Select a Size
0.042
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Cold Rolled Rounds
Cold Rolled Rounds
ASTM A108 UNS G10180 is a low-carbon steel with higher manganese content than certain other low-carbon steels. Being richer in manganese, 1018 is a better steel for carburized parts, since it produces a harder and more uniform case.
- 1018 (UNS G10180)
- Low-carbon steel
- Cold-rolled, smooth finish
- Excellent machinability
Cold Rolled Rounds are precision-engineered steel bars manufactured from low-carbon steel grades like UNS G10180 (1018), conforming to ASTM A108 standards. This production process involves rolling the steel at room temperature, which results in a product with superior dimensional accuracy, a smooth, uniform surface finish, and enhanced mechanical properties compared to hot-rolled alternatives.
These rounds are characterized by their low carbon content and higher manganese level, which contributes to a harder and more uniform case during carburizing processes. This makes Cold Rolled Steel Rounds, particularly grade 1018, exceptionally suitable for applications involving subsequent heat treatment.
Cold Rolled Rounds are indispensable in the fabrication of shafts, pins, axles, fasteners, and a wide array of machined parts. Their reliability and consistency are critical for industries such as automotive, aerospace, machinery manufacturing, and industrial equipment.
The primary benefits include excellent machinability, higher yield and tensile strength from the cold work process, superior surface finish, and predictable response to heat treatment. For B2B buyers, this translates to reduced waste, lower machining costs, and improved reliability in your final products.
Specifications
- Standard
- ASTM A108
- Grade
- UNS G10180 (1018)
- Type
- Low-Carbon Steel
- Process
- Cold Rolled
- Diameter Range
- 1/4" to 6" (custom sizes available)
- Tolerances
- Standard commercial tolerances per ASTM A108. Custom tolerances available upon request
- Straightness
- Meets or exceeds standard specifications for cold finished bars
- Surface Finish
- Smooth, scale-free finish from cold rolling process
Values may vary by mill & heat; verify against the MTR for your order.
Applications
- Machined Components: Shafts, spindles, pins, bolts, and studs
- Automotive Parts: Gears, axles, and other structural components
- Industrial Machinery: Guide rods, rollers, and actuator parts
- Construction: Fasteners and fittings requiring high strength-to-weight ratio
- Tooling: Jigs, fixtures, and non-critical tool holders
- Agricultural Equipment: Pins, shafts, and bushings
- General Manufacturing: Precision parts requiring close dimensional tolerances
Weldability
- Welds readily by MIG, TIG, Stick, or Flux-core processes
- Select filler based on section thickness, joint design, position, and service requirements
- Clean surfaces thoroughly before welding for best results
- Post-weld heat treatment may be required for critical applications to relieve stresses
How to Measure
Measure the diameter (Ø) using calibrated calipers at several points along the bar to ensure consistency. When ordering, specify material grade (e.g., 1018), diameter, length, quantity, and any special requirements.
Standard diameters are held to commercial tolerances. For critical applications, discuss precision tolerance requirements with our technical sales team.
Order Checklist
- Diameter (Ø) and required length (e.g., 1" x 20')
- Grade (e.g., 1018) and quantity (pieces, feet, or pounds)
- Cutting instructions (standard lengths or custom cuts with tolerance)
- Tolerance requirements (standard commercial or precision)
- Surface finish requirements (as-rolled, polished, etc.)
- Any certifications (Mill Test Report - MTR) required for traceability
- Special handling, packaging, or delivery requirements
Quick Facts
- Material
- Low Carbon Steel
- Chemistry (1018)
- Carbon: 0.15-0.20%, Manganese: 0.60-0.90%, Phosphorus: 0.040% max, Sulfur: 0.050% max
- Surface Finish
- Smooth, scale-free from cold rolling process
- Machinability
- Excellent, reduces tool wear and increases production efficiency
- Strength
- Higher yield and tensile strength than hot rolled equivalents
- Heat Treatment
- Excellent for carburizing (case hardening)
- Formability
- Good cold formability
- Weldability
- Good, with proper procedures
- Quality
- Manufactured under strict quality control standards
Need Stock Sizes?
Standard Diameters: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2", 1-7/8"
Larger Sizes: 2", 2-1/2", 3", 4", 5", 6" (special order, 3-5 day lead time)
Standard Lengths: 12' to 20' random mill lengths
Services: Cut-to-length, custom sizing, sawing, and shearing available
See Specifications| Item Size & Description | Weight (lbs.)/Ft | Select Size | Qty | Price | Actions |
|---|---|---|---|---|---|
| 0.042 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 0.094 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 0.167 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 0.261 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 0.376 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 0.512 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 0.667 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 1.044 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 1.504 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 2.046 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 2.673 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 4.175 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size | ||
| 9.397 |
Choose from predefined sizes or select custom size for manual entry |
Enter quantity between 1 and 999 | Select a Size |
Select a Size
0.094
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
0.167
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
0.261
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
0.376
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
0.512
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
0.667
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
1.044
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
1.504
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
2.046
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
2.673
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
4.175
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
Select a Size
9.397
Choose from predefined sizes or select custom size for manual entry
Enter quantity between 1 and 999
