AISI 1030 Carbon Steel
We are AISI 1030 Carbon Steel Manufacturers, Suppliers, and Exporters in Mumbai, India. STEEL MART is an ISO 9001:2015 certified company established in 1986, with decades of experience in supplying high-quality carbon steel products to various industries. We specialize in manufacturing and supplying AISI 1030 Carbon Steels (UNS G10300 / SAE 1030) that meet national and international quality standards for machinery, automotive, forging, and heavy engineering applications. AISI 1030 Carbon Steel is a medium carbon plain steel known for its elevated tensile strength (520-660 MPa), good yield strength, excellent machinability (70%), and superior response to thermal heat treatment. With carbon content balanced between 0.28% and 0.34%, AISI 1030 offers enhanced wear resistance and hardness compared to low carbon grades while maintaining good toughness and forgeability. AISI 1030 is typically supplied in hot rolled, cold drawn, normalized, or quenched and tempered (Q&T) condition, ensuring consistent structural integrity and mechanical performance. This carbon steel grade is widely used for manufacturing machinery shafts, axles, connecting rods, light gears, pinions, studs, and forged fittings.
Our AISI 1030 Carbon Steels are 100% Prime – Tested & Guaranteed, ensuring precise chemical composition, dimensional accuracy, and consistent mechanical properties. Each product is supplied with proper Mill Test Certificates (MTC) confirming compliance with ASTM A108 / SAE standards. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is AISI 1030 Carbon Steel?
AISI 1030 Carbon Steel (UNS G10300 / SAE 1030) is a versatile medium carbon unalloyed steel grade designed for components requiring medium tensile strength, good wear resistance, and high structural reliability. Supplied in hot rolled, cold drawn, normalized, or heat-treated conditions, it offers balanced machinability and uniform response to flame/induction hardening for shafts, gears, connecting rods, and forged fittings.
Medium Tensile Strength
Delivers up to 660 MPa tensile strength for machinery components.
Good Machinability
Machined cleanly at 70% rating for precision shafts and fittings.
Excellent Forgeability
Forges easily at 1050°C–1150°C for custom machinery parts.
Induction / Flame Hardening
Surface hardens up to 50–55 HRC for wear-resistant gears and cams.
Ductile Tough Core
Maintains core ductility to withstand mechanical shock and fatigue.
Certified Quality
Supplied with full MTC and strict quality compliance.
Why Choose STEEL MART for AISI 1030 Carbon Steel
STEEL MART is the preferred choice for purchasing AISI 1030 Carbon Steel due to its strong reputation for quality and reliability. With over 40 years of experience in the steel industry, the company ensures that every product meets strict industry standards. The company follows strict quality inspection procedures to ensure that every AISI 1030 Carbon Steel product meets international standards.
Each product is carefully tested to ensure durability, strength, and performance. Customers trust STEEL MART for consistent quality, competitive pricing, and timely delivery. The company maintains a large inventory to meet urgent and bulk requirements efficiently. In addition to AISI 1030 Carbon Steels, STEEL MART also supplies a wide range of carbon steel and alloy steel products for various industrial applications.
Chemical Composition of AISI 1030 Carbon Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.28 – 0.34 % |
| Manganese (Mn) | 0.60 – 0.90 % |
| Silicon (Si) | 0.15 – 0.35 % |
| Sulphur (S) | 0.050 % Max |
| Phosphorus (P) | 0.040 % Max |
This medium carbon composition ensures balanced strength, hardness, and machinability.
Equivalent Grades of AISI 1030 Carbon Steel
| Standard | Equivalent Grade |
|---|---|
| AISI / SAE | 1030 / UNS G10300 |
| BS 970 | 080M30 / EN 5B / EN 5K |
| DIN / W.Nr. | C30 / 1.0528 |
| EN | C30E / 1.1178 |
| JIS | S30C |
These equivalent grades ensure global compatibility across engineering standards.
Mechanical Properties of AISI 1030 Carbon Steel
The mechanical properties of AISI 1030 Carbon Steels make them ideal for medium-duty machinery, axles, and forged components. In normalized or Q&T condition, it offers a tensile strength of 520–660 MPa and yield strength of 340–440 MPa.
Heat Treatment & Processing of AISI 1030 Carbon Steel
AISI 1030 Carbon Steels respond effectively to quenching, tempering, and surface induction hardening.
Normalizing
Heated to 880°C–910°C and air-cooled to refine grain structure.
Quenching
Heated to 840°C–870°C and quenched in oil or water for hardening.
Tempering
Reheated to 550°C–660°C to achieve optimum toughness and strength.
Induction Hardening
Localized surface hardening to 50–55 HRC for wear components.
AISI 1030 Carbon Steel Industry Applications
AISI 1030 Carbon Steels are widely used across machine building, automotive, and forging sectors.
Machinery Shafts & Axles
Used for medium-duty drive shafts, axles, and spindles.
Connecting Rods & Cranks
Used for automotive connecting rods, cranks, and levers.
Studs & Coupling Pins
Used for high-strength studs, tie rods, and coupling pins.
Gears & Pinions
Used for flame-hardened light gears, pinions, and sprockets.
Forged Flanges & Valves
Used in forged pipe fittings, flanges, and valve bodies.
Heavy Equipment Parts
Used in press shafts, machine tool spindles, and rotors.
Availability and Customization
At STEEL MART, we supply AISI 1030 Carbon Steels in a wide range of sizes and specifications.
| Diameter / Thickness | Diameter ranging from 10 mm to 400 mm / Plates & Forgings available |
| Condition | Available in Hot Rolled / Cold Drawn / Normalized / Q&T condition |
| Length | Standard lengths from 3 meters to 6 meters |
| Finish | Bright cold drawn, black hot rolled, and turned finish available |
| Customization | Custom cut sizes and forged blocks available per project requirements |
| Services | Forging, machining, cutting, turning, and grinding services available |
| Certification | Supplied with Mill Test Certificates and inspection reports |
Our strict quality control ensures consistent quality.
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AISI 1030 Carbon Steel (UNS G10300 / SAE 1030) is a premier medium carbon unalloyed engineering steel widely used across machinery manufacturing, automotive forgings, and mechanical engineering. With its elevated tensile strength (520–660 MPa), good machinability (70%), excellent heat treatment response, and surface induction hardenability (50–55 HRC), it provides long-term reliability for drive shafts, axles, connecting rods, light gears, and forged flanges. Supplied by STEEL MART with strict quality control and Mill Test Certification, AISI 1030 Carbon Steel is a dependable solution for medium-stress engineering applications.
Frequently Asked Questions
Common answers regarding AISI 1030 Carbon Steel specifications and parameters.
Yes, it responds well to quenching and tempering (Q&T) for improved tensile strength, as well as flame or induction hardening up to 50–55 HRC.
It has higher carbon (0.28–0.34%), providing greater tensile strength (520–660 MPa) and wear resistance while maintaining good toughness.
SAE 1030 / UNS G10300, BS 970 080M30 (EN 5B), DIN C30 (1.0528), and JIS S30C.
Machinery shafts, axles, connecting rods, light gears, pinions, studs, coupling pins, and forged flanges.
Round bars, Flat bars, Hex bars, Plates, Forgings, and custom cut sizes.