1.6510 39NiCrMo3 Quenched and Tempered Steel

 

1. 1.6510 Description and Application

The 39nicrmo3 steel is suitable for different heat treatment and shows a good cold workability. Steel with high hardening capacity and good toughness, which allows to achieve optimum mechanical properties with dimensions up to approx. 80mm. Used on heavy-duty machinery parts, automotive accessories and other motor vehicles, including engine parts.

Our supply size :

Diameter : 80 to 600 mm ;

Length : 1000 to 9000 mm ;

 

Our capacity :

Delivery condition : Normalized, or Annealed, or Quenched and Tempered ;

Surface condition : Grounded, or Turned, or Polished

 

Our advantage :

1. High Quality, Reasonable Price

2. Over 40 Years Experience

3. ISO NQA Certificated Factory

4. Worldwide shipping

5. Emergency Orders and Fast Delivery

 

2. 1.6510 Application

The 39nicrmo3 steel is suited to 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.

3.All Grades Comparison

DIN	EN	ANFOR	AISI	GOST
1.651	39NiCrMo3	40NCD3	9840	39HNM

 

4.Quality Standard

EN 10083 Steels for quenching and tempering. Technical delivery conditions for alloy steels
ASTM A29 Standard Specification Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements

5. 1.6510 Chemical Composition(%)

C	Mn	Si	P	S	Cr	Ni	Mo
0.35-0.43	0.50-0.80	0.40 max	0.025 max	0.035 max	0.80-1.10	0.70-1.00	0.15-0.25

 

6.Mechanical Properties(T=20°C if not differently stated)

Process	Diameter(mm)	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A5 (%)	Area Reduction Ratio C (%)	Impact Value Kv (J) Room Temperature	Hardness (HB)
Hot Rolled+Quenched+Tempered	0-16	980-1180	785 min	11 min	40 min	/	295-354
Hot Rolled+Quenched+Tempered	16-40	930-1130	735 min	11 min	40 min	35 min	278-339
Hot Rolled+Quenched+Tempered	40-100	880-1080	735 min	12 min	45 min	40 min	263-327
Hot Rolled+Quenched+Tempered	100-160	830-980	635 min	12 min	50 min	40 min	249-295
Hot Rolled+Quenched+Tempered	160-250	740-880	540 min	13 min	50 min	40 min	224-263
Hot Forged+Quenched+Tempered	250-500	655-805	490 min	15 min	/	30 min	201-241

 

7.HEAT TREATMENT:

Annealing: Austenitize at 1525ºF (830ºC) and slow cool from 1280 to 1200ºF (iso anneal) to give coarse pearlite structure for optimum machinability.

Normalizing: At 1600ºF (870ºC) followed by air cool.

Hardening: from 1525-1575ºF (830-860ºC) and oil quench for thin, intricate shapes, water quench for large, simple shapes.

Tempering: from 1000-1250ºF(540-680ºC) as per required properties.

 

8.Machinability:

The 39nicrmo3 steel may be readily machined, preferably from a coarse pearlitic structure.

9.Weldability:

Pre-heat and post-weld stress relief are recommended for welding of this alloy. Welding should not be carried out in the hardened and tempered condition.

10.Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.

In the 38HNM grade the company provides:

Hot-rolled bars and flat bars 38HNM, 39NiCrMo3, 1.6510

Forged bars and forgings 38HNM, 39NiCrMo3, 1.6510

Drawn and peeled bars 38HNM, 39NiCrMo3, 1.6510

 

List of other designations and equivalents of steel:

39NICRMO4, 1.6510, 39CHNM, 39KHNM, 39ХНМ, 38NICRMO4KB, 39NICRMOS3, 39NICRMOS3HH, 39NICRMO3PB, 38 NICRMO 4 KB, F-128, A-128, NCMO4, 38NCD4, 38 NCD 4, Č.5430, Č5430.

 

We also supply :

4130 , 4130 p+x , 4140 , 4330v mod , 4340 , 4145h mod , 4317 

1.8509 , 1.6523 , 1.7707 , 1.6657 , 1.6587 , 1.6582 , 1.6773 

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