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

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Black or as Required
• Model NO.: Round bar
• 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:

Ideal for structural constructions that bear heavy loads and require exceptional durability, such as cranes, bridges, buildings, tankers, water tanks, and floodgates. Designed to perform optimally both at room temperature and in cooler conditions.

TECHNOLOGICAL INFORMATION:

Our expert manufacturers carefully determine the type and concentration of alloying elements to meet stringent property requirements. Supplied as toughened semi-finished products, they eliminate the need for heat treatment at the buyer's facility. Post-welding stress relief is recommended under controlled conditions to maintain the steel's superior mechanical properties.

SEMI-FINISHED PRODUCTS:

Our expert manufacturers carefully determine the type and concentration of alloying elements to meet stringent property requirements. Supplied as toughened semi-finished products, they eliminate the need for heat treatment at the buyer's facility. Post-welding stress relief is recommended under controlled conditions to maintain the steel's superior mechanical properties.

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