EN 10028-2 20MnMoNi4-5 Steel Plate | 20MnMoNi4-5 Mn-Mo-Ni Vessel Plate

20MnMoNi4-5 is the manganese-molybdenum-nickel grade in EN 10028-2. Buyers search EN 10028-2 20MnMoNi4-5, 20MnMoNi4-5 steel plate, 1.6311, 20MnMoNi4-5 equivalent and 20MnMoNi4-5 Mn-Mo-Ni vessel plate. Steel number is 1.6311. Manganese is about 1.00–1.50%. Molybdenum is about 0.45–0.60%. Nickel is about 0.40–0.80%. That nickel step is why this page is not 18MnMo4-5 and not 16Mo3.

Yield is in the 470 MPa class at ≤16 mm. Tensile is 590–750 MPa. Delivery is usually normalized and tempered (+NT). SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplying this grade to the USA, Europe, Middle East, Southeast Asia, Africa and South America.

Do not ship 18MnMo4-5 against a 20MnMoNi4-5 drawing. 18MnMo4-5 has no 0.40–0.80% nickel requirement. Do not ship P355GH and call carbon the same as Mn-Mo-Ni. The closest ASME talk grades are SA302 Grade C, SA302 Grade D and SA533 Type B Class 1. The closest Chinese talk grade is 13MnNiMoR steel plate. Dual marking is possible only when chemistry, tensile, impact and delivery all fit.

Company scope: global exporter SHH STEEL.

This plate sits in pressure vessel steel plates. Mn-Mo comparisons belong on ASME SA302. Mn-Mo-Ni quenched-and-tempered comparisons belong on ASME SA533.

Cast analysis follows EN 10028-2 Table 1. Product analysis follows EN 10028-1 when ordered. Google queries such as 20MnMoNi4-5 chemical composition and 1.6311 chemistry should be answered from this table, not from an 18MnMo4-5 table.

Cast Analysis and Product Analysis — EN 10028-2 20MnMoNi4-5 (1.6311)

Nickel is the difference versus 18MnMo4-5. Molybdenum is the difference versus P355GH. Phosphorus and sulfur stay tight because this grade is used on heavier vessel courses. There is no 1% chromium requirement. This is Mn-Mo-Ni plate, not Cr-Mo plate and not 9Cr plate. SHH STEEL reports cast analysis on every certificate and product analysis when ordered. Density is 7.85 g/cm³.

Buyers search 20MnMoNi4-5 mechanical properties, 20MnMoNi4-5 yield strength and 1.6311 tensile. Room-temperature values fall with thickness. Use the thickness column on the mill certificate.

Tensile and Yield — EN 10028-2 20MnMoNi4-5

Elongation is typically 18–19% min on thinner plate. Impact at 0 °C, 27 J, is the usual option when the order names it. Some European files ask a lower test temperature. Write it. Elevated-temperature proof strength is part of EN 10028-2. Ask for that table when the vessel calculation uses design temperature.

Do not quote 470 MPa yield on an 80 mm plate. Do not treat 590–750 MPa tensile as permission to stamp SA302 Grade C or SA533 Type B Class 2 without checking both books.

Search habits mix 20MnMoNi4-5 equivalent, 1.6311 equivalent and 20MnMoNi4-5 vs SA302 Grade C. Those names help a buyer find the right page. They do not authorize substitution.

Buyers pick 20MnMoNi4-5 when the PED file wants manganese-molybdenum plate with a nickel lift. That is the whole point of this grade. Search phrases such as 20MnMoNi4-5 boiler plate, 1.6311 steel plate and 20MnMoNi4-5 pressure vessel plate all point here.

Do not ship SA387 Grade 12 Class 2 against 20MnMoNi4-5. That grade is 1.25Cr-0.5Mo. Do not ship SA387 Grade 22 Class 2 either. An ASME file that wants Mn-Mo-Ni plate should name SA-302 or SA-533 on ASME SA302 and then write extras. 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. The purchase is not limited to China, Hong Kong or Singapore.

20MnMoNi4-5 is Mn-Mo-Ni vessel plate. Treat welding as production welding, and as PED / ASME Code welding when the equipment is a vessel.

Qualify to the applicable code. ASME dual-name work uses ASME Section IX. Consumables must match the 590–750 MPa tensile band and the nickel in the base metal. A carbon procedure written for SA516 Grade 70 is not automatically valid. A Mn-Mo procedure written for 18MnMo4-5 is the previous family. A Cr-Mo procedure written for SA387 Grade 12 Class 1 is a different family. Preheat follows thickness and hydrogen control. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.

