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Cold Heading Quality Steel Wire： |
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Steel |
Chemical Compositions |
Chemical Compositions |
C |
Si |
Mn |
P |
S |
Al |
Cr |
Mo |
B |
SWRCH6A |
≤0.08 |
≤0.10 |
≤0.60 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH8A |
≤0.10 |
≤0.10 |
≤0.60 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH10A |
0.08~0.13 |
≤0.10 |
0.30~0.60 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH15A |
0.13~0.18 |
≤0.10 |
0.30~0.60 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH18A |
0.15~0.20 |
≤0.10 |
0.60~0.90 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH20A |
0.18~0.23 |
≤0.10 |
0.30~0.60 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH22A |
0.18~0.23 |
≤0.10 |
0.70~1.00 |
≤0.030 |
≤0.035 |
≥0.02 |
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SWRCH35K |
0.32~0.38 |
0.10~0.35 |
0.60~0.90 |
≤0.030 |
≤0.035 |
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SWRCH45K |
0.42~0.48 |
0.10~0.35 |
0.60~0.90 |
≤0.030 |
≤0.035 |
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ML35 |
0.32~0.39 |
≤0.20 |
0.30~0.60 |
≤0.035 |
≤0.035 |
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ML08AL |
0.05~0.10 |
≤0.10 |
0.30~0.60 |
≤0.035 |
≤0.035 |
≥0.02 |
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SCM435 |
0.33~0.38 |
0.15~0.35 |
0.60~0.85 |
≤0.030 |
≤0.030 |
|
0.90~1.20 |
0.15~0.30 |
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SCM440 |
0.38~0.43 |
0.15~0.35 |
0.60~0.85 |
≤0.030 |
≤0.030 |
|
0.90~1.20 |
0.15~0.30 |
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ML40Cr |
0.38~0.45 |
≤0.30 |
0.60~0.90 |
≤0.035 |
≤0.035 |
|
0.90~1.20 |
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ML35CrMo |
0.32~0.40 |
≤0.30 |
0.60~0.90 |
≤0.035 |
≤0.035 |
|
0.80~1.10 |
0.15~0.25 |
|
10B21 |
0.18~0.23 |
≤0.10 |
0.70~1.00 |
≤0.030 |
≤0.035 |
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≥0.0005 |
10B33 |
0.32~0.36 |
0.15~0.35 |
0.70~1.00 |
≤0.030 |
≤0.035 |
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≥0.0005 |
ML20MnTiB |
0.19~0.24 |
≤0.30 |
1.30~1.60 |
≤0.035 |
≤0.035 |
≥0.02 |
Ti：
0.04~0.10 |
|
0.0005~0.0035 |
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Decarburization Standard： |
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Size |
Carbon Steel |
Alloy Steel |
DMF |
DMT |
DMF |
DMT |
≤∮15mm |
≤0.02 |
≤0.15 |
≤0.02 |
≤0.15 |
＞∮15~∮25mm |
≤0.03 |
≤0.20 |
≤0.03 |
≤0.20 |
＞∮25~∮32mm |
≤0.04 |
≤0.25 |
≤0.04 |
≤0.25 |
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Annealing Steel Wire Quality Standard： |
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Mechanical Property
(Material) |
Tensile Strength Kgf/mm |
Elongation % |
Reduction of Area % |
Hardness HRB |
Spheroidized % |
Cold Upsetting |
SWCH6A |
31~42 |
≥10 |
— |
— |
≥80 |
1/3passed |
SWCH10A |
33~44 |
≥10 |
— |
— |
≥80 |
1/3passed |
SWCH15A |
36~46 |
≥10 |
— |
— |
≥80 |
1/3passed |
SWCH18A |
42~52 |
≥10 |
— |
— |
≥80 |
1/3passed |
SWCH22A |
42~52 |
≥10 |
— |
— |
≥80 |
1/3passed |
10B21 |
43~52 |
≥10 |
≥65 |
≤81 |
≥80 |
1/3passed |
10B33 |
46~56 |
≥10 |
≥60 |
≤86 |
≥80 |
1/3passed |
SCM435 |
51~59 |
≥10 |
≥60 |
≤89 |
≥80 |
1/3passed |
SCM440 |
52~60 |
≥10 |
≥60 |
≤90 |
≥80 |
1/3passed |
SWCH35K |
47~56 |
≥10 |
≥60 |
≤86 |
≥80 |
1/3passed |
SWCH38K |
49~57 |
≥10 |
≥60 |
≤86 |
≥80 |
1/3passed |
SWCH45K |
51~58 |
≥10 |
≥60 |
≤88 |
≥80 |
1/3passed |
ML40Cr |
51~61 |
≥10 |
≥60 |
≤91 |
≥80 |
1/3passed |
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Steel Wire Packing Method： |
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Process |
Size mm |
weight per coil kg |
Inner Diameter mm |
Winding Direction |
Graphic Representation |
SAF |
2.00-5.80 |
500below |
390-470 |
1 |
 1-Clockwise
 2-Counter Clockwise
|
5.81-14.00 |
1000below |
900-1150 |
1/2 |
14.01-32.00 |
1000below |
900-1150 |
1 |
SAIP |
2.00-5.80 |
500below |
450-500 |
1 |
5.81-12.00 |
1000below |
800-950 |
1/2 |
12.01-16.00 |
1000below |
800-1000 |
1/2 |
16.01-32.00 |
1000-2000 |
1000-1200 |
1 |
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