39NiCrMo3 / 1.6510 Steel
39NiCrMo3 / 1.6510 Steel is a nickel-chrome-molybdenum steel which contains at least 0.85%Ni,0.7%Cr,0.2%Mo as strengthening alloy elements.It is suitable for different heat treatment and shows excellent hardenability, strength,toughness and good cold workability.After annealing,this material becomes machinable and adjusted for the mechanical cutting.pre-heat and post-weld stress relief are necessary for welding of this alloy,but welding in the hardened and tempered condition is not recommended.
39NiCrMo3 / 1.6510 Steel Supply Form & Size
Form of Supply | Size(mm) | Length(mm) |
Round bar | Φ6-Φ1,000 | 3,000-10,000 |
Square bar | 100×100-600×600 | 3,000-6,000 |
Plate/Sheet | Thickness :20-400 Width:80-1,000 | 2,000-6,000 |
Flat bar/Blcoks | Thickness :120-800 Width:120-1,500 | 2,000-6,000 |
39NiCrMo3 / 1.6510 Steel Surface Finish&Tolerance
Surface Finish | Black-Forged | Black-Rolled | Turned | Grinding | Polished | Peeled | Cold Drawn |
Tolerance | (0,+5mm) | (0,+1mm) | (0,+3mm) | Best h9 | Best h11 | Best H11 | Best H11 |
39NiCrMo3 / 1.6510 Steel Chemical Composition per EN 10083-3
GRADE | NUMBER | C | Si | Mn | P | S | Cr | Mo | Ni |
39NiCrMo3 | 1.6510 | 0.35-0.43 | ≤ 0.40 | 0.50-0.80 | ≤ 0.025 | ≤ 0.035 | 0.60-1.00 | 0.15-0.25 | 0.70-1.00 |
Germany | Russia | Italy | France |
36CrNiMo4/1.6511 | 36HNM | 39NiCrMo3 | 40NCD3 |
39NiCrMo3 / 1.6510 Steel Mechanical Property
Diameter d mm | ≤ 16 | 16-40 | 40-100 | 100-160 | 160-250 |
Yield Strength Mpa | ≥900 | ≥800 | ≥700 | ≥600 | ≥550 |
Tensile Strength Mpa | 1100-1300 | 1000-1200 | 900-1100 | 800-950 | 750-900 |
Elongation, % | ≥10 | ≥11 | ≥12 | ≥13 | ≥14 |
Reduction of area ,% | ≥45 | ≥50 | ≥55 | ≥60 | ≥60 |
impact,J | ≥35 | ≥40 | ≥45 | ≥45 | ≥45 |
Hardness,HB | 331-380 | 298-359 | 271-331 | 240-286 | 225-271 |
39NiCrMo3 / 1.6510 Steel Forging
Forging AISI 9840 steel between 1100℃-11500℃,and reheat the steel once temperature below 950℃.AISI 9840 has good forging characteristics,but this material is easy to crack when cooling improperly,Cooling in sand or in the furnace after forging is recommended.
39NiCrMo3 / 1.6510 Steel Heat Treatment
- Normalizing:850℃-880℃,Cool in air
- Soft Annealing:650℃-700℃,Cool in furnace
- Full Annealing:830℃-850℃,Cool in furnace,235HB max
- Hardening:830℃-865℃,water or oil quench
- Tempering:540°C – 680°C, cool in still air
39NiCrMo3 / 1.6510 Steel Machinability
This material may be readily machined, preferably from a coarse pearlitic structure.
39NiCrMo3 / 1.6510 Steel Application
This alloy is suitable for production of highly stressed components of large cross section for aircraft, automotive and general engineering applications, such as forged propeller shafts, connecting rods, gear shafts, crankshafts and landing gear components.
Page Contents
- 39NiCrMo3 / 1.6510 Steel Supply Form & Size
- 39NiCrMo3 / 1.6510 Steel Surface Finish&Tolerance
- 39NiCrMo3 / 1.6510 Steel Chemical Composition per EN 10083-3
- 39NiCrMo3 / 1.6510 Steel Mechanical Property
- 39NiCrMo3 / 1.6510 Steel Forging
- 39NiCrMo3 / 1.6510 Steel Heat Treatment
- 39NiCrMo3 / 1.6510 Steel Machinability
- 39NiCrMo3 / 1.6510 Steel Application