AISI 4140 / EN 19 Steel

Steel Bar, Steel Plate, Flats Supplier, Stockist and Exporter. AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.

Applications of AISI 4140 / EN 19 steel

ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades.

Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.

USA

ASTM
A29

4140

German

DIN
17200

1.7225/42crmo4

Japan

JIS
G4105

SCM440

British

BS
970

42CrMo4

China

GB/T
3077

42CrMo

Australia

AS
1444

4140

Grade C Mn P S Si Ni Cr Mo
4140 0.38 - 0.43 0.75 - 1.00 0.035 0.040 0.15 - 0.35 - 0.8 - 1.10 0.15 - 0.25
42CrMo4/1.7224 0.38 - 0.45 0.6 - 0.9 0.035 0.035 0.4 - 0.9 - 1.2 0.15 - 0.30
SCM440 0.38 - 0.43 0.60 - 0.85 0.03 0.03 0.15 - 0.35 - 0.9 - 1.2 0.15 - 0.30