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Home> WOS Recommends > Posco for High Carbon Steel > Production Specifications
PRODUCTION SPECIFICATIONS :-
A) Chemical Composition :-
| Specifications |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
| SK65 |
0.60~0.70 |
|
|
|
|
|
|
|
| SK75 |
0.70~0.80 |
|
|
|
|
|
|
|
| SK85 |
0.80~0.90 |
|
|
|
|
|
|
|
| SK95 |
0.90~1.00 |
0.10~0.35 |
0.10~0.50 |
|
|
- |
- |
- |
| SK105 |
1.00~1.10 |
|
|
|
|
|
|
|
| SK120 |
1.15~1.25 |
|
|
0.030Max |
0.030Max |
1.30~2.00 |
- |
- |
| SKS51 |
0.75~0.85 |
|
|
|
|
0.40~0.70 |
0.40~0.60 |
0.15~0.25 |
| SNCM220 |
0.17~0.23 |
0.15~0.35 |
0.60~0.90 |
|
|
|
|
|
| SCM415 |
0.13~0.18 |
|
|
|
|
|
|
|
| SCM430 |
0.28~0.33 |
0.15~0.35 |
0.60~0.90 |
|
|
0.25Max |
0.90~1.20 |
0.15~0.30 |
| SCM435 |
0.33~0.38 |
|
|
|
|
|
|
|
| SCM440 |
0.38~0.43 |
|
|
|
|
|
|
|
| SMn420 |
0.17~0.23 |
0.15~0.35 |
1.20~1.50 |
|
|
0.25Max |
0.35Max |
- |
| S45C |
0.42~0.48 |
0.15~0.35 |
0.60~0.90 |
|
|
- |
- |
- |
| S50C |
0.47~0.53 |
0.15~0.35 |
0.60~0.90 |
|
|
- |
- |
- |
| S55C |
0.52~0.58 |
|
|
|
|
- |
- |
- |
| SAE1536 |
0.30~0.38 |
- |
1.20~1.55 |
0.030Max |
0.030Max |
- |
- |
- |
| SAE1541 |
0.36~0.45 |
- |
1.30~1.65 |
|
|
- |
- |
- |
| SAE1080 |
0.74~0.88 |
0.15~0.40 |
0.60~0.90 |
|
|
- |
- |
- |
| DN-50CrV4 |
0.47~0.55 |
0.25~0.50 |
0.70~1.10 |
|
|
- |
0.90~1.20 |
V:0.1~0.2 |
| DN-75Cr1 |
0.70~0.80 |
0.25~0.50 |
0.60~0.80 |
|
|
- |
0.30~0.40 |
- |
| AUTOBEAM |
0.30Max |
- |
0.50Max |
0.30Max |
0.005Max |
- |
0.10~0.30 |
B:10~30ppm |
- The specifications listed above are currently produced by POSCO. Please refer to the dimensions available by TS grade for your final selection.
- Refer the dimensions on the next page when ordering products in specifications not listed above.
B) Carbon Steel Specifications (Compatibility with specifications according to carbon and alloy content):-
| Types |
JIS |
SAE |
DN |
POSCO |
Steel for machine structural use |
High-carbon Steel |
S30C, S35C, S40C,
S45C, S50C, S55C |
1030,1035, 1040, 1045, 1050, 1055 |
C30, C45, C50, C55 |
POS20FB
POS45FB |
| Alloy Steel |
Ni-Cr-Mo |
SNCM220 |
8620, 8622 |
20NiCrMo2, 20NiCrMoS2 |
- |
| Cr |
SCr415, 420, 430 |
5046 |
34Cr4, 34CrS4 |
- |
| Cr-Mo |
SCM415, 420, 430, 435, 440 |
4120, 4130, 4135, 4140 |
34CrMo4, 34CrMoS4 |
- |
| Mn |
SMn443 |
1536, 1541, 1552 |
34CrMo4, 34CrMoS4 |
- |
| B |
In-house standardized |
- |
- |
AUTOBEAM |
| Others |
SUP9 |
- |
50CrV4 |
- |
Tool-steel |
High-carbon Steel |
S60C, S65C, S70C, S75C, SK65, SK75, SK85, SK95, SK105, SK120 |
1060, 1065, 1070, 1075, 1080, 1085, 1090, 1095 |
C80W1 |
- |
| Alloy Steel |
SKS51 |
- |
- |
- |
- |
- |
75Cr1 |
- |
*Eight grades, from S10C to S28C, are not included in the "steel for machine structural use" category, while the grades between SAE1060 and SAE1095 are included in the "tool-steel" category.
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