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A588 Carbon Steel Plate

ASTM A588 steel is classified into Class A, Class B, Class C, and Class K. The ASTM A588 steel specification is based on the standard specification for high-strength low-alloy structural steel with a lower yield point of up to 50ksi for applications requiring high strength and corrosion resistance.

Product Parameters

Carbon Steel: Properties, Production, Examples and Applications

Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.

Types of carbon steel and their properties

Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel [1]. Their carbon content, microstructure and properties compare as follows:

Carbon content (wt.%)	Microstructure	Properties	Examples
Low-carbon steel	< 0.25	Ferrite, pearlite	Low hardness and cost. High ductility, toughness, machinability and weldability	AISI 304, ASTM A815, AISI 316L
Medium-carbon steel	0.25 – 0.60	Martensite	Low hardenability, medium strength, ductility and toughness	AISI 409, ASTM A29, SCM435
High-carbon steel	0.60 – 1.25	Pearlite	High hardness, strength, low ductility	AISI 440C, EN 10088-3

Carbon Steel Description

Grade:

1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E

2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q

3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80

4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE

PRODUCT DETAILS

A588 Carbon Steel Plate Description

A588 carbon steel plate has been specially treated to show good corrosion resistance. It can resist corrosion from the atmosphere, sea water, salt spray and other environments, thus extending its service life. For another, A588 carbon steel plate is made of high-strength steel and has high yield strength and tensile strength, which can meet the requirements of various structural parts. The plate also has good welding performance, is easy to weld and process, and therefore improves the efficiency of engineering installation. A588 carbon steel plates are suitable for various structural parts that require corrosion resistance and high strength, such as bridges, buildings, ships, vehicles, etc.

Product Parameters
Product Name	A588 Carbon Steel Plate
Production Process	Hot Rolling, Cold Rolling
Material Standards	AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Width	100mm-3000mm
Length	1m-12m, or Customized Size
Thickness	0.1mm-400mm
Delivery Conditions	Rolling, Annealing, Quenching, Tempered or Standard
Surface Process	Ordinary, Wire Drawing, Laminated Film

Chemical Composition
A588	C	Mn	P	S	Ni	Si	Cr
GradeA	≤ 0.19	0.80~1.25	≤ 0.04	≤ 0.05	≤ 0.40	0.30-0.65	0.40-0.65
GradeB	≤ 0.20	0.75~1.35	≤ 0.04	≤ 0.05	≤ 0.50	0.15-0.50	0.40-0.70
GradeC	≤ 0.15	0.80~1.35	≤ 0.04	≤ 0.05	0.25-0.50	0.15-0.40	0.30-0.50
GradeK	≤ 0.17	0.50~1.20	≤ 0.04	≤ 0.05	≤ 0.40	0.25-0.50	0.40-0.70

Mechanical Properties
A588	Tensile Strength	Yield Strength	Elongation 200mm%	Elongation 50in%
Thickness≤100mm	485	345	18	21
Thickness>100-125mm	460	315	-	21
Thickness>125-200mm	435	290	-	21

Physical Performance
Physical Performance	Metric	Imperial
Density	7.75g/cc	0.280 lb/in³

Scope of Application

ASTM A588 steel is known for its weather resistance. When exposed to external conditions, its corrosion resistance becomes stronger even if it is not painted. ASTM A588 steel has four times the corrosion resistance of carbon steel. The application of ASTM A588 steel is very wide. In addition to its typical application in welded bridges and buildings, this specification is also widely used in railway passenger cars; including transmission towers and telephone towers, trucks, bridges and gusset plates, and housing shells. ASTM A588 steel also maintains a good strength-to-weight ratio, meeting the high strength requirements of carbon steel with less weight.

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