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18MnMoNbR steel plate melting composition / yield tensile / impact performance
Posted:2021-08-18 11:05:07
1. The material 18MnMoNbR is steel plate for boilers and pressure vessels, and the implementation standard is GB713.
2. 18MnMoNbR steel plate chemical composition:
3. 18MnMoNbR heat treatment method: normalizing and tempering.
4. 18MnMoNbR flaw detection standard NB/T47013.3
5. 18MnMoNbR steel plate mechanical properties:
6. 18MnMoNbR steel plate: "18" is 0.18% carbon content, "Mn" indicates the composition contains a certain chemical element - manganese, "Mo" indicates the composition contains a certain chemical element - molybdenum, "Nb" means niobium, and "R" is letter of the vessel plate, which represents its purpose.
2. 18MnMoNbR steel plate chemical composition:
C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Nb |
≤0.22 | 0.15-0.5 | 1.2-1.6 | ≤0.025 | ≤0.02 | ≤0.3 | ≤0.3 | 0.45-0.65 | ≤0.3 | 0.025-0.05 |
3. 18MnMoNbR heat treatment method: normalizing and tempering.
4. 18MnMoNbR flaw detection standard NB/T47013.3
5. 18MnMoNbR steel plate mechanical properties:
Thickness | Heat treatment |
Details |
||
30-60mm | Normalizing, tempering | ReL(MPa) | ≥440 | |
Rm(MPa) | 590~740 | |||
A5(%) | ≥17 | |||
Impact temperature | 0 | |||
Akv(J) | ≥31 | horizontal | ||
Bend diameter | 3a | |||
Bending angle | 180 | |||
Performance description | Heat treatment: normalizing + tempering | |||
60-100mm | ReL(MPa) | ≥410 | ||
Rm(MPa) | 570~720 | |||
A5(%) | ≥17 | |||
Impact temperature | 0 | |||
Akv(J) | ≥31 | horizontal | ||
Bend diameter | 3a | |||
Bending angle | 180 | |||
Performance description | Heat treatment: normalizing + tempering |
6. 18MnMoNbR steel plate: "18" is 0.18% carbon content, "Mn" indicates the composition contains a certain chemical element - manganese, "Mo" indicates the composition contains a certain chemical element - molybdenum, "Nb" means niobium, and "R" is letter of the vessel plate, which represents its purpose.
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