EN 10028-6 P690QH Steel Plate | P690QH QT High Temp Vessel Plate supplier

P690QH is the elevated-temperature quenched-and-tempered quality in the P690 family of EN 10028-6. Buyers search EN 10028-6 P690QH, P690QH steel plate, 1.8942, P690QH QT high temp vessel plate and P690QH supplier. The letters QH mean QT plate with specified proof strength at elevated temperature. This page is not P690Q. Q is room-temperature QT. This page is not P690QL1. QL1 is −40 °C. This page is not P690QL2. QL2 is −60 °C. This page is not P500QH. P500QH 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 at room temperature. Tensile is 770–940 MPa. Steel number is 1.8942. Delivery is QT (Q). Elevated-temperature proof values must sit on the certificate when the order follows QH. 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 P690Q, we will not ship P690QH and call 690 enough. If a drawing says S690Q, we will not ship P690QH and call high temp automatic dual name unless both books are met. Dual marking with SA517 Grade Q is possible only when chemistry, tensile, elevated-temperature proof and delivery all fit.

This plate sits in pressure vessel steel plates and high-strength low-alloy plates. High-temp Cr-Mo sisters belong on EN 10028-2. Structural QT belongs on EN 10025-6.

EN 10028-6 P690QH Steel Plate | P690QH QT High Temp Vessel Plate supplier

Brief Description
EN 10028-6 P690QH is European QT high-strength high-temperature vessel plate, steel number 1.8942. Yield is 690 MPa at ≤50 mm. Elevated-temperature proof is specified. SHH STEEL supplies P690QH worldwide as a global steel mill sourcing partner.

SEO Title
EN 10028-6 P690QH Steel Plate | P690QH QT High Temp Vessel Plate supplier – SHH STEEL

SEO Keywords
EN 10028-6 P690QH, P690QH, P690QH steel plate, 1.8942, P690QH QT high temp, P690QH equivalent, P690QH supplier

SEO Description
SHH STEEL supplies EN 10028-6 P690QH QT high-temp vessel plate worldwide, 690 MPa yield, 770–940 MPa tensile, steel number 1.8942. EN 10204 3.1/3.2 mill-direct supply. Contact now.

General Description

P690QH is the elevated-temperature quenched-and-tempered quality in the P690 family of EN 10028-6. Buyers search EN 10028-6 P690QH, P690QH steel plate, 1.8942, P690QH QT high temp vessel plate and P690QH supplier. The letters QH mean QT plate with specified proof strength at elevated temperature. This page is not P690Q. Q is room-temperature QT. This page is not P690QL1. QL1 is −40 °C. This page is not P690QL2. QL2 is −60 °C. This page is not P500QH. P500QH 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 at room temperature. Tensile is 770–940 MPa. Steel number is 1.8942. Delivery is QT (Q). Elevated-temperature proof values must sit on the certificate when the order follows QH. 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 P690Q, we will not ship P690QH and call 690 enough. If a drawing says S690Q, we will not ship P690QH and call high temp automatic dual name unless both books are met. Dual marking with SA517 Grade Q is possible only when chemistry, tensile, elevated-temperature proof and delivery all fit.

Material Specification

This plate sits in pressure vessel steel plates and high-strength low-alloy plates. High-temp Cr-Mo sisters belong on EN 10028-2. Structural QT belongs on EN 10025-6.

Chemical Composition

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

Cast Analysis and Product Analysis — EN 10028-6 P690QH (1.8942)

QH uses the same P690 QT melt family as P690Q. The extra on this page is elevated-temperature proof, not extra nickel. SHH STEEL prints heat analysis on every certificate and product analysis when ordered. Density is 7.85 g/cm³.

Buyers search P690QH mechanical properties, P690QH yield strength and P690QH high temperature. Room-temperature values follow the Q table. Elevated-temperature proof is the QH item.

