The wire rod for steel-wire and steel wrings line  
   
 
International Grade
National
Standard No
Grade
Chemical Composition
45
CHINA
GB/T4354
1994
45
C0.42~0.50,Si0.17~0.37,Mn0.50~0.80,P≤0.035,
S≤0.035,Ni≤0.25,Cr≤0.25,Cu≤0.25
U.S.A
ASTMA29M
1993a
1045
C0.43~0.50,Si0.15~0.35,Mn0.60~0.90,P≤0.040,
S≤0.050
JAPAN
JIS G4051
1979
S45C
C0.42~0.48,Si0.15~0.35,Mn0.60~0.90,P≤0.030,
S≤0.035,Ni≤0.20,Cr≤0.20,Cu≤0.30,Ni+Cr≤0.035
S48C
C0.45~0.51,Si0.15~0.35,Mn0.60~0.90,P≤0.030,
S≤0.035,Ni≤0.20,Cr≤0.20,Cu≤0.30,Ni+Cr≤0.035
50
CHINA
GB/T4354
1994
50
C0.47~0.55,Si0.17~0.37,Mn0.50~0.80,P≤0.035,
S≤0.035,Cr≤0.25,Ni≤0.25,Cu≤0.25
U.S.A
ASTM A29M
1993a
1050
C0.48~0.55,Si0.15~0.35,Mn0.60~0.90,
P≤0.040,S≤0.050
JAPAN
JIS G4051
1979
S50C
C0.47~0.53,Si0.15~0.35,Mn0.60~0.90,P≤0.030,
S≤0.035,Cr≤0.20,Ni≤0.20,Ni+Cr≤0.35,Cu≤0.30
S53C
C0.50~0.56,Si0.15~0.35,Mn0.60~0.90,P≤0.030,
S≤0.035,Cr≤0.20,Ni≤0.20,Ni+Cr≤0.35,Cu≤0.30

 

Intemational Grade

National

Standard.No
Grade
Chemical Composition
55
CHINA
GB/4354
1994
55
C0.52~0.60,Si0.17~0.37,Mn0.50~0.80,P≤0.035
S≤0.035,Cr≤0.25,Ni≤0.25,Cu≤0.25
U.S.A
ASTM A29M
1993a
1055

C0.50~0.60,Si0.15~0.35,MN0.60~0.90,
P≤0.040,S≤0.050

JAPAN
JIS G4051
1979
S55C
C0.52~0.58,Si0.15~0.35,Mn0.60~0.90,P≤0.030,
S≤0.035,Cr≤0.20,Ni≤0.20,Ni+Cr≤0.35,Cu≤0.30
S58C
C0.55~0.61,Si0.15~0.35,Mn0.60~0.90,P≤0.030,
S≤0.035,Cr≤0.20,Ni≤0.20,Ni+Cr≤0.35,Cu≤0.30
60
CHINA
GB/T4354
1994
60
C0.57~0.65,Si0.17~0.37,Mn0.50~0.80,P≤0.035,
S≤0.035,Cr≤0.25,Ni≤0.25,Cu≤0.25
U.S.A
ASTM A29M
1993a
1060

C0.55~0.65,Si0.15~0.35,Mn0.6~0.90,
P≤0.040,S≤0.050

JAPAN
JIS G4051
1979
S58C
C0.55~0.61,Si0.15~0.35,Mn0.60~0.90,P≤0.030
S≤0.035,Cr≤0.20,Ni≤0.20,Ni+Cr≤0.35,Cu≤0.30