Carbon Steel Chemical Composition, Grade Chart, Tables and PDF

Carbon steel is an alloy that is mainly made of iron and carbon; small traces of manganese, sulfur, phosphorus, and silicon can be also added. The final outcome is its chemical composition which is the determinant of its grade and property, consequently it is used in numerous industries by virtue of its strength, durability, and affordable nature. Common grades are low carbon, mostly found in 1018 (or 1015), 1140, 1020, medium carbon that comprises 1035, 1045, and 1060, and they have the required properties for the application. Tables describing the real chemical constitute of various low- to medium-carbon steel grades should serve as indispensable reference materials for engineers, manufacturers and metallurgists. 5.0 / 5.0 This information gives us a chance to check out the elasticity of the material that is being used by looking at tensile strength, yield strength, and hardness levels which will help in the process of material selection and quality control. When you need more elaborate explanations, please consult the resources provided in PDF format or the reference books on metallurgy and materials science.

Carbon Steel Chemical Composition Table

A composition of carbon steel table delineates the elemental make up of different carbon steel alloys, which is essential for the understanding of properties and performance of those alloys. Usually, the carbon steel contains a great deal of iron and carbon, in which others elements, for instance, manganese, phosphorus, sulfur, as well as silicon only present in traces. The makeup of concrete depends on the grade and type of application it is being use for. High carbon steels contain more carbon compared to low carbon grades which can make it tougher and harder; its downside is it is less easily shaped (not very ductile). Steel with low carbons also have little carbon, afford greater ductility and weldability than other types of steel. Knowing of the chemical composition helps to choose a proper carbon steel grade for numerous industrial applications.

Carbon Steel Composition Table

Types	Low Carbon Steel	Medium Carbon Steel	High Carbon Steel
Element	Content	Content	Content
Carbon, C	0.14 - 0.20 %	0.420 - 0.50 %	0.60 - 0.70
Iron, Fe	98.81 - 99.26 % (as remainder)	98.51 - 98.98 %	98.31 - 98.8
Manganese, Mn	0.60 - 0.90 %	0.60 - 0.90 %	0.60 - 0.90
Phosphorous, P	≤ 0.040 %	≤ 0.040 %	0.04
Sulfur, S	≤ 0.050 %	≤ 0.050 %	0.05

Comparison of properties and applications of different grades

Type	AISI/ASTM name	Carbon content (wt.%)	Tensile strength (MPa)	Yield strength (MPa)	Ductility (% elongation in 50 mm)	Applications
Low	1010	0.10	325	180	28	Automobile panels, nails, wire
Low	1020	0.20	380	205	25	Pipes, structural steel, sheet steel
Low	A36	0.29	400	220	23	Structural
Low	A516 Grade 70	0.31	485	260	21	Low-temperature pressure vessels
Medium	1030	0.27 – 0.34	460	325	12	Machinery parts, gears, shifts, axles, bolts
Medium	1040	0.37 – 0.44	620	415	25	Crankshafts, couplings, cold headed parts.
High	1080	0.75 – 0.88	924	440	12	Music wire
High	1095	0.90 – 1.04	665	380	10	Springs, cutting tool

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