Tensile and Yield at room temperature — EN 10028-6 P690QH

Elevated-temperature 0.2% proof strength idea (P690QH, thin-plate class)

Use the official EN 10028-6 table for the thickness column on the mill certificate. Elongation is typically 14% min at room temperature. QH does not automatically include −40 °C Charpy. If the file needs −40 °C, the grade name is P690QL1.

Do not quote 690 MPa yield on a 120 mm plate. Do not treat QH as permission to stamp SA517 Grade Q or EN 10028-2 13CrMo4-5 without checking both books.

Buyers pick P690QH when a PED file wants 690 MPa QT plate and proof strength at 200–400 °C. Search phrases such as P690QH high temp, P690QH QT and 1.8942 steel plate all point here.

It is not a substitute for EN 10028-2 16Mo3. That grade is 0.3Mo high-temp steel. It is not a substitute for EN 10028-2 13CrMo4-5. That grade is 1.25Cr-0.5Mo. An ASME QT file should name SA-517 or SA-543 with the design temperature written. Dual marking is possible only when both books are met.

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

P690QH 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 keep strength after a possible PWHT cycle. A P500QH procedure is the previous family. A Cr-Mo procedure written for SA387 Grade 22 Class 2 is the wrong family. Preheat, interpass and hydrogen control must stay inside the qualified window so the QT structure is not damaged. 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 P690QH (Q). Elevated-temperature proof tests are added when the order names QH.

If the vessel will see PWHT, say so. 690 MPa QT plus elevated-temperature proof 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 P690QH; 1.8942; heat number; cast analysis; product analysis when ordered; tensile to the correct thickness column; Q / QT; elevated-temperature proof when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply range from SHH STEEL for P690QH QT high temp 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 P690QH follow EN 10028-1 and EN 10029 unless the purchase order names another table. Class A is the usual mill default for P690QH QT high temp vessel plate. Class B, Class C or Class D is supplied only when written. Do not apply ASTM A36 structural tolerances to a PED QT high-temp plate without writing them.

Typical thickness tolerance idea for P690QH (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 P690QH unless the order says so.

Elevated-temperature proof. Write the test temperatures required by the design.

Charpy details. QH does not assume −40 °C. Write temperature if impact is also required.

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

Product analysis. Especially Ni, Cr, Mo, B, P and S.

NDE. EN 10160 or the named UT class.

Third-party. EN 10204 3.2 when written.

P690QH is the plate for a 690 MPa PED file that wants QT and elevated-temperature proof. It is the wrong plate for a winter tank at −40 °C. That work is P690QL1. It is the wrong plate for 2.25Cr-1Mo service. That work is EN 10028-2 10CrMo9-10.

SHH STEEL sources EN 10028-6 P690QH 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; elevated-temperature tests / 3.2 about 2 months.

Experience on this grade is simple: keep the letters after P690. Q, QH, QL1 and QL2 are four different purchase orders. SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) prices P690QH from first-line mills, reports 1.8942 chemistry, records QT, prints elevated-temperature proof when ordered, and issues 3.1 as standard or 3.2 when specified.

We keep the grade on the order. P690QH is not P690Q. P690QH is not P500QH. P690QH is not S690Q. P690QH is not Q345R steel plate. If the drawing says P690QL1, we will not ship QH and call high temp close.

EN 10028-6 P690QH Steel Plate is European quenched-and-tempered high-strength high-temperature pressure-vessel plate, steel number 1.8942, at the 690 MPa yield step and 770–940 MPa tensile at ≤50 mm. Whether the inquiry says EN 10028-6 P690QH, 1.8942, P690QH QT High Temp Vessel Plate or P690QH supplier, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with P690QH chemistry, recorded QT, elevated-temperature proof when ordered, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies EN 10028-6 P690QH QT High Temp 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 P690QH Steel Plate, P690QH QT high temp vessel plate, 1.8942, P690QH supplier, SHH STEEL