AISI 9840 SAE 9840 UNS G98400 Forgings for Mining, Oil Gas, Power Gear Shafts, Crankshafts, Pinions Rolled Rings Jiangsu Liangyi

Product Description

Jiangsu Liangyi is an ISO 9001:2015-certified alloy-steel forging manufacturer in China supplying AISI 9840 / SAE 9840 / UNS G98400 (AMS 6342) open-die forgings, seamless rolled rings and gear shafts to mining, oil & gas, power and machinery projects in India and worldwide.

Why AISI 9840 / G98400 for Indian mining, power and machinery projects

AISI 9840 is a Ni-Cr-Mo through-hardening alloy steel from the 4340 family with deep hardenability, toughness and fatigue resistance at competitive cost. For India's mining mills, oil & gas, power-generation and general-machinery sectors, G98400 suits heavy-duty gear and pinion shafts, crankshafts, couplings and rolled rings, quenched and tempered to the required strength.

Documented capability

Mining: heavy gear/pinion shafts, gear rings, slewing bearing races, couplings.

Oil & gas: drive shafts, couplings, high-load components.

Power: turbine/generator shafts, couplings, rings.

Machinery: crankshafts, axles, spindles, gear wheels.

Product range for Indian buyers

Round/square/flat/rectangular bars; seamless rolled rings, gear rings, slewing races, flange rings; gear/pinion/crank shafts, axles, spindles, couplings; hubs, housings, sleeves, hollow bars; discs, blocks.

Material data

Chemistry (typical, wt%): C 0.380.43, Mn 0.700.90, Ni 0.851.15, Cr 0.700.90, Mo 0.200.30. Heat treatment: harden 830860 C oil quench, temper 540650 C; Q&T tensile 8501,000 MPa by section. Nearest EN grade 36CrNiMo4 / 1.6511 (comparable, not identical).

Standards & quality

Manufactured to SAE/AISI 9840, ASTM A29, AMS 6342; EAF + VD melting; 100% UT; EN 10204-3.1 / 3.2 MTRs. AISI 9840, SAE 9840, UNS G98400 and AMS 6342 are the same grade.

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.