39NCD3 40NCD3

We are professional 39NCD3 40NCD3 40 NCD 3 Forged forging Steel Round Bars Rods Square rectangular rectangle Flat Hex Bars,39NCD3 40NCD3 Forged Forging Steel Hollow Bars Forged Forging Sleeves Bushes Bushing Pipes Piping tube tubings barrels Casing Cases Shells cylinders hubs housings,39NCD3 40NCD3 Seamless Rolled Steel Rings,39NCD3 40NCD3 Forged Forging Steel rings,39NCD3 40NCD3 Forged Forging Steel Blocks Discs Disks Plates,39NCD3 40NCD3 Forged Forging Steel Gear Shafts Pinion Shafts Spindles,and other 39NCD3 40NCD3 forged forging parts Forged Products forged forging pieces forged forging steel components materials  from china

Soft Annealing of 39NCD3 40NCD3 40 NCD 3
Heat to 650-700^oC, cool slowly. This will produce a maximum Brinell hardness of 248.

Normalizing of 39NCD3 40NCD3 40 NCD 3
Temperature: 850-880^oC.

Hardening
Harden from a temperature of 820-860^oC followed by water or oil quenching.

Tempering
Tempering temperature: 540-680^oC.

Mechanical Properties in Hardening and Tempering Condition

Diameter (mm)	0.2 % proof stress (N/mm2)	Tensile strength (N/mm2)	Elongation (%)	Reduction of area (%)	Notch impact energy (J)
<16	900	1100-1300	10	45	40
17-40	800	1000-1200	11	50	45
41-100	700	900-1100	12	55	50
101-160	600	800-950	13	60	50
161-250	550	750-900	14	60	50

Forging of 39NCD3 40NCD3 40 NCD 3
Hot forming temperature: 1050-850^oC. 

Machinability of 39NCD3 40NCD3 40 NCD 3
Machining is best done with this alloy in the annealed or normalized and tempered condition. It can be machined by all conventional methods.

Corrosion Resistance of 39NCD3 40NCD3 40 NCD 3
This is a low alloy steel and not a corrosion resistant alloy. Protective coating should be used.

Welding of 39NCD3 40NCD3 40 NCD 3
The alloy can be fusion or resistance welded. Preheat and post heat weld procedures should be followed when welding this alloy by established methods.

Cold working 
39NCD3 40NCD3 40 NCD 3 alloy may be cold worked, in the annealed condition, by conventional methods and tooling. It has good ductility.