Q460ND Steel Plate GB/T 1591 Supplier

Q460ND, also searched as GB/T 1591 Q460ND, Q460ND steel plate, Q460ND plate and Q460 ND, is the 460 MPa quality-grade-D grade delivered normalized or normalizing-rolled in GB/T 1591-2018. Q is the yield symbol, 460 is the thin-plate minimum yield in MPa, N is the delivery letter, and D is the quality letter for Charpy impact at −20°C.

The N is the point of this page. Hot-rolled GB/T 1591 Q460D has no N. Thermomechanical Q460MD has an M. A hot-rolled certificate cannot be stamped ND. A TMCP certificate cannot be stamped ND. Grade C is 0°C and is GB/T 1591 Q460NC. E is −40°C. Q460 sits above GB/T 1591 Q420ND. Do not drop a 460 MPa drawing onto a 420 MPa plate.

Do not confuse this page with GB/T 16270 Q460D. That grade is quenched and tempered. Same yield number, different book, different process and different weld procedure. A GB/T 1591 certificate cannot be used as a GB/T 16270 certificate.

The closest process comparison is EN 10025-3 S460N, a normalized fine-grain grade also tested at −20°C. EN 10025-3 S460NL is colder. EN 10025-4 S460M is TMCP and closer to Q460MD. On the US side, ASTM A572 Gr.65 is 65 ksi / 450 MPa, one step lower, and it is not an ND twin. JIS G3106 SM570 is a lower Japanese comparison. Dual mark only when both books are fully met. See EN 10025-3 and high strength low alloy plates.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer and exporter, mill-direct, China origin. We source Q460ND from first-line structural mills, print heat analysis and product analysis when ordered, and ship plate to fabricators in the United States, Europe, the Middle East, Southeast Asia, Africa and South America. Related pages include structural steel plates and the products index.

Nearby pages that buyers compare, but must not swap blindly, include EN 10025-3 S460N, ASTM A572 Gr.65 and GB/T 1591 Q460D.

Heat analysis is the mill ladle table in GB/T 1591-2018 for normalized Q460. Product analysis, when ordered, follows GB/T 222. Q460ND is a microalloyed HSLA plate. Grade D is tighter on phosphorus and sulfur than grade C, because the impact test is at −20°C. Mills may add Nb, V, Ti, Cr or Ni. The certificate shows the elements actually used.

Heat Analysis and Product Analysis — GB/T 1591 Q460ND, normalized

Carbon equivalent is limited by thickness in the standard. The N route often has a different CEV window from hot-rolled GB/T 1591 Q460D. If the purchase order writes product analysis, SHH STEEL prints both columns and the thickness band used for the tensile test. Do not treat this chemistry as the QT chemistry on GB/T 16270 Q460D. A 420 MPa file is GB/T 1591 Q420ND, not this grade.

Buyers search Q460ND mechanical properties, Q460ND yield strength, GB/T 1591 Q460ND tensile and Q460ND impact −20°C.

Tensile and impact — GB/T 1591 Q460ND, normalized

Impact energy is the average of three longitudinal Charpy V-notch specimens, commonly 34 J minimum at −20°C. One value may fall below the table, but not below 70% of that value. Write a higher energy on the order if the owner requires it.

Yield steps down with thickness. A 460 MPa name on 12 mm plate is not the minimum on a 40 mm flange. 460 MPa is about 67 ksi. ASTM A572 Gr.65 is 65 ksi and is not this book. SHH STEEL quotes the thickness band and the N condition on the offer.

Density is 7.85 g/cm³. Hardness is not a design value for this grade. Z15, Z25 or Z35 through-thickness tensile is an extra, not part of the D letter.

A colder hot-rolled file is GB/T 1591 Q460E. A warmer 420 MPa file is GB/T 1591 Q420B.

There is no official one-to-one substitute for Q460ND. What buyers compare is a 460 MPa normalized plate tested at −20°C.

EN 10025-3 S460N is the closest process and temperature comparison. EN 10025-3 S460NL is colder. EN 10025-4 S460M is TMCP and closer to Q460MD. GB/T 16270 Q460D is quenched and tempered. In the United States, ASTM A572 Gr.65 is 65 ksi / 450 MPa. ASTM A572 Gr.60 is 60 ksi and is one step lower. ASTM A36 is 36 ksi and is well below this yield. In Japan, JIS G3106 SM570 is lower. SHH STEEL will not stamp EN 10025-3 S460N or ASTM A572 Gr.65 on a Q460ND certificate unless the purchase order names both books and both tables are met.

