07MnNiMoDR 07MnNiMoDR cryogenic vessel plate implements the standard GB19189. 07MnNiMoDR steel is delivered in a quenched and tempered state, the yield strength is greater than 490Mpa, the tensile strength is between 610-730Mpa, the longitudinal impact temperature is -50 degrees.
07MnNiMoDR cryogenic vessel plate chemical composition:
| C | Si | Mn | P | S | Ni |
| ≤0.09 | 0.15-0.4 | 1.2-1.6 | ≤0.015 | ≤0.005 | 0.3-0.6 |
| Cr | Mo | Cu | V | B | Pcm Max |
| ≤0.3 | 0.1-0.3 | ≤0.25 | ≤0.06 | ≤0.002 | ≤0.21 |
Mechanical properties of 07MnNiMoDR cryogenic vessel plate:
| Delivery Status | Thickness | Mechanical properties | ||
| Quenching + tempering (Q+T) | 10-50mm | ReL(MPa) | ≥490 | When the yield is not obvious, use Rp0.2 |
| Rm(MPa) | 610-730 | |||
| A(%) | ≥17 | |||
| Impact temperature (℃) | -50 | |||
| Akv(J) | ≥80 | |||
| Bending diameter | 3a | |||
| Bending angle | 180 | |||
07MnNiMoDR cryogenic vessel plate ultrasonic inspection:
The 07MnNiMoDR steel plate shall be ultrasonically tested for each sheet, and the testing method shall be carried out according to JB/T4730.3 or GB/T2970, and the qualification level shall be grade 1.
07MnNiMoDR steel is a low welding crack susceptibility steel, which belongs to the steel plate for low temperature pressure vessels. 07MnNiMoDR cryogenic vessel plate is mainly used in large oil storage tanks, large spherical tanks and oil production platforms.
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