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12Cr2Mo1R(H) steel plate chemical composition
The smelting method of 12Cr2Mo1R(H) hydrogen steel plate: adopt electric furnace + LF/VD vacuum furnace refining method.
12Cr2Mo1R(H) steel plate chemical composition, chemical element melting analysis, the finished product analysis is as follows:
| Composition | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Sb | Sn | As | [H] | O | N |
| Melting analysis | ≤0.15 | ≤0.10 | 0.30-0.6 | ≤0.010 | ≤0.010 | 2.00-2.5 | 0.90-1.1 | ≤0.20 | ≤0.20 | ≤0.003 | ≤0.015 | ≤0.016 | ≤0.0002 | ≤0.003 | ≤0.008 |
| Finished product analysis | ≤0.17 | ≤0.10 | 0.27-0.63 | ≤0.010 | ≤0.010 | 1.95-2.6 | 0.87-1.13 | ≤0.20 | ≤0.20 | ≤0.003 | ≤0.015 | ≤0.016 | ≤0.0002 | ≤0.002 | ≤0.008 |
Note: Temper embrittlement sensitivity coefficient should meet the following requirements: J=(Si+Mn)(P+Sn)×104≤100
(P+Sn) ≤0.014 Substitute the elements in the above formula with their percentage content.
The grain size and non-metallic inclusions of 12Cr2Mo1R(H) steel plate are as follows:
The grain size is not coarser than grade 5; the steel plate is not a metal inclusion sulfide type (A type), alumina type (B type), silicate type (C type) and spherical oxide type (D type), single Particle spherical type (DS type) shall not be greater than grade 1.5, and shall satisfy A+C≤2.0, B+D+DS≤2.0, and the total number≤4.0.