Buyers pick Q460ND when a bridge, building member or welded fabrication wants about 460 MPa yield, a normalized or normalizing-rolled condition, and impact at −20°C. Search phrases such as Q460ND steel plate and GB/T 1591 Q460ND all point here.

It is the wrong plate when the drawing says hot rolled only. That work is GB/T 1591 Q460D. It is the wrong plate when the drawing says TMCP. That work is Q460MD. It is the wrong plate for a 0°C file. That work is GB/T 1591 Q460NC. It is the wrong plate for a −40°C file. That work is Q460NE, and the hot-rolled sister is GB/T 1591 Q460E. It is the wrong plate for a 420 MPa file. That work is GB/T 1591 Q420ND or GB/T 1591 Q420E. It is the wrong plate when the drawing says quenched and tempered. That work is GB/T 16270 Q460D. It is the wrong plate for a pressure vessel. That work sits on ASTM A516 or pressure vessel steel plates.

SHH STEEL supplies this plate when the drawing names GB/T 1591, quality grade D, and the N condition at 460 MPa.

Q460ND is a weldable normalized HSLA structural plate. Carbon is controlled, and many heats use Nb, V or Ti. A procedure written for ASTM A36 is not a finished WPS for thick Q460ND. Carbon equivalent on the N route is not the same window as hot-rolled GB/T 1591 Q460D. A procedure qualified only at 0°C may miss the −20°C coupon. A procedure written for GB/T 16270 Q460D is a QT procedure and is not this page.

Typical consumables are matching 65 ksi / 460 MPa low-hydrogen electrodes or wires. E7018-class electrodes are under-matched if the joint must develop full plate strength. A procedure written for ASTM A572 Gr.65 is a useful strength reference after chemistry and the −20°C coupon are checked. Preheat follows thickness, hydrogen and the approved WPS. Thick plate and restrained joints need more preheat than a 10 mm web.

The fabricator owns the WPS. SHH STEEL can share mill heat data, product analysis and carbon equivalent for that review. Do not use a Q460ND procedure on Q460MD without checking the TMCP carbon equivalent.

Usual delivery from SHH STEEL for Q460ND is normalized or normalizing rolled. The plate is not hot rolled as GB/T 1591 Q460D and not thermomechanical rolled as Q460MD. It is not quenched and tempered unless the order moves to GB/T 16270.

Normalizing is typically about 880–920°C, followed by air cooling, unless the mill uses a normalizing-rolling route that the standard accepts for the N letter. Stress relief after fabrication, if used, should be agreed before cutting, because a high temper can move yield on a controlled heat.

The certificate lists GB/T 1591 Q460ND, heat number, delivery condition, heat analysis, product analysis when ordered, tensile by thickness band, and −20°C impact. Certificates may be EN 10204 3.1 or EN 10204 3.2. Dual marking to EN 10025-3 S460N is available only when both books are fully met.

Usual supply range from SHH STEEL for Q460ND steel plate:

• Thickness: commonly 8 mm – 60 mm, heavier plate to 80 mm by enquiry
• Width: 1500 mm – 2800 mm, wider by enquiry
• Length: 3000 mm – 12000 mm

Cut-to-size webs, flanges, base plates and gussets are available. Browse more sizes on structural steel plates.

Dimensional limits for Q460ND follow GB/T 709 unless the purchase order names EN 10029 or another table.

Typical thickness tolerance idea for Q460ND plate

Width on 1500–2800 mm plate is commonly held to about +20 / 0 mm or ±25 mm unless a tighter extra is named. Length on 3000–12000 mm plate is commonly held to about +50 / 0 mm. Flatness follows the agreed class. SHH STEEL will not assume a zero-minus extra on Q460ND unless the order says so.

Q460ND already defines 460 MPa yield, normalized delivery and −20°C impact. Extra items still have to be written on the purchase order.

Book name. Write GB/T 1591 Q460ND. Do not write only Q460, and do not write Q460D if the mill must stamp N. If the file needs QT, write GB/T 16270 Q460D.

Impact. Grade D is −20°C. Write a higher energy if the owner requires it. Do not expect a −40°C result unless the grade is changed to Q460NE.

