Length 2500-5500mm Steel Bar Specification

• Type: Coil
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Machined
• Model NO.: Steel Strip
• 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	Si	Mn	P	S	Cr	Mo	Ni	B
0,62-0,70	0,17-0,37	0,90-1,2	-	-	Max. 0,25	-	-	-

MECHANICAL PROPERTIES:

	Unit	Value
Hardness after thermal treatment	HB	Max. 241
Quenching in oil	Temperature	830 °C
Tempering	Temperature	470 °C
Yield stress	Re (Rp0.2), MPa	Min. 785
Ultimate tensile strength	Rm MPa	Min. 980
Elongation	A, %	Min. 8
Reduction of area	Z, %	Min. 30
Impact energy	KV, J	-
Physical properties
Property	Unit	Value
Density, ρ	g·cm^-3	7.85

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes			Possible application	Temperature, °C
Hot forming	Forging		+	800 - 1180
	Rolling		+	850 - 1180
Heat treatment	Annealing	Normalising	+	810 - 830
		Soft annealing	+	640 - 680
	Heat treatment after carburising^1)	Quenching	+	810 - 830
		Tempering	+	640 - 680

APPLICATION:

Steel susceptible to steel for small cross-section springs and leaf springs, spring with low hardenabilitySpring
steel, commonly referred to as annealed spring steel, is known as a "general use" steel because of its many
uses and applications. Mead Metals offers a wide variety of spring steel products, including various grades,
sizes, gauges, and more. Spring steel has many unique properties that make it ideal for producing springs
and other similar components.