 0.18 - 0.45  0.010 0.008  0.010 And Below  0.008 And Below
Over 0.45 - 1.80  0.015 0.010  0.015 And Below  0.010 And Below
Over 1.80 - 3.20  0.020 0.015  0.020 And Below  0.015 And Below
Over 3.20 - 7.00  0.030 0.025  0.030 And Below  0.025 And Below
Over 7.00 - 9.00  0.050 0.040  0.050 And Below  0.040 And Below

  3. Stainless wire for cold heading (KDS D 3697/JIS G 4315) : WSA(CHA), WSB(CHB)

 XM-7, 304HC

Dia.(mm)

WSA(XM-7)

WSB(XM-7)

WSB(304HC)

T/S

Weight

Coil Inner

T/S

Weight

Coil Inner

T/S

Weight

Coil Inner

(kg/2)

(kg)

Dia.()

(kg/2)

(kg)

Dia.()

(kg/2)

(kg)

Dia.()

1.50 ~ 1.60

50 ~ 65

50

270 ~ 290

55 ~ 75

50

350 ~ 380

65 ~80

-

-

1.61 ~ 1.99

45 ~ 60

410 ~ 430

47 ~ 65

57 ~ 72

-

-

2.00 ~ 2.19

100

540 ~ 560

-

-

2.20 ~ 2.99

80 ~ 100

-

-

3.00 ~ 3.99

610 ~ 630

-

-

4.00 ~ 4.49

100

500 ~ 600

4.50 ~ 5.30

100 ~200

100 ~ 200

100 ~ 200

5.31 ~ 5.49

580 ~ 600

5.50 ~ 8.00

680 ~ 700

8.01 ~ 9.25

Diameter tolerace and ovality (barometer : mm)

Diameter Dia.Tolerance() Ovality()
JIS Our company JIS(Below) Our company
Over 0.08 - 3.50  0 - 0.025 0 - 0.020 0.013  0.010 
Over 3.50 - 5.50  0 - 0.035 0 - 0.020 0.018  0.015 
Over 5.50 - 9.00  0 - 0.05 0 - 0.040 0.025  0.020 
Over 9.00 - 0 - 0.06 0 - 0.050 0.030  0.025 

 4. Stainless wire for Free-Cutting : A(1/8H), B(1/4H)

             202M,303,402F

Dia.(mm)

         A type(1/

8H)

            B type(1/

4H)

Weight (kg)

T/S(kg/2)

Coil Inner Dia.()

T/S(kg/2)

 Coil Inner Dia.()

2.00 ~ 2.99

55 ~84

410 ~ 430

75 ~ 98

500 ~ 600

100

3.00 ~ 4.49

610 ~ 630

4.50 ~ 5.40

100 ~ 200

 5. Stainless wire for Reed 

Type : 430

U s e

  Diameter()

T/S(kg/2)

Tolerance()

Ovality()

0.70 ~ 1.29

100 ~ 115

0.005

0.005 And Below

1.30 ~ 2.20

0.010

REED

2.21 ~ 2.50

95 ~ 110

2.51 ~ 2.80

90 ~ 105

2.81 ~ 3.00

85 ~100

REED FRAME

3.30 ~ 3.99

75 ~ 95

0.030

0.020 And Below

4.00 ~ 4.09

65 ~ 85

4.10 ~ 4.99

60 ~ 80

5.00 ~ 5.30

50 ~ 70

 6. Stainless wire for scrubber

Type : 430

Diameter ()

T/S(kg/2)

Tolerance()

Ovality()

0.80

50 ~ 70

- 0.010

0.010 And Below

- 0.030

  7. Nickl Coated Stainless Steel Wire : WPA(3/4H), WPB(FH)

Type : 304H

Dia. (mm)

T/S(kg/2)

Coil Inner Dia.()

Weight (kg)

WPA

   WPB

Bright

Dull

Bright

Dull

0.20 

165 ~ 190

220 ~ 245

1

3 ~ 5

100 ~ 110

100 ~ 110

0.21 ~ 0.24

160 ~ 185

210 ~ 235

0.25 ~ 0.29

5 ~ 10

160 ~ 170

0.30 ~ 0.34

2

15 ~ 20

160 ~ 170

180 ~ 200

0.35 ~ 0.39

3

0.40 

5

20

180 ~ 200

0.41 ~ 0.49

200 ~ 225

0.50 ~ 0.59

10

25 ~ 30

210 ~ 230

0.60 ~ 0.70

25

30

210 ~ 230

0.71 ~ 0.79

150 ~ 175

190 ~ 215

0.80 ~ 1.00

50

250 ~ 280

250 ~ 280

Remark   Ovality, jump-up, and other specifications of ni-co stainless steel wire are same as the standard of general stainless steel spring wire.

Diameter tolerace and ovality (barometer : mm)

Diameter Tolerance() Ovality()
JIS Our company JIS Our company
0.181 - 0.45 0.010 0.008 0.010 0.008
0.451 - 1.80 0.015 0.010 0.015 0.010
1.801 - 3.20 0.020 0.015 0.020 0.015
3.201 - 7.00 0.030 0.025 0.030 0.025
7.001 - 9.00 0.050 0.040 0.050 0.040

Jump-up

Diameter () Max ()
- 0.50 40
0.51 - 4.00 30
4.01 -  20

  Character of Our company Ni-Co Stainless Steel Wire

   Different from general stainless spring wires, Ni-Co spring wires are being packed by automatic coiling machine at high speed
     
 
which can secure spring quality uniform.

 
  After spring forming work, temper color is not changeable during tempering treatment.

  
Easily welded and proper for electric & electronic purpose.