Q550D High Strength Steel Plate
Q550D low alloy steel material: Q stands for yield and is also the abbreviation of applied Chinese characters; 550 stands for the yield point value unit is 550Mpa. If the steel plate withstands a force greater than 550, the material will be deformed and damaged; D stands for steel plate level, and D level is for Passed -20 degree low temperature impact test.
Q550D hsla steel plate is a low-alloy high-strength plate. The default is a modulated delivery state. It is mainly used in important (low temperature) high-strength structural parts, cranes, large steel structure projects, marine equipment, pressure components, engineering machinery, and mining steel structure parts. The uses are relatively wide.
Q550D Hsla Steel Chemical Composition:
| STEEL GRADE | C% max | Si% max | Mn% max | P% max | S% max | Cu% max | Cr% max | Ni% max | Mo % max | B % max | V % max | Nb% max | Ti % max |
| Q550D | 0.2 | 0.80 | 1.7 | 0.02 | 0.010 | 0.5 | 1.5 | 2 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 |
Q550D Low Alloy Steel Mechanical Property:
| STEEL GRADE | Re yield strength Mpa min | Re yield strength Mpa min | elongation % | Energy and temperature | |||||||
| Min | 0 | -20 | -40 | -60 | |||||||
| Q550D | t≤50 | 50-100 | 100-150 | t≤50 | 50-100 | 100-150 | - | J | J | J | J |
| 550 | 530 | 490 | 640-820 | 640-820 | 590-770 | 16 | 47 | 47 | 34 | 34 | |
structural alloy steel plate
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