20MnMoNi4-5 1.6311 Mn Mo Ni Pressure Vessel Forgings for Nuclear, Boiler Petrochemical Shell Rings Tube Sheets Discs Nozzles

Product Description

20MnMoNi4-5 forging India, W.Nr. 1.6311, ASTM A508 Gr.3, manganese molybdenum nickel pressure vessel steel, shell ring, tube sheet, seamless rolled rings, EN 10028-2, forging supplier

Description:

Jiangsu Liangyi is an ISO 9001:2015-certified forging manufacturer in China supplying 20MnMoNi4-5 / W.Nr. 1.6311 (Mn-Mo-Ni pressure-vessel steel) open-die forgings, seamless rolled rings and discs to nuclear, boiler, petrochemical and power projects in India and worldwide, to EN 10028-2 / EN 10250-3.

Why 20MnMoNi4-5 / 1.6311 for Indian nuclear, boiler and petrochemical projects

20MnMoNi4-5 is a fine-grained Mn-Mo-Ni pressure-vessel steel with strength, high toughness and excellent weldability in heavy sections, comparable to ASTM A508 Grade 3. For India's nuclear, power, boiler and petrochemical sectors, 1.6311 suits reactor pressure-vessel forgings, shell rings, tube sheets, nozzles, discs and heavy-wall parts.

Documented capability

Nuclear/power: reactor pressure-vessel forgings, containment parts, steam-generator components, shell rings, nozzles, discs.

Pressure vessels/boilers: shell rings, tube sheets, flanges, heads, heavy-wall forgings.

Petrochemical: reactor/exchanger forgings, nozzles, sleeves, pressure-retaining parts.

Product range for Indian buyers

Round bars, forged blocks; seamless rolled rings, shell rings, flanges, tube sheets; shafts, discs, plates; sleeves, hubs, nozzles; heavy-wall hollow forgings; custom pressure-vessel forgings.

Material data

Chemistry (EN 10028-2, wt%): C 0.150.23, Si 0.40, Mn 1.001.50, Ni 0.400.80, Mo 0.450.60, Cr 0.20, P 0.020, S 0.010. Tensile 570750 MPa, yield 430 MPa, KV 41 J; austenitise 870940 C + water quench, temper 610690 C; service ~375 C. ASTM A508 Gr.3 comparable.

Standards & quality

Manufactured to EN 10028-2 / EN 10250-3 / SEW 088; EAF + LF + VD melting (ESR on request); 100% UT; third-party inspection (TUV/SGS/BV) on request; EN 10204-3.1 / 3.2.

Commercial & logistics

Lead time by project; FOB Shanghai / CIF to Nhava Sheva, Mundra, Chennai, Kandla, Visakhapatnam.

Enquire with Jiangsu Liangyi: sales@jnmtforgedparts.com +86-13585067993 Jiangyin, Jiangsu, China.

Jiangsu Liangyi is an independent manufacturer; grade names indicate the material supplied.