Usual delivery from SHH STEEL is normalized and tempered EN 10028-2 20MnMoNi4-5 (+NT). Buyers who search 20MnMoNi4-5 NT or 20MnMoNi4-5 heat treatment are asking for this route.

If the vessel will see PWHT, say so. Test coupons then follow a simulated cycle. 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 10028-2 20MnMoNi4-5; 1.6311; heat number; cast analysis including nickel and molybdenum; product analysis when ordered; tensile to the correct thickness column; +NT; impact when ordered; elevated-temperature values when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.

Usual supply range from SHH STEEL for 20MnMoNi4-5 Mn-Mo-Ni vessel plate:

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

Chinese Mn-Ni-Mo plate belongs on 13MnNiMoR steel plate. Carbon vessel plate belongs on Q345R steel plate. Cr-Mo plate belongs on 15CrMoR steel plate.

Dimensional limits follow EN 10028-1 and EN 10029 unless the order names another tolerance table. Do not apply ASTM A36 structural tolerances to a PED vessel plate without writing them.

Charpy details. Temperature, energy, location and orientation. 0 °C / 27 J is common, not assumed.

Product analysis. Add this when the destination file wants finished-plate chemistry, especially nickel and molybdenum.

Elevated-temperature proof strength. Add this when the calculation uses design temperature.

Simulated PWHT. When the equipment will be stress-relieved.

NDE. EN 10160 or the named UT class.

Third-party. EN 10204 3.2 when written.

SHH STEEL sources EN 10028-2 20MnMoNi4-5 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 heat-treatment 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 for this family: 8 mm, 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, with thicker plate by mill agreement. Width and length follow the mill table above.

Processing available with the plate: CNC or flame cutting to drawing, bevel preparation, flattening, and ultrasonic testing to EN 10160 or the named class. Extra NDE is written on the order, not assumed.

Trade terms: FOB Shanghai is the usual main term. CIF to the buyer’s destination port can be quoted. Payment is TT, LC, or TT + LC, as agreed on the contract.

Destination ports and typical ocean time from Shanghai, subject to sailing and customs:

• US West Coast (Los Angeles / Long Beach / Oakland): about 14–18 days
• US Gulf (Houston / New Orleans): about 28–35 days
• Rotterdam / Antwerp: about 28–35 days
• Jebel Ali: about 18–25 days
• Singapore: about 7–12 days
• Other major ports in Mexico, South America, the Mediterranean, India, Africa, Japan and Korea: quoted case by case

Third-party inspection can be SGS, TÜV, BV, ABS, CCS, GL, VL, DNV, RINA, NK, KR, or the inspector the buyer names. The hold point is booked before rolling or before shipment, depending on the 3.2 scope.

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. The commercial offer is not limited to one region.

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: about 5–7 days when Mn-Mo-Ni plate is in yard
• Mill rolling, standard +NT: about 45 days
• Simulated PWHT, 3.2 or extra NDE: about 2 months

Company scope: worldwide delivery SHH STEEL.

SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). On EN 10028-2 20MnMoNi4-5 that means mill pricing from Wuyang, Angang, Baosteel and other first-line mills, 1.6311 chemistry reported as cast analysis and as product analysis when ordered, recorded +NT, tensile results to the correct thickness column, 3.1 as standard and 3.2 when specified.

We keep the grade on the order. 20MnMoNi4-5 is not 18MnMo4-5. 20MnMoNi4-5 is not 16Mo3. 20MnMoNi4-5 is not SA387 Grade 12 Class 2. 20MnMoNi4-5 is not Q345R steel plate. If the drawing says 18MnMo4-5, we will not ship 20MnMoNi4-5 and call nickel close.

Company scope: global exporter SHH STEEL.

EN 10028-2 20MnMoNi4-5 Steel Plate is European manganese-molybdenum-nickel high-temperature pressure-vessel plate, steel number 1.6311, at the 470 MPa yield class and 590–750 MPa tensile at ≤16 mm, usually +NT. Whether the inquiry says EN 10028-2 20MnMoNi4-5, 1.6311 or 20MnMoNi4-5 Mn-Mo-Ni Vessel Plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with 20MnMoNi4-5 chemistry, heat and product analysis when ordered, recorded +NT, and EN 10204 3.1 or 3.2 certification.

SHH STEEL supplies EN 10028-2 20MnMoNi4-5 Mn-Mo-Ni 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 10028-2 20MnMoNi4-5 Steel Plate, 20MnMoNi4-5 Mn-Mo-Ni vessel plate, 1.6311, 20MnMoNi4-5 supplier, global exporter SHH STEEL