39NiCrMo3 Steel for Quenching and Tempering 1.6510 38NCD4

Application

39NiCrMo3 Steel with high hardening capacity and good toughness, which allows to achieve optimum mechanical properties with dimensions up to approx. 80mm. 39NiCrMo3 Steel used on heavy-duty machinery parts, automotive accessories, other motor vehicles, engine parts, shafts, etc.

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Quality Standard

-DIN EN 10083-3 Steel for quenching and tempering alloy steels.

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Steel Grades

EN                                         DIN                                ANFOR

39NiCrMo3                       1.6510                            38NCD4

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Chemical Composition(%)

C	Si	Mn	P	S	Cr	Mo	Ni
0.35-0.43	0.40 max	0.50-0.80	0.025 max	0.025 max	0.60-1.00	0.15-0.25	0.70-1.00

Mechanical Properties

Heat treatment	Diameter (mm)	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation % in 2″ (%)	Reduction Of Area (%)	Impact Test (J)
Q+T	16 max	980-1180	785 min	11 min	40 min	/
Q+T	16-40	930-1130	735 min	11 min	40 min	35 min
Q+T	40-100	880-1080	685 min	12 min	45 min	40 min
Q+T	100-160	830-980	635 min	12 min	50 min	40 min
Q+T	160-250	740-880	540 min	13 min	50 min	40 min

Heat treatment

Process	Cooling type	Temperature
Normalizing annealing	In calm air	830 – 860℃
Softening annealing	Slow	650 – 700℃
Hardening	In water or in oil	830 – 850℃
Tempering min. 1h	In air	550 – 650℃

Capacity

1,500 ton per month.

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Test

Chemical analysis, Mechnical analysis, Ultrasonic testing, Metallographic, Surface quality and dimension report.

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Package

Each bundle of max 3,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.

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Mill’s Test Certificate

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

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