Shandong Jeno Steel Group Co., Ltd.
Q420 steel plate
Classification :
Keywords: Handheld refractometer
PRODUCT DETAILS
Q420 Steel Introduction
Q420 steel is a Chinese steel grade of Low Alloy High Strength Structural Steel, Yield Strength is 420 MPa, parameters are tested with 16mm diameter steel bars or steel plates, and tensile strength is 520-680 Mpa, the material density is 7.85 g/cm3. According to GB/T 1591-2008, Q420 has 5 quality levels: Q420A, Q420B, Q420C, Q420D and Q420E. For Q420 steel equivalent, chemical composition and mechanical properties, please see the tables below content.
Features and Uses
Q420 steel has high strength, especially in normalized or normalized plus tempered state, with high comprehensive mechanical properties, can be used in large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, lifting machinery, mining machinery and other large welded structural parts.
Chemical composition & Mechanical property
Chemical Composition of Q420 Steel
| Chemical Composition % (GB/T 1591 – 2008) | ||||||||||||||||
| Steel Grade | Grade | C (≤) | Si (≤) | Mn (≤) | P (≤) | S (≤) | Nb (≤) | V (≤) | Ti (≤) | Cr (≤) | Ni (≤) | Cu (≤) | N (≤) | Mo (≤) | B (≤) | Als (≥) |
| Q420 | Q420A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.20 | 0.20 | 0.30 | 0.80 | 0.30 | 0.015 | 0.20 | – | – |
| Q420B | 0.035 | 0.035 | – | |||||||||||||
| Q420C | 0.030 | 0.030 | 0.015 | |||||||||||||
| Q420D | 0.030 | 0.025 | 0.015 | |||||||||||||
| Q420E | 0.025 | 0.020 | 0.015 | |||||||||||||
| Chemical Composition % (GB/T 1591 – 2018) | |||||||||||||||
| Steel Grade | Grade | C (≤) | Si (≤) | Mn (≤) | P (≤) | S (≤) | Nb (≤) | V (≤) | Ti (≤) | Cr (≤) | Ni (≤) | Cu (≤) | N (≤) | Mo (≤) | B (≤) |
| Q420 | Q420B | 0.20 | 0.55 | 1.70 | 0.035 | 0.035 | 0.05 | 0.13 | 0.05 | 0.30 | 0.80 | 0.40 | 0.015 | 0.20 | – |
| Q420C | 0.030 | 0.030 | |||||||||||||
Table-2, Carbon Equivalent Value (CEV)
Steel delivered in hot rolled state (based on smelting analysis)
| CEV (Mass fraction ≤%); Nominal thickness or diameter Ø | ||||||
| Steel Grade | Quality Grade | ≤ 30 | 30 < Ø ≤ 63 | 63 < Ø ≤ 150 | 150 < Ø ≤ 250 | 250 < Ø ≤ 400 |
| Q420 | Q420B | 0.45 (CEV) | 0.47 | 0.48 | 0.49 | – |
| Q420C | ||||||
Table-3, Q420 Steel Mechanical Properties (Hot rolled)
| Thickness or Dia. (Ø) mm; Yield Strength (≥N/mm2) | ||||||||||
| Steel Grade | Quality | Ø≤16 | 16< Ø ≤40 | 40 < Ø ≤63 | 63 < Ø ≤ 80 | 80 < Ø ≤ 100 | 100 < Ø ≤ 150 | 150 < Ø ≤ 200 | 200 < Ø ≤ 250 | 250 < Ø ≤ 400 |
| Q420 | Q420B | 420 | 410 | 390 | 370 | 370 | 350 | – | – | – |
| Q420C | ||||||||||
| Dia. (Ø) mm; Tensile Strength (N/mm2) | |||||
| Steel Grade | Quality Level | Ø≤100 | 100 < Ø ≤ 150 | 150 < Ø ≤ 250 | 250 < Ø ≤ 400 |
| Q420 | Q420B | 520 – 680 | 500 – 650 | – | – |
| Q420C | |||||
Table-4, Elongation
| Dia. (Ø) mm; Elongation (%) | |||||||
| Steel Grade | Sample direction | Ø≤40 | 40 < Ø ≤ 63 | 63 < Ø ≤ 100 | 100 < Ø ≤ 150 | 150 < Ø ≤ 200 | 250 < Ø ≤ 400 |
| Q420 | Horizontal | 20 | 19 | 19 | 18 | – | – |
| Vertical | 21 | 20 | 20 | 19 | – | – | |
Q420 steel equivalent to US ASTM, European EN, Germany DIN, Japan JIS, France NF, UK BS and ISO standard (For reference purposes only)
