EN 10028-6 P690Q Steel Plate | P690Q QT High Strength Vessel Plate supplier

P690Q is the room-temperature quenched-and-tempered grade in the P690 family of EN 10028-6. Buyers search EN 10028-6 P690Q, P690Q steel plate, 1.8941, P690Q QT high strength vessel plate and P690Q supplier. The letter Q means quenched and tempered fine-grain plate. This page is not P690QH. QH is the elevated-temperature quality. This page is not P690QL1. QL1 is −40 °C. This page is not P690QL2. QL2 is −60 °C. This page is not P500Q. P500Q is a 500 MPa step. This page is not S690Q. S690Q is EN 10025-6 structural QT steel.

Yield is 690 MPa at ≤50 mm. Tensile is 770–940 MPa. Steel number is 1.8941. Delivery is QT (Q), not +N and not M. SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We buy this grade from qualified Chinese mills, check the certificate against EN 10028-6, and ship it to fabricators in the USA, Europe, Middle East, Southeast Asia, Africa and South America.

If a drawing says P690QL1, we will not ship P690Q and call 690 enough. If a drawing says S690Q, we will not ship P690Q and call QT automatic dual name unless both books are met. Dual marking with SA517 Grade Q is possible only when both books are fully met.

This plate sits in pressure vessel steel plates and high-strength low-alloy plates. Structural QT belongs on EN 10025-6. ASME QT vessel comparisons belong on ASME SA517 and ASME SA543.

EN 10028-6 P690Q Steel Plate | P690Q QT High Strength Vessel Plate supplier

Brief Description
EN 10028-6 P690Q is European QT high-strength vessel plate, steel number 1.8941. Yield is 690 MPa at ≤50 mm. Tensile is 770–940 MPa. SHH STEEL supplies P690Q worldwide as a global steel mill sourcing partner.

SEO Title
EN 10028-6 P690Q Steel Plate | P690Q QT High Strength Vessel Plate supplier – SHH STEEL

SEO Keywords
EN 10028-6 P690Q, P690Q, P690Q steel plate, 1.8941, P690Q QT high strength, P690Q equivalent, P690Q supplier

SEO Description
SHH STEEL supplies EN 10028-6 P690Q QT high-strength vessel plate worldwide, 690 MPa yield, 770–940 MPa tensile, steel number 1.8941. EN 10204 3.1/3.2 mill-direct supply. Contact now.

General Description

P690Q is the room-temperature quenched-and-tempered grade in the P690 family of EN 10028-6. Buyers search EN 10028-6 P690Q, P690Q steel plate, 1.8941, P690Q QT high strength vessel plate and P690Q supplier. The letter Q means quenched and tempered fine-grain plate. This page is not P690QH. QH is the elevated-temperature quality. This page is not P690QL1. QL1 is −40 °C. This page is not P690QL2. QL2 is −60 °C. This page is not P500Q. P500Q is a 500 MPa step. This page is not S690Q. S690Q is EN 10025-6 structural QT steel.

Yield is 690 MPa at ≤50 mm. Tensile is 770–940 MPa. Steel number is 1.8941. Delivery is QT (Q), not +N and not M. SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We buy this grade from qualified Chinese mills, check the certificate against EN 10028-6, and ship it to fabricators in the USA, Europe, Middle East, Southeast Asia, Africa and South America.

If a drawing says P690QL1, we will not ship P690Q and call 690 enough. If a drawing says S690Q, we will not ship P690Q and call QT automatic dual name unless both books are met. Dual marking with SA517 Grade Q is possible only when both books are fully met.

Material Specification

This plate sits in pressure vessel steel plates and high-strength low-alloy plates. Structural QT belongs on EN 10025-6. ASME QT vessel comparisons belong on ASME SA517 and ASME SA543.

Chemical Composition

Cast analysis follows EN 10028-6. Product analysis follows EN 10028-1 when ordered.

Cast Analysis and Product Analysis — EN 10028-6 P690Q (1.8941)

690 MPa after QT comes from quench and temper plus Ni-Cr-Mo micro-alloying, not from a high-carbon melt. SHH STEEL prints heat analysis on every certificate and product analysis when ordered. Density is 7.85 g/cm³.

Buyers search P690Q mechanical properties, P690Q yield strength and P690Q QT. Yield still falls with thickness.

Tensile and Yield — EN 10028-6 P690Q

Elongation is typically 14% min on thinner plate. Room-temperature quality Q does not automatically include −40 °C Charpy. If the file needs −40 °C, the grade name is P690QL1. If the file needs −60 °C, the grade name is P690QL2. If the file needs elevated-temperature proof strength, the grade name is P690QH.

Do not quote 690 MPa yield on a 120 mm plate. Do not treat 770–940 MPa tensile as permission to stamp SA517 Grade Q or S690Q without checking both books.

Buyers pick P690Q when a PED file wants 690 MPa quenched-and-tempered plate and does not name QL impact or QH elevated-temperature proof. Search phrases such as P690Q QT, P690Q high strength vessel plate and 1.8941 steel plate all point here.

It is not a substitute for SA517 Grade Q unless both books are met. It is not a substitute for S690Q. That grade is EN 10025-6 structural steel. An ASME QT file should name SA-517 or SA-543. Dual marking is possible only when chemistry, tensile, impact and delivery all fit.

