34CRNIMO6+QT|DIN 1.6582 QUALITY ALLOY STEEL

34CrNiMo6/DIN 1.6582 Alloy Steel manufacturers and suppliers,supplied with round rods,square/flat bars,rollers,shafts,blocks and forging pieces.

34CrNiMo6/1.6582 Alloy Steel is defined as Engineering steel which contains low Cr-Ni-Mo as strength elements as per EN10083 Standard.This material has high strength,toughness and good hardenability after quenched and tempered,but also has poor weldability,high sensitivity on hydrogen flaking and temper brittleness.34CrNiMo6/1.6582 Alloy Steel is widely used in heavy duty Shafts, Gears, Axles, Spindles, Couplings, Pins etc.

34CRNIMO6+QT|DIN 1.6582 QUALITY ALLOY STEEL

1.Chemical Composition

Grade C Mn P S Si Ni Cr Mo
34CrNiMo6/1.6582 0.30-0.38 0.50-0.80 ≤ 0.025 ≤ 0.035 ≤ 0.04 1.3-1.7 1.3-1.7 0.15-0.3

2.Related Specifications

ASTM:4340
BS:817M40/EN24
JIS:SNCM449
GB:40CrNiMo

3.Heat Treatment

  • Normalizing:860℃-880℃,Cool in air
  • Soft Annealing:650℃-680℃,Cool in furnace,max. 248 HB
  • Full Annealing:800-850℃,Cool in furnace
  • Hardening:830 – 860°C,oil quench is recommended
  • Tempering:540°C – 660°C, cool in still air

34CrNiMo6 Normalizing Diagram

34CrNiMo6 Normalizing Diagram

34CrNiMo6 Annealing Diagram

34CrNiMo6 Annealing Diagram

4.Mechanical Property with Quenched and Tempered condition as per EN10083

Size,mm Tensile,Mpa Yield,Mpa Elongation,% Reduction,% Charpy Impact,J
≤16 1200-1400 ≥1000 ≥9 ≥40 -
16-40 1100-1300 ≥900 ≥10 ≥45 ≥45
40-100 1000-1200 ≥800 ≥11 ≥50 ≥45
100-160 900-1100 ≥700 ≥12 ≥55 ≥45
160-250 800-950 ≥600 ≥13 ≥55 ≥45

5.Mechanical Property with Quenched and Tempered condition as per EN10250

Thickness,mm Tensile,Mpa Yield,Mpa Elongation,% Charpy Impact,J
≤160 ≥800 ≥600 L:≥13
T:≥9 		L:≥45
T:≥22
160-330 ≥750 ≥540 L:≥14
T:≥10 		L:≥45
T:≥22
330-660 ≥700 ≥490 L:≥15
T:≥11 		L:≥40
T:≥20

6.Mechanical Property of Testing Data for Quenched and Tempered condition

Size mm Tensile,Mpa
 Yield,Mpa
 Elongation,%
 Reduction,%
 Charpy Impact,J Hardness,HB
Φ200 925 740 18 61.5 104/108/118 302-323
Φ280 925 740 18 63.5 106/103/101 286-309
Φ350 905 725 20 64.5 112/110/111 288-312
Φ430 825 650 17.4 54.5 89/105/113 270-275
Φ575 785 590 20 50 97/91/76 270-272

7.Supply Size & Condition

  • Round Bars:  Dia.80 – 1,000mm as Forged
  • Flat / Square Bars:  Thickness Max.800mm
  • Shafts, Rollers, Blocks:  Customized or According to Drawing
  • Rolled Round Bars:  Dia.16 – 250mm with UT Assurance

Heat treatment:Quenched and Tempered (+QT), Normalizing (+N), Annealing (+A)
Surface finish:Black / Rough turned / Peeled

 

RFQ 34CRNIMO6 STEEL