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nickled steel plate
·introduction
·characteristic
·application
·material classification
·nickled plated introduction
·salt spray test1
·salt spray test2
·salt spray test3
·production flow chart
·available size
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  introduction  
 

the marriage between world class surface treatment and rolling technology has created "ni-top" with excellent appearance and superior performance.
"ni-top" has been developed using our superior rolling and innovative surface treatment technol-ogies. its excellent formability, dimensional accuracy and corrosion resistance has been highly acclaimed worldwide.
as quality demands increase and product applicat-ions expand, we are confident you will be pleased with our "ni-top".

   
  characteristic  
 

1.applications
ni-top is produced in a variety of grades and specifi-cations to meet your automobive, battery and electronics applications.

2.surperior surface treatment
available in extra bright using finely polished rolls and matte using uniformly dull finished rolls.

3.nickel plating
ni-top is offered in various plating thicknesses, types and differential coatings.

4.excellent corrosion resistance and exfoliation properties
ni-top's excellent corrosion properties are due to carefully controlled heat treatment after nickel plating to generate the desired fe-ni alloy layer.

5.environmentally-friendly material
ni-top comply with a standard of rohs.

   
  applications  
 
1.battery cans
2.stationery accessaries
3.auto parts
4.mcb
   
  specifications  
material classification

class

temper grade

temper code

remarks

hardness

hv

hr-30t

hrb

spcc

anneal

a

as annealed

<105

<53

<57


tandard grade

sb

anti-orange peel for drawing use

<115

>58

<65

sa

sd

se

1/4 hard

su4

manufactured by continous annealing process

115 ~ 150

58 ~ 68

65 ~ 80

su5

1/2 hard

2

manufactured by continous annealing process

135 ~ 185

64 ~ 74

74 ~ 89

2c

full hard

1

full hard

>170

>71

>85

spcd

stamping

sd

for deep drawing use

<115

<58

<65

full hard (wt%)

class

c

mn

p

s

fe

spcc

<0.12

<0.50

<0.040

<0.045

balance

spcd

<0.10

<0.45

<0.035

<0.035

balance

spce(equivalency)

<0.08

<0.40

<0.030

<0.030

balance

surface finish

distinction of surface finish

symbol

remarks

dull finish

d

dull in appearance; a finish by rolling on rolls roughened

bright finish

b

luster in appearance; a finish by rolling on rolls polished

   
  nickled plated introduction  
types of ni-top

kind

distinction of ni layer

structure

feature

applications

k treatment nt

hear treatment after ni-plating

soft ni layer

fe-ni diffusion layer

steel

luster surface by bright finish
good coating adhesion
good corrosion resistance
good spot-weldability

battery:cans, caps, lead parts
automotive:fuel line, exhaust pipe, muffler
crt:magnetic inner shield
others:electronic and appliance parts

bright nt

as bright ni-plated

plating layer

steel

luster surface

battery:cans
stationary:binder

dull nt

as dull ni-plated

plating layer

steel

luster surface by bright finish
low electric contact resistance

battery:cans

stainless steel nt

as semi bright ni-plated

plating layer

stainless steel

(sus304,430)

uster surface
low electric contact resistance
corrosion resistance

battery:cans(lithium coin battery)

structure of ni plated layer
k treatment
as ni plated
ni layer model
soft ni layer
fe-ni diffusion layer
steel
ni layer
steel
depth profile of ni, fe by gds analysis
examples of ni-plated thickness

equivalent plated thickness

differencial plated thickness

symbol

thickness ( μm)

weight ( g/m2)

symbol

thickness ( μm)

weight ( g/m2)

0.25/0.25

0.25/0.25

2.23/2.23

0.5/0.5

0.5/0.5

4.45/4.45

0.5/0.5 ~ 10

0.5/0.5 ~ 10

4.45/4.45 ~ 89

1.0/1.0

1.0/1.0

8.9/8.9

1.0/0.5 ~ 10

1.0/0.5 ~ 10

8.9/4.45 ~ 89

2.0/2.0

2.0/2.0

17.8/17.8

2.0/0.5 ~ 10

2.0/0.5 ~ 10

17.8/4.45 ~ 89

3.0/3.0

3.0/3.0

26.7/26.7

3.0/0.5 ~ 10

3.0/0.5 ~ 10

26.7/4.45 ~ 89

4.0/4.0

4.0/4.0

35.6/35.6

4.0/0.5 ~ 10

4.0/0.5 ~ 10

35.6/4.45 ~ 89

5.0/5.0

5.0/5.0

44.5/44.5

5.0/0.5 ~ 10

5.0/0.5 ~ 10

44.5/4.45 ~ 89

6.0/6.0

6.0/6.0

53.4/53.4

6.0/0.5 ~ 10

6.0/0.5 ~ 10

53.4/4.45 ~ 89

10/10

10/10

89/89

10/0.5 ~ 10

10/0.5 ~ 10

89/4.45 ~ 89

   
  salt spray test1  
6.corrosion resistance test
①comparison of corrosion resistance on erichsen test piece
type
k treatment
as plated
immersion test in 5%
cu2(so4) solution
temperature:35 ℃
time:10 sec
erichsen value:7 mm
thickness of steel 0.25mm, ni plated thickness 3μm
②comparison of conventional ni coating and k treatment
el
0%
10%
20%
25%
as plated
k treatment
  ni platedlayer 3μm
jis z 2371
5% salt solution 35 ℃ 2 hours
stretched by tesile test(jis no.5)
 
   
  salt spray test2  
1.characteristics test example of contact electric resistance:
4-point probe method of a.c, condition weight=100g, contact point diameter=1.0mmΦ
resistance(mΩ) initial final value
dull plating 2.9 6.2
semi-bright plating 2.5 7.3
bright plating 3.1 49.0
k treatment 2.9 8.9
aging condition:60℃ x 95%rh x 2 weeks
2.magnetic property for material of crt magnetic shield

 

k treatment(soft material)

dull plated(hard material)

tempera-ture

max magnetic 
induction(bm)

residual induction(br)

coercive force(hc)

max permeability
(μm)

max magnetic induction
(bm)

residual induction
(br)

coercive force(hc)

max permeability
(μm)

-

14.9kg

11.9kg

99.5a/m

4300

12.4kg

8.3kg

207a/m

1600

450

15.1kg

11.5kg

99.5a/m

4500

13.3kg

9.0kg

183a/m

1900

590

15.0kg

12.4kg

99.5a/m

4800

14.6kg

12.3kg

138a/m

3200

spot weldability

←→200μm

   
  salt spray test3  
3.welding test ←→200µm
charged voltage
as nickel plated
k treatment
240v bitmap bitmap
290v bitmap bitmap
320v bitmap bitmap
340v bitmap bitmap
4.surface hardness tess
5.relation between charged voltage and tensile shear
   
manufacturing process
   
available size
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