Smooth Trademark Spring Steel Coil 2500-5500mm Specification 6-400mm Length

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: Round bar
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Black or as Required
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• 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:

Our Smooth Trademark Spring Steel Coil, with specifications ranging from 2500-5500mm and lengths of 6-400mm, is exquisitely engineered for the most demanding structural constructions. Ideal for cranes, bridges, buildings, tankers, water tanks, and floodgates, this steel proves its mettle under both room and reduced temperatures, ensuring reliable performance when it matters the most.

TECHNOLOGICAL INFORMATION:

The meticulous process by Huangshi Smooth Industry and Trade Co., Ltd involves selecting the optimal type and concentration of alloying elements to meet stringent property requirements. Delivered in a toughened state, our semi-finished products require no heat treatment at the buyer's facility. Post-welding stress relief is recommended to be conducted under specific conditions that maintain the steel's mechanical integrity.

SEMI-FINISHED PRODUCTS:

Our semi-finished steel products are crafted with precision, where the type and concentration of alloying elements are expertly chosen to meet the desired properties. These products come toughened, eliminating the need for further heat treatment on your premises. Stress relief after welding should be performed under conditions that preserve the mechanical properties of the steel.

CHEMICAL COMPOSITION:

C	Mn	Si	P	S	Cr	Ni	Cu	Mo	V	Nb	Ti	Zr	Al	N	B
Max 0,20	Max 1,70	Max 0,80	Max 0,020	Max 0,010	Max 1,50	Max 2,0	Max 0,50	Max 0,70	Max 0,12	Max 0,06	Max 0,05	Max 0,15	Max 0,015	Max 0,015	Max 0,005

MECHANICAL PROPERTIES:

Effect of the cross-section on mechanical properties
Thickness, mm	3-50		> 50-100		> 100-150
Yield point ReH (Rp0.2), MPa	≥ 690		≥ 650		≥ 630
Ultimate tensile strength Rm, MPa	770-940		760-930		710-900
Elongation A, %	≥ 14
Mechanical properties at the reduced temperature
Temperature, °C	-60	-40		-20		0
Impact energy, KV, J (longitudinal samples)	-	≥ 30		≥ 40		≥ 50
Impact energy, KV, J (transverse samples)	-	≥ 27		≥ 30		≥ 35

INTERNATIONAL STEEL GRADES:

ISO		European Union		Russia
~E 690-E	ISO 4950-3:1995	S690QL	EN 10137-2:1995	-	-
US		Japan		China
~A 514 (Q)	ASTM A 514-00	-	-	~Q 690 E	GB T 16270-96