34CrMo4 alloy structural steel stockholders and suppliers from china. OTAI SPECIAL STEEL Supply in DIN 34CrMo4 steel round bar, plate, sheet, square bar, flat bar, pipe .We have large stock in warehouse. 34CrMo4 main Alloy composition is Cr and Mo.

34CrMo4 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality low carbon,Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 18-22 HRc. Annealing delivery hardenss less than 250HB. With a lower carbon content range, So have good weldability.

Related Specifications ASTM A29/A29M DIN EN 10083/3 DIN G4053 DIN/T 3077

Form of Supply

34CrMo4 Alloy steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar and steel square block. steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. 34CrMo4 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances

steel bar

Chemical composition

C(％) 0.30～0.37 Si(％) ≤0.40 Mn(％) 0.60～0.90 P(％) ≤0.035
S(％) ≤0.035 Cr(％) 0.90～1.20 Mo(%) 0.15～0.30

Equivalent Of 34CrMo4 alloy Structure Steel

USA Germany China Japan France England Italy Poland ISO Austria Sweden Spain
ASTM/AISI/UNS/SAE DIN,WNr GB JIS AFNOR BS UNI PN ISO ONORM SS UNE
4135 / G41350  34CrMo4 / 1.7220 35CrMo SCM435  42CD4 708A37 34CrMo4 2234

Heat treatment Related

  • Annealing of 34CrMo4 Alloy structural steel

heated to 870 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. The 34CrMo4 alloy steel will get MAX 250 HB

  • Hardening of DIN Alloy structural steel 34CrMo4

First quenching heated slowly to 880°C, Then after adequate soaking at this temperature quench in oil or water. Temper as soon as tools reach room temperature. Second quenching heat to 780-820°C， then quenching in oil or water.

  • Tempering of 34CrMo4 Alloy structural steel

Heat to 205-649°C, then cool in water or oil. normal delivery hardness 18-22 HRC.

  • Forging of Alloy Steel 34CrMo4

DIN 34CrMo4 alloy steel is forged at 926 to 1205°C (1700 to 2200°F)

Mechanical Properties of 34CrMo4 Alloy Steel

The mechanical properties of annealed DIN 34CrMo4 alloy steel are outlined in the table below

Tensile strength Yield strength Elongation Reduction of area Poisson’s ratio Impact absorbing energy
σb/MPa σs/MPa δ5(％) ψ(％) AKV/J
1100-1300 900Min 10 min 40 min 0.27-0.30 35 Min

Applications of 34CrMo4

DIN 34CrMo4 steel Strength, high hardenability, toughness, and quenching small deformation, high strength and creep rupture strength at high temperatures. Requirements for the manufacture of higher intensity than the 35CrMo steel and tempered forging greater cross-section, such as a large locomotive traction gears, supercharger drive gear, pressure vessels, gear, rear axle, greatly affected by load and spring clip link It can also be used to 2000m deep oil drill pipe joints and fishing tools, and can be used bending machine mold, etc.

Regular size and Tolerance of Alloy steel 34CrMo4

Steel round bar: Diameter Ø 5mm – 3000mm

Steel plate: Thickness 5mm – 3000mm x Width 100mm – 3500mm

Steel Hexagonal bar: Hex 5mm – 105mm

Others 34CrMo4 have not specified size, pls contact our experienced sales team.

Processing of 34CrMo4 Steel

DIN 34CrMo4 alloy steel round bar and flat sections can be cut to your required sizes. 34CrMo4 alloy steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. DIN 34CrMo4 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Contact our experienced sales team to help you with your 34CrMo4 alloy steel questionsadn enquiry by Email or Telphone. The questions will be reply in 24 hours.

OTAI SPECIAL STEEL CO., LTD

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