AISI 4140 / DIN 42CRMO4 / EN19 Steel

Country USA German British Japan China Australia
Standard ASTM A29 DIN 17200 BS 970 JIS G4105 GB/T 3077 AS1444
Grades 4140 1.7225 / 42CrMo4 42CrMo4 SCM440 42CrMo 4140

 

Standard Grade C Mn P S Si Cr Mo
ASTM A29 4140 0.38-0.43 0.75-1.00 0.035 max 0.040 max 0.15-0.35 0.80-0.90 0.15-0.25
EN 10250 42CrMo4 / 1.7224 0.38-0.45 0.60-0.90 0.035 max 0.035 max 0.40 max 0.90-1.2 0.15-0.30
JIS G4103 SCM440 0.38-0.43 0.60-0.85 0.030 max 0.030 max 0.15-0.35 0.90-1.2 0.15-0.30
BS 970 EN 19 / 708M40 0.35-0.45 0.50-0.80 0.035 max 0.035 max 0.10-0.35 0.90-1.4 0.20-0.40

AISI 4140 / EN19 Steel is a 1% chromium-molybdenum medium harden capability fundamental cause excessive tensile metal. It is pre-hardened and tempered and can be additional surface hardened by flame or induction hardening and by means of nitriding.

 

STEEL PROPERTIES

  • AISI 4140 alloy steel is a 1% chromium-molybdenum medium hardenability.
  • High tensile steel is generally provide hardened and tempered in the tensile range of 850-1000 Mpa (condition).
  • 4140 steel is currently out there with improved machinability.
  • Greatly increases feeds or speeds.
  • Extending tool life by not adversely affecting mechanical properties.

 

APPLICATION

ASTM alloy 4140 steel bar, flat or plate material can be utilized for as wide variety of applications where greater toughness and wear resistance is required over lower carbon grades. The applications of 4140 steel includes components, adapters, strippers, holder blocks, mould bases, ejectors, backup and support tooling, fixtures, jigs, moulds, cams, drill collars, axle shafts, bolts, crank shafts, 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 and rolls, ejector pins, forks, gears, guide rods, hydraulic shafts and 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.

 

PHYSICAL PROPERTIES

Thermal Conductivity at °C W / (m*K)
20 42
350 42.2
700 42.4

 

HEAT TREATMENT

Soft Annealing °C 680-780
Cooling Furnace
Hardness HB max. 241
Stress-relief Annealing °C 550-600

 

SIZE RANGE

ROUNDS – 6  to  600 MM DIA

SQUARES – 32 to 155 MM

FLATS -THICKNESS -15  to 105 MM  | WIDTH – 40 to 405 MM

PIPE SIZES ALSO AVAILABLE FOR BOREWELL DTH HAMMER PARTS.

 

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