SHH STEEL supplies this plate to fabricators in the United States, Mexico, South America, Europe, the Middle East, Africa and Asia.

P690Q is killed QT high-strength vessel plate at 770–940 MPa tensile. Treat welding as production welding, and as PED / ASME Code welding when the equipment is a vessel.

Qualify to the applicable code. Consumables must match the 690 MPa / 770–940 MPa band. A P500Q procedure is the previous family. A procedure written for SA516 Grade 70 is far too light. Preheat, interpass and hydrogen control must stay inside the qualified window so the QT structure is not damaged and delayed cracking is avoided. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.

Usual delivery from SHH STEEL is quenched and tempered EN 10028-6 P690Q (Q). This is not +N from EN 10028-3 and not M from EN 10028-5.

If the vessel will see PWHT, say so. 690 MPa QT properties can move after a long stress-relief cycle. Simulated PWHT on test coupons is worth naming. Extra simulation, 3.2 hold points or special NDE add time. Plan about two months when those extras are on the order.

The certificate lists EN 10028-6 P690Q; 1.8941; heat number; cast analysis; product analysis when ordered; tensile to the correct thickness column; Q / QT; impact only when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply range from SHH STEEL for P690Q QT high strength vessel plate:

• Thickness: commonly 8 mm – 150 mm, thicker by mill agreement
• Width: 1500 mm – 4000 mm
• Length: 3000 mm – 12000 mm

Structural 690 QT plate belongs on EN 10025-6. ASME QT vessel plate belongs on SA517 Grade Q.

Dimensional limits for EN 10028-6 P690Q follow EN 10028-1 and EN 10029 unless the purchase order names another table. Class A is the usual mill default for P690Q QT high strength vessel plate. Class B, Class C or Class D is supplied only when written. Do not apply ASTM A36 structural tolerances to a PED 690 MPa QT plate without writing them. When dual-named against SA517 Grade Q, write whether EN 10029 or SA-20 governs the minus on thickness.

Typical thickness tolerance idea for P690Q (EN 10029 Class A, reference)

Width on 1500–4000 mm plate is commonly held to about ±20–25 mm unless the mill quote names a tighter extra. Length on 3000–12000 mm plate is commonly held to about +50 / 0 mm or ±25 mm by mill practice. Flatness follows EN 10029 Class N unless Class S is written. Edge condition is mill edge or cut edge as ordered. If the vessel calculation used minimum thickness after corrosion, write the allowed minus on the RFQ. SHH STEEL will not assume Class B or a zero-minus extra on P690Q unless the order says so.

Charpy details. P690Q does not assume −40 °C. Write temperature and orientation if impact is required.

Product analysis. Add this when the destination file wants finished-plate chemistry, especially Ni, Cr, Mo, B, P and S.

Simulated PWHT. When the equipment will be stress-relieved. 690 MPa QT properties can move.

NDE. EN 10160 or the named UT class. Thick QT plate should be scanned after quench and temper.

Third-party. EN 10204 3.2 when written.

P690Q is the plate for a file that wants 690 MPa QT vessel steel and does not name QL impact. It is the wrong plate for a winter tank at −40 °C. That work is P690QL1. It is the wrong plate for S690Q structural work. That work is EN 10025-6.

SHH STEEL sources EN 10028-6 P690Q from first-line Chinese mills and ships it on worldwide terms. Partner mills include Wuyang (Wugang), Angang, Shougang, Hanye, Anyang Iron & Steel, Baosteel, Xinyu, Xingcheng, Yongjin, Tsingshan, TISCO (Taiyuan), Jiuquan (JISCO), Lianzhong, Zhangpu and Baoxin, plus other qualified mills when the size or QT route 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 stock and rolling thickness: 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 32 mm, 36 mm, 40 mm, 50 mm, 60 mm, 80 mm, 100 mm, thicker by mill agreement.

Processing: CNC or flame cutting, bevel, flattening, UT to EN 10160 or 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 ASTM, ASME, EN, DIN, JIS and GB 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; standard QT about 45–60 days; simulated PWHT / 3.2 about 2 months.

Experience on this grade is simple: keep the letter after P690. Q, QH, QL1 and QL2 are four different purchase orders, and none of them is S690Q. SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) prices P690Q from first-line mills, reports 1.8941 chemistry, records QT, and issues 3.1 as standard or 3.2 when specified.

We keep the grade on the order. P690Q is not P500Q. P690Q is not P690QL1. P690Q is not S690Q. P690Q is not Q345R steel plate. If the drawing says P690QL2, we will not ship P690Q and call QT close.

EN 10028-6 P690Q Steel Plate is European quenched-and-tempered high-strength pressure-vessel plate, steel number 1.8941, at the 690 MPa yield step and 770–940 MPa tensile at ≤50 mm. Whether the inquiry says EN 10028-6 P690Q, 1.8941, P690Q QT High Strength Vessel Plate or P690Q supplier, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with P690Q chemistry, recorded QT, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies EN 10028-6 P690Q QT High Strength Vessel Plate to the USA, Mexico, South America, Europe, the Middle East, Africa and Asia for work that actually names this grade.

Contact SHH STEEL for mill rolling, stock inquiry, cutting, bevel, 3.2 inspection or a worldwide quotation.

EN 10028-6 P690Q Steel Plate, P690Q QT high strength vessel plate, 1.8941, P690Q supplier, SHH STEEL