55 steel wire
Chemical Compositions
|
Grade
|
(C)%
|
(Si)%
|
(Mn)%
|
(P)%
|
(S)%
|
(Cr)%
|
(Ni) %
|
(Cu) %
|
|
55
|
0.52-0.60
|
0.17-0.37
|
0.50-0.80
|
≤0.035
|
≤0.035
|
≤0.25
|
≤0.30
|
≤0.25
|
|
55A
|
0.52-0.60
|
0.17-0.37
|
0.50-0.80
|
≤0.030
|
≤0.030
|
≤0.25
|
≤0.30
|
≤0.25
|
|
55E
|
0.52-0.60
|
0.17-0.37
|
0.50-0.80
|
≤0.025
|
≤0.020
|
≤0.25
|
≤0.30
|
≤0.25
|
physical properties
|
Grade
|
wire diameter
mm
|
tensile strength
σb /MPa (≥)
|
Elongation
δ5 / % (≥)
|
reduction of area
ψ/ % (≥)
|
hardness
|
|
55
|
>0.20- ≤0.75
|
1180
|
13
|
35
|
HBS10/3000
No heat treatment≤255
Annealing ≤217
|
|
>0.75- ≤1.0
|
1080
|
||||
|
>1.0- ≤3.0
|
980
|
||||
|
>3.0- ≤6.0
|
880
|
||||
|
>6.0- ≤10.0
|
785
|
grade Comparison
|
China
GB YB
|
American
ASTM
|
Japan
JIS
|
Germany
DIN EN
|
UK
BS EN
|
French
NF EN
|
Russian
rOCT
|
|
55
|
1055
|
S55C
|
C55(1.0535)
|
-
|
||
55 high-quality carbon steel , high strength carbon steel, treated with high surface hardness and strength, but the ductility, toughness, cutting performance medium, welding, quenching, poor water quenching with tendency to form cracks. After normalizing or quenching generally used for high strength and wear resistance required or flexible, dynamic load and shock load of little parts.
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[Source：Original]
[Author：web]
[Date：09-01-13]
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