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Trademark B-A Chemical composition(%,max)

C 0.003 Si 0.01 Mn 0.20 P 0.012 S 0.006 Al 0.15-0.50 Cr 0.02 Ni 0.01 Cu 0.02

Trademark B-B:

C 0.003 Si 0.01 Mn 0.13 P 0.012 S 0.006 Cr 0.02 Ni 0.02 Al 0.04 Cu 0.02

Type(mm):

Medium plate and steel billet(8-250),plate coil(12-25),straight round steel(dia6.5-dia300),round steel coil,cold drawn plate coil(0.5-2.5) etc.

We can produce the special type which you ask

application :

a.make it in electric core,heel piece,gag bit in electric appliance device,telecommunication

b.Electric core of electric iron

c.Electromagnetic part of instruments and meters

d.Iron core and shell of direct-current dynamo

e.Electric part or magnetic part for car,tractor,lathe

f.Magnetic shielding apparatus

Charateristic

(1).good electromagnet character.Coercive force(Hc)low,high magnetic permeability,high saturation induction density (Bs),stable magnet and no magnetic aging

(2) high pure,electric pure iron,is full killed steel,refine,so the density is high,average,good,little gas,C(ELEMENT) not more than 0.004%,this is a reliable condition that customer simplify and cut down the anneal process of the parts.

(3) cold drawn,hot roll,forge.Cold process,these is no problem such as lathe,drill,punch,bend,drawn.Hot process,such as forge,roll,there is little redsear sensibility,it is a good condition for doing in a large degree scope.

International standard

trademark        coercive force Hc A/m(oe)

not more than coercive force aging Hc A/m(oe)

not more than Max.magnetic conductivity H/m(Gs/Oe)* not less than         magnetic strength T(Gs) not less than

B-A   48.0(0.6)  4.8(0.06)  11.3

(9000)       B200         B300         B500         B1000       B2500       B5000       B10000

                                     1.20

(12000)    1.30

(13000)    1.40

(14000)    1.50

(15000)　         1.62

(16200)    1.71

(17100)    　1.80

(18000)

magnetic aging:keep 100 degree for 100 hours or Condition is 790 degree after 2 hours, after cooling with the furnace.