Introduction of 14Cr1MoR alloy structural steel
14Cr1MoR is an alloy structural steel. Cr and Mo are the abbreviations of the chemical elements chromium and molybdenum, and R is the first letter of the container plate "Rong" pinyin. This product is suitable for the manufacture of medium-temperature pressure vessels with a temperature of no more than 500 degrees, and the 14Cr1MoR steel plate is suitable for petrochemical, nuclear power, steam turbine blocks, thermal power and other high-temperature and high-pressure equipment, and large-scale equipment
that is connected with hydrogen or hydrogen mixed media. At present, the domestic production of this type of steel is Wuyang Steel Mill.
| Chemical composition |
| Tabulation: Depu Steel Date: 2024-01-22 |
| C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
| ≤0.09 |
≤0.50 |
0.7~1.50 |
≤0.015 |
≤0.005 |
≤0.52 |
≤0.25 |
≤0.60 |
Note:
(1): In order to improve the properties of steel, other trace alloying elements other than those in the above table can be added; This value is only for WSD690D≤80mm; The data comes from the network and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate shall comply with the provisions of GB/T222 (3): Ceq (%) = C + Mn/6 + Si / 24 + Ni / 40 + Cr / 15 + Mo / 4 + V / 14, and the allowable deviation of
Ceq for finished product analysis shall not exceed 0.02%;
(4) :P cm(%)=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B Finished product analysis Pcm allowable deviation does not exceed 0.02%
Thickness/mm Transverse tensile test Transverse impact test Transverse bending yield strength MPa Tensile strength MPa Elongation A % Temperature/ Impact absorption energy KV2/J 5% strain aging impact energy Aks/J 180° bending
d=3a
≤80 ≥690 770-930 ≥15 -20 average ≥ 100 individual ≥ 70 -20 average ≥ 47 individual ≥ 34 intact
> 80-120 ≥670 750-920
Note: The results of Charpy V impact (including aging impact) test results are calculated according to the arithmetic average of 3 samples, and the value of one of the samples is allowed to be lower than the specified value in the above table, but not less than 70% of the specified value.
