AISI 1030 carbon steel is a high-carbon steel containing approximately 0.30% carbon that can be hardened by heat treatment to a maximum hardness of approximately Rockwell C 50. Soft annealed high carbon steel is intended for applications requiring moderate forming, while soft spheroidized annealed product is intended for applications requiring maximum cold forming. The soft spheroidized annealed product is processed to give the lowest hardness for maximum formability.

Chemical Composition

The chemical composition of AISI 1030 carbon steel is outlined in the following table.

Element C Mn P S More
Min 0.28 0.6 - - ①②③④⑤
Max 0.34 0.9 0.04 0.05

① When carbon steel is required to specify the Si content, it is usually selected according to the following five grades: Si≤ 0.10%, 0.10%~0.20%, 0.15%~0.35%, 0.20%~0.40%, 0.30%~0.60%.

② When the content of copper and Cu is specified for carbon steel, Cu ≥ 0.2%.

③ When it is necessary to add lead Pb element to the standard steel, the specified range is 0.15%~0.35% (including 0.35%). Such steel is identified by inserting the letter L between the second and third digits of the grade name, for example 10L45. When lead Pb was added to the ladle, no thermal analysis was performed.

④ When boronization of killed steel is specified, the content of boron in the steel should reach 0.0005%~0.003%. Steel containing titanium is not allowed, and the upper limit of boron content can reach 0.005%.

⑤ When the supply and demand sides reach an agreement, bismuth, calcium, selenium or tellurium can be added to carbon steel.

1030 Carbon Steel   Mechanical Properties

mechanical properties(Normalizing + quenching):
Grade Tensile strength  σb Yield strength  σ^s Z% Hardness Aku,J
(Mpa) (Mpa) A%
min min min min max min
1030 490 295 21 50 179HB 63

Equivalent Material

ASTM AISI SAE 1030 carbon steel equivalent material to European EN (Germany DIN EN, British BSI, French NF…), Chinese GB and Japanese JIS standard. AISI 1030 Steel Equivalent Material

High quality carbon structural steel
China Taiwan Japan Korea USA ISO Germany France Russia UK
30 U20302 S30C S30C SM30C 1030 G10300 C30E4 C30E 1.1178 C30E 30 C30E
Ck30 SC32 080M30

Physical Properties

Property AISI 1030
Density, lb/in3 0.284
Modulus of Elasticity, psi 29 x 106
Coefficient of Thermal Expansion, 68-212˚F, /˚F 6.5 x 10-6
Thermal Conductivity, Btu/ft hr ˚F 30
Specific Heat, Btu/lb ˚F 0.116
Electrical Resistivity, Microohm-in 6.54


The following are the major applications of AISI 1030 carbon steel:

  • Oil and Gas Pipeline
  • Chemical Industry
  • Plumbing
  • Heating
  • Oil & Gas Industry
  • Water Supply Systems
  • Paper & Pulp Industry
  • Power Plant
  • Fabrication Industry
  • General purpose applications
  • Food Processing Industry
  • Structural Pipe
  • Heat Exchangers
  • also used for other industrial purpose etc.

Qinghe steel offers a variety of shapes and grades of carbon steel, cut to the size you need. View our steel center here>. Qinghe Steel stocks a wide range of carbon steel for your specific project needs. We offer quick delivery throughout the world. Contact us today to discuss carbon steel for your project needs.

All About 1030 Steel You Must Know