1035 Round steel

AISI 1035 is a plain carbon steel, falling into the medium carbon steel category (typically 0.25% to 0.60% carbon). Its designation "1035" indicates that it contains approximately 0.35% carbon. It is prized for being a low-cost, tough, and readily available material that offers higher strength and hardness than low-carbon steels like 1018 or 1020, while maintaining good formability and machinability. It is typically supplied in the hot-rolled, cold-drawn, or as-forged condition.

As a medium carbon steel, 1035 responds well to heat treatment, allowing manufacturers to tailor its mechanical properties for specific applications.

Normalizing: Performed at approximately 870-900°C (1600-1650°F) followed by cooling in still air. This refines the grain structure and creates a more uniform microstructure after forging or hot rolling.

Annealing: Carried out to soften the steel, relieve internal stresses, and improve machinability. The process involves heating and then cooling slowly in the furnace.

Hardening: 1035 can be hardened by austenitizing at 830-860°C (1525-1575°F) followed by quenching in water or oil. This process transforms the structure to martensite, significantly increasing hardness and strength.

Tempering: After hardening, tempering is essential to reduce brittleness and relieve quenching stresses. Tempering temperatures typically range from 400-680°C (750-1260°F), depending on the desired balance of hardness and toughness.

1035 round bar is available in a variety of sizes and finishes to suit different manufacturing processes :

Diameter Range: Typically available from 16mm up to 360mm or more, depending on the mill.

Lengths: Commonly supplied in 3-meter, 6-meter, or random lengths.

Surface Conditions:

Hot Rolled (Black): Scaled surface, suitable for applications where surface finish is not critical.

Cold Drawn: Improved dimensional tolerances, brighter surface finish, and enhanced mechanical properties.

Peeled / Turned: A machined surface free of decarburization and scale, ideal for precision applications.

Forged: For larger diameters or specific grain flow requirements.

The balanced properties of 1035 steel round bar make it a go-to material for a vast array of general engineering and manufacturing applications, particularly those involving cold forming, forging, and machining.

Fasteners and Hardware: It is widely used for cold-headed and hot-forged parts such as bolts, nuts, studs, screws, and rivets.

Shafts and Axles: Its strength and toughness make it ideal for general-purpose shafts, axles, spindles, and connecting rods.

Machine Parts: Commonly found in the production of gears, pins, levers, cams, and rollers that require moderate surface hardness and core strength.

Construction Components: Used for tie rods, anchor bolts, and truss components.

Tooling: Suitable for manufacturing certain hand tools, chain pins, and sealing rings.

1035 round bar is available in a variety of sizes and finishes to suit different manufacturing processes :

Diameter Range: Typically available from 16mm up to 360mm or more, depending on the mill.

Lengths: Commonly supplied in 3-meter, 6-meter, or random lengths.

Surface Conditions:

Hot Rolled (Black): Scaled surface, suitable for applications where surface finish is not critical.

Cold Drawn: Improved dimensional tolerances, brighter surface finish, and enhanced mechanical properties.

Peeled / Turned: A machined surface free of decarburization and scale, ideal for precision applications.

Forged: For larger diameters or specific grain flow requirements.