1.6582 34CrNiMo6 Alloy Steel

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Heat Treatment
Cold Processing
Hot Working

1.6582 34CrNiMo6 Alloy Steel

1.6582 34CrNiMo6 Alloy Steel

1.6582 34CrNiMo6 Alloy Steel

EN 34CrNiMo6 Steel is an important alloy engineering steel grade as per BS EN 10083-3:2006. 34CrNim06 steel has high strength, high toughness and good hardenability. EN / DIN 34CrNiMo6 alloy steel has the stability of resistance to overheating, but the white sensitivity of 34CrNiM06 is high. It also has the temper brittleness, so the weldability of 34CrNiMo6 material is poor. The steel 34CrNiMo6 needs the high temperature preheating before welding in order to eliminate the stress after welding processing.

Supplying Size:

Rolled: Diameter 40-200mm

Forged: Diameter 80-600mm

EN 34CrNiMo6 Steel Standards And Equivalents

BS EN 10083 -3: 2006 34CrNiMo6 / 1.6582 ASTM A29: 2004 4337
BS EN 10250 – 3: 2000

EN/DIN 34CrNiMo6 Steel Chemical Composition Properties

BS EN 10083 – 3:2006 34CrNiMo6
/1.6582
C Mn Si P S Cr Mo Ni
0.30-0.38 0.5-0.8 0.40 max 0.025 max 0.035 max 1.3-1.7 0.15-0.30 1.3-1.7
BS EN 10250-3:2000 C Mn Si P S Cr Mo Ni
0.30-0.38 0.5-0.8 0.40 max 0.035 max 0.035 max 1.3-1.7 0.15-0.30 1.3-1.7
ASTM A29: 2004 4337 C Mn Si P S Cr Mo Ni
0.30-0.40 0.6-0.8 0.20-0.35 0.035 max 0.040 max 0.70-0.90 0.20-0.30 1.65-2.00

Mechanical Properties of EN/DIN 34CrNiM06 / 1.6582 Alloy Steel

Properties < 16 >16 – 40 >40 – 100 >100 – 160 >160 – 250
Thickness t [mm] < 8 8<t<20 20<t<60 60<t<100 100<t<160
Yield strength Re [N/mm²] min. 1000 min. 900 min. 800 min. 700 min. 600
Tensile strength Rm [N/mm2] 1200 – 1400 1100 – 1300 1000 – 1200 900 – 1100 800 – 950
Elongation A [%] min. 9 min. 10 min. 11 min. 12 min. 13
Reduction of area Z [%] min. 40 min. 45 min. 50 min. 55 min. 55
Toughness CVN [J] min. 35 min. 45 min. 45 min. 45 min. 45

Heat Treatment of 34CrNiMo6 Engineering Steel

Quenched and Tempered (Q+T) of 34CrNiMo6 Steel

Heat 34CrNiMo6 round steel slowly to the temperature of 850°C;

Soak at this hardening temperature quench in oil;

Temper as soon as 34CrNiMo6 steels reach room temperature.

Heat uniformly to the suitable temperature;

Withdraw from the furnace and cool in the air.

The usual tempering temperature is 600°C which depending on the actual requirements.

Forging of DIN 34CrNiMo6 / 1.6582 Steel

Hot forming temperature: 1100-900oC.

7.Machinability of Steel 34CrNiMo6

Machining is best done with this 1.6582 alloy steel in the annealed or normalized and tempered condition. It can be machined by all conventional methods.

8.Welding The alloy materials can be fusion or resistance welded. Preheat and post heat weld procedures should be followed when welding this alloy by established methods.

EN DIN 34CrNiMo6 steel is used to make tools which demands good plasticity and high strength. It is usually selected to make the big size and important parts, such as heavy machinery axle,turbine shaft blade, high load of transmission parts, fasteners, crank shafts, gears, as well as heavily loaded parts for motor construction etc.Steel is reliable to supply engineering 34CrNiMo6 steels / 1.6582 engineering alloy steels. Please tell us your detailed requirements and have the best offer soon.

 

What is EN10083 1.6582 34CrNiMo6 Hardening Steel ?

Bright Bars are of 2 types-1. Cold Drawn and Peeled 2. Turned.In a Cold Drawn Bright Bar the Hot Rolled Bars are pickled and drawn through a Tungsten Carbide Die as Cold Rolled, no heating is required, that is why it is called a Cold Drawn Bright Bar.Secondly in Peeled / Turned Bright Bar the Hot Rolled Bar is fed into a Turning machine and the surface is turned / removed to the required size of the Dia. This is also a Cold process, no heating is required. Bright Bars can be further Ground Finished for special applications. Bright Bars have a smooth and a Bright surface with Accurate Tolerance on the Dia. Accurate Tolerance means the tolerance of the Dia is very restricted i.e 0.10 mm approximatly depending on the size of the Dia and as per the customer’s specific requirement. These are the reasons why a Bright Bar enjoys advantages over a Hot Rolled Bar. Bright Bars can be used in automatic Machines for making Steelcomponents whereas a Hot Rolled Bar cannot be used.

 

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

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

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

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

Application:

High voltage bolts and nuts, crankshafts, camshafts, transmission axles, torsion bars, drive shafts, pump shafts, worm shafts, conveyor rollers, stems, pins, tie rods, clutch discs. Large-mass dies for hot stamping.1.6582 Steel is widely used in the aerospace industry for structural parts of flaps assembly, fuselage and landing gear, propeller plane axles.

Product Description:

1.6582 Steel is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength. A very popular, versatile steel. It can be heat-treated to produce a wide range of tensile strength in moderate sections.

Transformation temperatures

Temperature °C
MS 315
AC1 725
AC3 785

Heat treatment recommendations

Treatment Condition Temperature cycle Cooling/quenching
Hot forging +AR 880-1050oC In air
Soft annealing +A 650-700oC Slowly (15oC/h) until 600oC
Stress relieve annealing +SRA 450-650oC (appr. 50oC under tempering temperature) In air
Hardening +Q 820-850oC Quenching in oil
Tempering +T 540-680oC In air

Hardenability

Steel cleanliness

Micro inclusions  

 

 

Macro inclusions
Applied standard ASTM E45 Applied standard ISO 3763

(Blue fracture)

Sampling ASTM A295 Sampling Statistical testing on billets
Maximum

average

limits

A B C D Limits < 5 mm/dm2
Th He Th He Th He Th He
2.0 1.5 0.8 0.1 0 0 0.5  0.4

Steel cleanliness

Micro inclusions – Macro inclusions –
Applied standard DIN 50602  K1 Applied standard 10 M Hz UST

(Ovako internal standard)

Sampling Six random samples from final product dimension Sampling Statistical testing on billets
Limits The limit is dimension dependent. The average rating of six samples

should not exceed the limits given in the graph

Limits < 10 defects/dm3

> 0,2 mm FBH

 

Other properties (typical values)

Youngs module (GPa) Poisson´s ratio (-) Shear module (GPa) Density (kg/m3)
210 0.3 80 7800
 Average CTE 20-300°C (µm/m°K)  Specific heat capacity 50/100°C (J/kg°K)  Thermal conductivity Ambient temperature (W/m°K)  Electrical resistivityAmbient temperature (µΩm)
 12  460 – 480  40 – 45  0.20 – 0.25