Overview

Cold Rolled Hexagons represent a premium category of steel bar products specifically engineered for applications demanding superior dimensional accuracy, enhanced surface finish, and consistent mechanical properties. Manufactured from ASTM A108 UNS G10180 low-carbon steel, these hexagons undergo a precise cold drawing process. This process transforms specially selected hot-rolled bars into finished products with tighter tolerances, improved straightness, and a smooth, scale-free surface ideal for machining.

The technical foundation of these Cold Rolled Hexagons is the G10180 steel grade, which features a slightly higher manganese content compared to other low-carbon steels like 1020. This composition makes it exceptionally well-suited for carburizing, resulting in a harder, more uniform case depth for components requiring a wear-resistant surface with a tough core. The cold rolling operation not only improves the dimensional precision of the hexagons but also increases their yield strength and hardness through work hardening, providing better mechanical properties straight from the stock.

In industrial applications, Cold Rolled Hexagons are the material of choice for manufacturing high-precision parts. They are commonly used for creating bolts, nuts, screws, shafts, and various custom machined components across numerous sectors. The excellent machinability of 1018 steel allows for faster production speeds, longer tool life, and superior surface finishes on finished parts, reducing overall manufacturing costs.

The primary advantages of using Cold Rolled Hexagons include their exceptional consistency from bar to bar, which minimizes production delays and rejects. Their ready-to-machine surface eliminates the need for preliminary cleaning or descaling, saving valuable time in the workshop. Furthermore, the cold finishing process ensures that every hexagon meets strict geometric tolerances, guaranteeing a perfect fit in assembly operations. For B2B buyers seeking reliable, high-quality raw materials for precision engineering projects, these hexagons offer an optimal balance of performance, quality, and value.

Specifications

Standard

ASTM A108

Grade

UNS G10180 / AISI 1018

Condition

Cold Drawn

Shape

Hexagon

Tolerance

ASTM A108 Cold Drawn Tolerances

Straightness

Standard commercial straightness

Surface Condition

Clean, smooth, scale-free

Size Range

1/4" to 2" (across flats)

Lengths

12' to 20' random mill lengths

Applications

• Fastener Manufacturing: Bolts, nuts, screws, studs
• Machined Components: Shafts, spindles, pins, bushings
• Automotive Parts: Gear blanks, transmission components
• Industrial Equipment: Machinery parts, tooling components
• Carburized Parts: Components requiring hardened surfaces
• Precision Engineering: Custom machined parts, fixtures
• Construction Hardware: Anchor bolts, structural fasteners
• Agricultural Equipment: Implement parts, machinery components

Weldability

• Good weldability using MIG, TIG, or Stick welding processes.
• Select filler material based on carbon content and application (typically ER70S-6).
• Thoroughly clean the weld area to remove any oils or contaminants.
• Preheat may be recommended for thicker sections or in cold environments.
• Note: Welding can affect the cold-worked properties in the heat-affected zone.
• Post-weld heat treatment may be necessary for critical applications.
• For carburized components, avoid welding after heat treatment if possible.

How to Measure & Specify

Order Checklist

• Size: Across flats dimension (e.g., 3/4")
• Grade: ASTM A108 1018 or other specified
• Quantity: Number of pieces or total linear feet
• Length: Desired length per piece (standard or custom)
• Tolerance: Standard cold drawn or special requirements
• Straightness: Standard commercial or special requirements
• Surface Finish: As-drawn, oiled, or special treatment
• Cutting Instructions: Tolerance, bundled, or individual
• Certifications: Mill Test Reports (MTRs) required (Yes/No)
• Packaging: Protective requirements for surface finish