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Q420 steel plate

Q420 steel is a Chinese steel grade of Low Alloy High Strength Structural Steel, Yield Strength is 420 MPa and tensile strength is 520-680 Mpa, the material density is 7.85 g/cm3.A wide variety of q420 steel options are available to you, such as hot rolled, cold rolled. You can also choose from steel plate, steel coil, and alloy steel bar q420 steel

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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	–	–
Q420	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

ISO

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Grade

Standard

Grade

Standard

Grade

Standard

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Standard

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Standard

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Standard

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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

Warehouse Storage

TIANYI Steel (Shandong) Co., Ltd. is located in the beautiful Shandong Province. With the continuous development of business, the company's business scope continues to expand. The company has a group of professional sales staff to provide customers with high-quality services. The company is committed to providing customers with high-quality, low-cost steel products. We have won the trust and praise of our customers with our commitment and quality-oriented service concept.

Packing and shipping

Our main products include: carbon steel plate, carbon steel pipe, color-coated sheet/coil, galvanized sheet/sheet tube/coil/corrugated sheet/plate steel (I-beam channel steel H-beam), long product, galvanized pipe, Welded pipe, gas pipe, spiral pipe, plate, thread, wire, automobile flat steel, etc. The stock of each specification is sufficient. And it is an excellent distributor of Chinese state-owned enterprises: Baosteel, Baotou Steel, Anshan Iron and Steel, Baotou Iron and Steel, and other national iron and steel enterprises.

Application field

Our advantage is to integrate market information, quickly find the products you need, provide high-quality price concessions, one-stop service, and provide you with products accurately and quickly. We always adhere to the tenet of "quality first, customer first, high-quality service, honesty and trustworthiness". With high-quality products, good reputation and high-quality service. We are committed to win-win cooperation with domestic and foreign merchants. We look forward to common development and create brilliance together. Feel free to contact our team to experience supreme service and quality products. Looking forward to working with us.

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FAQ

Q1:Can you send samples?

A:Of course, we can provide customers with free samples and express shipping service to all over of the world.

Q2:What product information do I need to provide?

A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.

Q3:It's my first time to import steel products, can you help me with it?

A:Sure,we have agent to arrange the shipment, we will do it together with you.

Q4:What about product prices information?

A:Prices various according to periodic price changes of raw materials.

Q5:What ports of shipment are there?

A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.

Q6:What is your terms of payment ?

A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.

Q7.Do you provide custom made Products service?

A: Yes,if you have your own design , we can produce according to your specification and drawing.

Q8:What are the certifications for your products?

A:We have ISO 9001, MTC, third parties’ inspections are all available such SGS, BV ect.

Q9:How long does your delivery time take?

A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.

Q10: How many countries you already exported to?

A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.

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