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.
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.
| 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 |
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 | |||
| GB | ISC | CNS | JIS | KS | ASTM/AISI | UNS | ISO | DIN EN/DIN | W-Nr. | NF EN/NF | GOST | BS EN/BS |
| 30 | U20302 | S30C | S30C | SM30C | 1030 | G10300 | C30E4 | C30E | 1.1178 | C30E | 30 | C30E |
| Ck30 | SC32 | 080M30 | ||||||||||
| 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:
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