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Q550D High Strength Steel
Low Alloy Steel Product Description
Q550D hsla steel sheet is a grade steel with a yield strength of 550mpa. Q550D high strength low alloy is a higher strength low alloy steel and a high strength steel plate with low welding crack sensitivity.
The grade of Q550D high strength low alloy hsla steel consists of three parts: Chinese pinyin letters representing yield strength, yield strength value, and quality grade symbol.
Q550D high strength steel Among them: Q - the letter starting with the Chinese pinyin of the word "qu" of the steel's yield strength; 550 - the yield strength value, in MPa; D - the quality grade is D (grades are divided into C, D, E).
Q550D high tensile steel itself not only has high strength, but also has certain toughness, fatigue resistance, impact resistance, corrosion resistance, low temperature impact resistance, and comprehensive high-quality steel plate properties such as welding and easy processing. Q550D high strength low alloy structural steel has been highly praised and recognized by the manufacturing industry because of its multiple high-quality properties.
High Strength Plate Product Details
Chemical Composition Of Q550D High Strength Steel Sheet(HSLA):
| 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 |
Mechanical Properties Of Q550D High Strength Low Alloy Plate:
| Teel 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 | |
High Tensile Steel Plate Product Picture

Gnee Group Introduction And Customer Visits
Based on corporate strategic layout and global market demand, GNEE has established a long-term and stable cooperative relationship with the steel industry, cooperating with Europe, Sweden, Russia, Germany, the United States, Japan, India and other countries.
All our products are supplied according to American ASTM/AISI, German DIN, Japanese JIS, Chinese GB standards, and can be supplied according to the technical requirements provided by customers.
China Low Alloy Steel Plate Distributors--GNEE Group

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