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A. Cr-Mo Indefinite Chilled Nodular Iron Roll
A1. Low Ni-Cr-Mo Indefinite Chilled Nodular Iron Roll
A2. Middle Ni-Cr-Mo Indefinite Chilled Nodular Iron Roll
Description:
1) Size: According to clients' drawing
2) Hardness: According to clients' demand
3) Chemical Composition: According to Clients'demand.
Characters: These rolls are characterized by spherical graphite. Its mechanical properties are similar to that of alloy indefinite chilled rolls except that its strength is higher than the latter.
Application: Wire rod, structural steel and narrow-band strip mill.
Chemical composition:
|
No. |
C |
Si |
Mn |
Cr |
Mo |
Ni |
P |
S |
Others |
Mg |
|
A |
2.9-3.8 |
0.8-2.5 |
0.4-1.2 |
0.2-0.6 |
0.2-0.6 |
0.5-1.0 |
≤0.25 |
<0.03 |
trace |
≥0.04 |
|
A1 |
2.9-3.8 |
0.8-2.5 |
0.4-1.2 |
0.2-0.6 |
0.2-0.6 |
1.01-2.5 |
≤0.25 |
<0.03 |
trace |
≥0.04 |
|
A2 |
2.9-3.8 |
0.8-2.5 |
0.4-1.2 |
1.2-1.3 |
0.2-0.8 |
1.2-2.5 |
≤0.2 |
<0.03 |
trace |
≥0.04 |
Physical properties:
|
No. |
Hardness of Body (HSD) |
Hardness of Size (HSD) |
Tensile Strength (MPa) |
|
A |
58-70 |
32-48 |
≥300 |
|
A1 |
60-70 |
32-52 |
≥320 |
|
A2 |
62-75 |
35-52 |
≥350 |
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