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Q420 Low Alloy High Strength Steel
High Strength Steel Product Description
Q420 hsla steel plate is a kind of low alloy high strength structural steel, the implementation standard is GB1591-2008. Q420 hsla steel sheet is divided into 5 quality grades: Q420A hsla structural steel, Q420B low alloy steel plate, Q420C low alloy structural steel, Q420D low alloy steel sheet and Q420E high strength steel plate.
Q420 high strength low alloy steel plate has high strength, good fatigue resistance; high toughness and low brittle transition temperature; good cold forming performance and welding performance; good corrosion resistance and certain wear resistance. It has high strength, especially in the normalizing or normalizing and tempering state, and has high comprehensive mechanical properties.
Q420 high strength low alloy steel sheet is suitable for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, overweight machinery, mining machinery, and other large welded structural parts.
High Strength Low Alloy Hsla Steel Products Details
Q420 High Tensile Steel Chemical Composition:
| grade | C | Mn | Si | P | S | V | Nb | Ti | Al | Cr | Ni |
| A | ≦0.20 | 1.00～1.70 | ≦0.55 | ≦0.045 | ≦0.045 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | - | ≦0.40 | ≦0.70 |
| B | ≦0.20 | 1.00～1.70 | ≦0.55 | ≦0.040 | ≦0.040 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | - | ≦0.40 | ≦0.70 |
| C | ≦0.20 | 1.00～1.70 | ≦0.55 | ≦0.035 | ≦0.035 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | ≧0.015 | ≦0.40 | ≦0.70 |
| D | ≦0.20 | 1.00～1.70 | ≦0.55 | ≦0.030 | ≦0.030 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | ≧0.015 | ≦0.40 | ≦0.70 |
| E | ≦0.20 | 1.00～1.70 | ≦0.55 | ≦0.025 | ≦0.025 | 0.02～0.20 | 0.015～0.060 | 0.02～0.20 | ≧0.015 | ≦0.40 | ≦0.70 |
Q420 High Strength Low Alloy Structural Steel Elongation(δ5/%):
| grade | δ5/% |
| A | ≧18 |
| B | ≧18 |
| C | ≧19 |
| D | ≧19 |
| E | ≧19 |
Q420 High Strength Alloy Steel Equivalent Steel Grades:
| China | USA | Germany | Japanese | France | UK |
| Grade | Grade | Grade | Grade | Grade | Grade |
| Q420A | Gr.60,Gr.E | - | - | E420-1 | - |
| Q420B | Gr.60,Gr.E | S420NL,S420ML | SEV295,SEV345 | S420NL,S420ML | S420NL,S420ML |
| Q420C | Gr.B,TyPe7 | S420NL,S420ML | SEV295,SEV345 | S420NL,S420ML | S420NL,S420ML |
| Q420D | Gr.B,TyPe7 | S420NL,S420ML | SEV295,SEV345 | S420NL,S420ML | S420NL,S420ML |
| Q420E | Gr.B,TyPe7 | S420NL,S420ML | SEV295,SEV345 | S420NL,S420ML | S420N,LS420ML |
High Strength Low Alloy Products Image
Gnee Group Introduction
GNEE was established in 2008 and currently employs 150 people. Our experienced staff are dedicated to strict quality control and thoughtful customer service, ready to discuss your requirements and ensure complete customer satisfaction.
In addition, we have also obtained ISO9001, ISO 14001 certificates. The products sell well in all provinces and cities across the country and are exported to customers in Europe, America, Southeast Asia, Africa and other countries and regions.
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If you have more needs and questions about Q420 low alloy high strength steel products, please contact us!