Alloy Steel 50hf 1.8159 51CRV4 6150 A387 42cr Spring Steel Round Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Machined
• Model NO.: Round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel, Die Material
• 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 parts for general mechanical engendering, axles, shafts, automotive and gear parts, crankshafts, connecting-rods of engines; surface hardened for parts with high strength cores

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	V	W	Ti	Cu	Inne
0,47 - 0,55	0,70 - 1,10	Max 0,40	Max 0,025	Max 0,025	0,90 - 1,20	-	-	0,10 - 0,25	-	-	-	-

MECHANICAL PROPERTIES:

Mechanical properties of a product with the 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		%		≥ 9
Reduction of area		Z		%		≥ 40
Impact energy		KV		J		≥ 30
Effect of the cross-section on mechanical properties
Diameter d, mm Thickness of the flat bar t, mm	16 - 40 8 - 20		40 - 100 20 - 60		100 - 160 60 - 100		160 - 250 100 - 160
Rm, MPa	1000 - 1200		900 - 1100		850 - 1000		800 - 950
Re (Rp0,2), MPa	≥ 800		≥ 700		≥ 650		≥ 600
A, %	≥ 10		≥ 12		≥ 13		≥ 13
Z, %	≥ 45		≥ 50		≥ 50		≥ 50
KV, J	≥ 30		≥ 30		≥ 30		≥ 30

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	(1050 - 850)
	Rolling		+	(1180 - 850)
Treatment	Heat treatment	Quenching	+	820-870/w,o
		Tempering	+	540 - 680
	Precipitation hardening	Supersaturation	-	-
		Ageing	-	-
	Annealing	Normalising	+	(850 - 880)
		Soft annealing	+	(640 - 680)
Thermochemical treatment	Carburising		-	-
	Other		-	-

INTERNATIONAL STEEL GRADES:

ISO		European Union		Russia
51CrV4	ISO 683-1 1987	51CrV4	EN 10083-1 1996	~ 50ChFA	GOST 14959 1979
US		Japan		China
~6150H	ASTM A 304-95	SUP 10	JIS G 4801 1984	50CrVA	GB 8162-87