1.6511 36CrNiMo4 36hnm AISI 4340 En24 Sncm439 Alloy Steel Round Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Model NO.: Round bar
• Application: Tool Steel Bar
• Length: 2500-5500mm
• Transport Package: N/M
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7228400000
• Production Capacity: 5000ton/Month

Product Description

APPLICATION:

Steel susceptible to very loaded shafts, crankshafts, connecting-rods, pump and press, control parts, steam turbine shafts and rings.

TECHNOLOGICAL INFORMATION:

After soft annealing steel becomes machinable ( by improved shearability) and adjusted for the mechanical cutting.

SEMI-FINISHED PRODUCTS:

After soft annealing steel becomes machinable ( by improved shearability) and adjusted for the mechanical cutting.

CHEMICAL COMPOSITION:

C	Mn	Si	P	S	Cr	Ni	Mo	W	V	Ti	Cu	Inne
0,32- 0,4	0,5 -0,8	Max 0,40	MAX 0,035	MAX 0,035	0,9-1,2	0,9- 1,2	0,15-0,3	-	-	-	-	-

MECHANICAL PROPERTIES:

Mechanical properties of a product with diameter d ≤ 16 mm
Property		Symbol		Unit		After heat treatment
Ultimate tensile strength		Rm		MPa		1100-1300
Yield stress		Re (Rp0.2)		MPa		≥ 900
Elongation		A		%		≥ 10
Reduction of area		Z		%		≥ 45
Impact energy		KV		J		≥ 35
Effect of the cross-section on mechanical properties
Diameter d, mm Flat product thickness t, mm	16-40 8-20		40-100 20-60		100-160 60-100		160-250 100-160
Rm, MPa	1000-1200		900-1100		800-950		750-900
Re (Rp0.2), MPa	≥ 800		≥ 700		≥ 600		≥ 550
A, %	≥ 11		≥ 12		≥ 13		≥ 14
Z, %	≥ 50		≥ 55		≥ 60		≥ 60
KV, J	≥ 40		≥ 45		≥ 45		≥ 45

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	(1050 - 850)
	Rolling		+	(1050 - 850)
Treatment	Heat treatment	Quenching	+	820-850/w,o
		Tempering	+	540 - 680
	Precipitation strenghtening	Supersaturation	-	-
		Ageing	-	-
	Annealing	Normalising	+	(850 - 880)
		Softening	+	(650 - 700)
Thermochemical treatment	Carburising		-	-
	Other		-	-

INTERNATIONAL STEEL GRADES:

ISO		European Union		Russia
36CrNiMo4	ISO 683-1 1987	36CrNiMo4	EN 10250-3 2001	~40ChGNM	GOST 4543 1971
US		Japan		China
~9840	ASTM A 519-94	-	-	-	-