Astm A572 Gr55 Prime Hot Rolled Alloy Steel A572 Grade 55 HSLA Steel

Description: A572 Gr55 HSLA steel is a high-strength low-alloy niobium-vanadium structural steel plate. A572 Gr.55 and A572 Gr.380 are the same grade. ASTM A572GR55|A572 Grade 55 steel is a fine grain structural steel, thermomechanically rolled steel....

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A572 Gr.55 Steel Description

A572 Gr55 HSLA steel is a high-strength low-alloy niobium-vanadium structural steel plate. A572 Gr.55 and A572 Gr.380 are the same grade. The implementation standard is ASTM A572/A572M. It is widely used in engineering structures, such as building steel structures. , construction machinery, mining and mountainous machinery, trucks, bridges, pressure vessels, etc. Especially for construction and engineering machinery parts that require good weldability and toughness. A572 Gr55 high-strength low-alloy steel delivery status: hot rolling, controlled rolling, normalizing, etc. Technical requirements: Flaw detection, Z15Z35 thickness direction performance requirements, high strength and high toughness requirements and other steel plates

ASTM A572 carbon and low alloy steel is mainly used in the manufacture of transmission line steel pipe towers, communication steel pipe towers, street light poles, landscaping trees and substation structures. Compared with the national standard Q345B, Q420B and Q460C steel plates, this steel has the characteristics of low carbon and low silicon, high strength and high toughness. Through the control of trace elements, the adhesion of the galvanized zinc layer is enhanced, and it will not turn black after long-term use. It fully guarantees the quality of hot-dip galvanizing, and can carry out various surface special processing, such as: hot-dip galvanizing anodizing, environmental protection spraying, etc.

ASTM A572GR55|A572 Grade 55 steel is a fine grain structural steel, thermomechanically rolled steel. Can be used in a variety of structural applications. This specification is made in grades 42, 50, 55, 60 and 65, which represent yield strength.

Heat treated : 1377°C - 1639°C

A572 Gr.55 Steel Datasheet

Product Name	ASTM A572GR55 \| A572 Grade 55 Carbon HSLA Steel
Width	0.6m-3m or as required
Thickness	0.1mm-300mm or as required
Technique	Hot/Cold rolled
Surface Treatment	Clean, blasting and painting according to customer requirement
Thickness tolerance	±0.15mm
MOQ	1tons.We also can accept sample order.
Shipment time	Within 15-20 workdays after receiving deposit or L/C
Export packing	Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required

A572 Gr.55 Steel Chemical composition

Grade	C %	Si %	Mn %	P %	S %	V %	Ni %	Co %
A572 Gr.55	0.250	0.400	1.350	0.040	0.050	0.060	0.015	0.050

A572 Gr.55 Steel Mechanical Properties

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
768 (≥)	173 (≥)	12	33	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	144

Equivalent Grade of A572 Gr.55 Steel

Type	Steel Grade	Standard	Country	Application
Carbon and Low Alloy Steel	A572 Gr380	EN	Europe	Widely used in buildings, bridges, ships, power plant equipment, lifting and transportation machinery.
Carbon and Low Alloy Steel	Q390D	GB/T	China	Widely used in buildings, bridges, ships, power plant equipment, lifting and transportation machinery.