| China | USA | Germany | Japanese | France | UK | ISO | |||||||
| Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade |
| GB/T 1591 – 2008 | Q420A | ASTM A572M, ASTM A633M |
Gr.60, Gr.E |
NF A36-201 | E420-1 | ISO 4996, ISO 4951 |
HS420D E420CC |
||||||
| GB/T 1591 – 2008 | Q420B | ASTM A572M, ASTM A633M |
Gr.60, Gr.E |
DIN EN 10113-2, DIN EN 10113-3 |
S420NL, S420ML |
JIS G3124 | SEV295, SEV345 |
NF EN 10113-2, NF EN 10113-3 |
S420NL, S420ML |
BS EN 10113-2, BS EN 10113-3 |
S420NL S420ML |
ISO 4996, ISO 4951 |
HS420D E420CC |
| GB/T 1591 – 2008 | Q420C | ASTM A678M, ASTM A656M |
Gr.B, TyPe7 |
DIN EN 10113-2, DIN EN 10113-3 |
S420NL, S420ML |
JIS G3124 | SEV295, SEV345 |
NF EN 10113-2, NF EN 10113-3 |
S420NL, S420ML |
BS EN 10113-2, BS EN 10113-3 |
S420NL S420ML |
ISO 4996, ISO 4951 |
HS420D E420CC |
| GB/T1591 – 2008 | Q420D | ASTM A678M, ASTM A656M |
Gr.B, TyPe7 |
DIN EN 10113-2, DIN EN 10113-3 |
S420NL, S420ML |
JIS G3124 | SEV295, SEV345 |
NF EN 10113-2, NF EN 10113-3 |
S420NL, S420ML |
BS EN 10113-2, BS EN 10113-3 |
S420NL S420ML |
||
| GB/T1591 – 2008 | Q420E | ASTM A678M, ASTM A656M |
Gr.B, TyPe7 |
DIN EN 10113-2, DIN EN 10113-3 |
S420NL, S420ML |
JIS G3124 | SEV295, SEV345 |
NF EN 10113-2, NF EN 10113-3 |
S420NL, S420ML |
BS EN 10113-2, BS EN 10113-3 |
S420NL S420ML |
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Warehouse storage
Shandong Jienuo Metal Products Co., Ltd. has a registered capital of 250 million yuan, more than 635 employees, 100 million yuan of property/plant equipment, covering an area of more than 300 acres, and has passed the international quality management system, energy management system, occupational health and safety management system and other standards. The company has advanced production equipment, superb technical force, excellent management and technical personnel, and strong financial strength to provide a strong guarantee for the production of high-quality, sophisticated and cutting-edge products.
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The company has ISO9001 certification, EU CE10219 system certification, and Swiss SGS quality standard certification. In the future, the company will be a comprehensive modern enterprise featuring international trade and modern logistics as its development direction. Work together to make unremitting efforts for the green future of the steel industry in China and the world.
Application field
Widely used in prefabricated steel structure buildings, glass curtain wall engineering, steel structure engineering, large venues, airport construction, highways, roads, decorative guardrails, tower crane manufacturing, photovoltaic projects, greenhouse agricultural shanty buildings, bridge manufacturing, ships, automobile manufacturing, machinery In many fields such as manufacturing, it has been well received in major construction projects.
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At the same time, we also look forward to sincere cooperation with customers and friends from all over the world, mutual benefit and win-win results, and common development, and create brilliant!
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