Delivery condition. Write normalized or normalizing rolled. Write GB/T 1591 Q460D if hot rolled is enough. Write Q460MD if TMCP is required.

EN or US comparison. Write EN 10025-3 S460N or ASTM A572 Gr.65 only if dual mark is required and both tables are met.

Product analysis. Write it if the file needs the second chemistry column.

Through-thickness. Z15, Z25 or Z35 when the joint is loaded through the thickness.

NDE. UT to GB/T 2970 or the named class.

Identification. Heat number, Q460ND, GB/T 1591, thickness and mill logo.

Third-party witness. EN 10204 3.2 with SGS, TÜV, BV, ABS or the inspector named.

Q460ND is the plate for a 460 MPa normalized file tested at −20°C. It is the wrong plate for a painted weathering facade that needs corten. It is the wrong plate for a QT boom under GB/T 16270.

SHH STEEL sources Q460ND from first-line Chinese structural mills and ships it on worldwide terms. Partner mills include Wuyang (Wugang), Angang, Shougang, Hanye, Anyang Iron and Steel, Baosteel, Xinyu, Xingcheng and other qualified mills when the size requires it.

Mill test certificates are issued to EN 10204 3.1 as standard. EN 10204 3.2 is arranged when the order names a third-party hold point.

Usual rolling thickness: 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, 60 mm. Heavier plate is confirmed before order.

Processing: CNC or flame cutting, bevel, flattening, shot blast, UT to the named class.

Trade terms: FOB Shanghai main, CIF destination available. Payment: TT, LC, or TT + LC.

Ocean time from Shanghai: US West 14–18 days; US Gulf 28–35 days; Rotterdam / Antwerp 28–35 days; Jebel Ali 18–25 days; Singapore 7–12 days; other ports quoted.

Third-party: SGS, TÜV, BV, ABS, CCS, GL, VL, DNV, RINA, NK, KR, or the inspector named.

SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply GB, ASTM, ASME, EN, DIN and JIS steel to buyers in the United States, Europe, the Middle East, Southeast Asia, Africa and South America. Origin is mill-direct, China origin.

SHH STEEL has supplied steel plates to the USA, Mexico, Argentina, Peru, El Salvador, Spain, Netherlands, Germany, UAE, Saudi Arabia, South Africa, India, Thailand, Singapore, Vietnam, the Philippines, Japan and Korea.

Typical lead time: ex-stock 5–7 days when an N heat is in yard; standard normalizing about 30–45 days; 3.2 inspection about 40–50 days.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer and exporter, mill-direct, China origin. For Q460ND that means mill-direct structural price, not a multi-layer stockist mark-up. We buy from mills that can actually normalize or normalizing-roll the heat, so the N is on the certificate and not only in the enquiry.

Delivery is short when the size is in rolling range: ex-stock 5–7 days, standard N heat about 30–45 days, 3.2 inspection about 40–50 days. Cutting, bevel and UT can run in the same window. FOB Shanghai is the main term. CIF to US West, US Gulf, Rotterdam, Jebel Ali and Singapore is quoted on the same file.

Experience on this grade is simple: print GB/T 1591 Q460ND, keep the normalized route, and do not ship GB/T 1591 Q460D or GB/T 16270 Q460D as ND. We will not drop the N to save a furnace cycle, and we will not change D to C to save a cold test. If the drawing needs QT plate, we will move the inquiry to GB/T 16270 and keep the price on the right book.

Q460ND steel plate to GB/T 1591 is 460 MPa normalized structural plate with impact at −20°C. It is not hot-rolled GB/T 1591 Q460D and not GB/T 16270 Q460D. The nearest European comparison is EN 10025-3 S460N. ASTM A572 Grade 65 is 450 MPa and is not a substitute. Whether the inquiry says Q460ND, GB/T 1591 Q460ND or Q460ND steel plate, SHH STEEL as a global steel mill sourcing partner supplies plate with Q460ND chemistry, heat and product analysis as ordered, GB/T 709 tolerances and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies Q460ND Steel Plate to the United States, Europe, the Middle East, Africa, Asia and the Americas for work that actually names the N condition.

Contact SHH STEEL for mill rolling, normalized Q460ND, cutting, UT, 3.2 inspection or a worldwide quotation.

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