Alloy Steel Rod 50HS/1.5026/56si7 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

CHEMICAL COMPOSITION:

C	Mn	Si	P	S	Cr	Ni	Mo	W	V	Ti	Cu	Inne
0,52 - 0,60	0,60 - 0,90	1,60 - 2,00	Max 0,025	Max 0,025	0,9-1,2	Max 0,40	Max 0,10	-	-	-	-	-

MECHANICAL PROPERTIES:

Mechanical properties after the process of annealing or annealing and rolling for the product with thickness of 0.3 mm ≤ t < 3 mm
Property			Symbol			Unit		After heat treatment
Ultimate tensile strength			Rm			MPa		≤ 600
Yield stress			Re (Rp0,2)			MPa		≥ 740
Elongation			A			%		≥ 12
Percentage reduction of area			Z			%		-
Hardness			HV			HV		≤ 230
Mechanical properties after the process of cold rolling for the product thickness of 0.3 mm ≤ t < 3 mm
Property			Symbol			Unit		Value
Tensile strength			Rm			MPa		-
Hardness			HV			HV		-
Mechanical properties after the process of toughening for the product thickness of 0.3 mm ≤ t < 3 mm
Property			Symbol			Unit		Value
Ultimate tensile strength			Rm			MPa		1200 - 1700
Hardness			HV			HV		370-520
Effect of the cross-section on mechanical properties after the process of toughening
Thickness, mm	0.3 ≤ 0.5	0.5 ≤ 0.75		0.75 ≤ 1	1 ≤ 1.5		1.5 ≤ 2		2 ≤ 3
Hardness HV	485-535	465-515		455-505	445-495		425-475		415-465

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		-	-
	Rolling		+	(900 - 830)
Treatment	Heat treatment	Quenching	+	840-870/w,o
		Tempering	+	430 - 500
	Precipitation strengthening	Supersaturation	-	-
		Ageing	-	-
	Annealing	Normalising	+	(850 - 880)
		Soft annealing	+	(640 - 680)
Thermochemical treatment	Carburising		-	-
	Other		-	-

INTERNATIONAL STEEL GRADES:

ISO		European Union		Russia
~59Si7	ISO 683-14: 1992	56Si7	EN 10132-4: 2000	~ 55S2	GOST 14959 1979
US		Japan		China
~9255	ASTM A 29-99	-	-	~55Si2Mn	GB 1222-84

 

SPRING STEEL

NORM: PN/EN 10132-4:2002U

APPLICATION:

Steel susceptible to different types of springs ( up to 6 mm ) as leaf springs, helical springs and coil springs etc.