1018 Round Solid Cold Roll
C1018 Cold Finished Round (CRS Round) represents precision-engineered steel at its finest. Unlike its hot-rolled counterparts, this premium material delivers exceptional dimensional consistency, tighter tolerances, and a silky-smooth surface finish that reduces finishing work. This versatile low-carbon steel offers outstanding case hardening capabilities, allowing for a wear-resistant exterior while maintaining a tough, ductile core. Its balanced carbon content makes it the gold standard for cold forming and bending operations, with minimal spring-back and excellent workability.
1018 cold rolled steel round bars feature a distinctive smooth, dark gray oiled finish that not only enhances aesthetic appeal but also provides initial corrosion protection. These precision-manufactured bars maintain exceptionally tight dimensional consistency throughout their entire length—a crucial factor for applications requiring exacting fits. Meeting the rigorous ASTM A108-07 specification, they deliver the perfect combination of strength, machinability, and dimensional stability for critical components like precision shafts, load-bearing hinges, and alignment dowels.
C1018 Cold Finished Round (CRS Round) represents precision-engineered steel at its finest. Unlike its hot-rolled counterparts, this premium material delivers exceptional dimensional consistency, tighter tolerances, and a silky-smooth surface finish that reduces finishing work. This versatile low-carbon steel offers outstanding case hardening capabilities, allowing for a wear-resistant exterior while maintaining a tough, ductile core. Its balanced carbon content makes it the gold standard for cold forming and bending operations, with minimal spring-back and excellent workability.
1018 cold rolled steel round bars feature a distinctive smooth, dark gray oiled finish that not only enhances aesthetic appeal but also provides initial corrosion protection. These precision-manufactured bars maintain exceptionally tight dimensional consistency throughout their entire length—a crucial factor for applications requiring exacting fits. Meeting the rigorous ASTM A108-07 specification, they deliver the perfect combination of strength, machinability, and dimensional stability for critical components like precision shafts, load-bearing hinges, and alignment dowels.
Specifications
Custom Cut Tolerance
±1/16"
Available Lengths
2ft, 4ft, 6ft, 10-12ft Randoms, or Custom Cut
PageTitle
1018 Cold Rolled Steel Round Bar, Precision Machined CRS, ASTM A108
Standard Length Tolerance
±1/4"
Heat Treatment
Carburizing temperature: 1650°F - 1700°F
Oil or water quench and temper at 300°F
Carburizing depth typically 0.060" - 0.070"
Carburizing method results in a hard case and relatively soft core
Oil or water quench and temper at 300°F
Carburizing depth typically 0.060" - 0.070"
Carburizing method results in a hard case and relatively soft core
Chemistry
Carbon: 0.14 - 0.20%
Iron: 98.81 - 99.26%
Manganese: 0.6 - 0.9%
Phosphorus: 0.04% max
Sulfur: 0.05% max
Iron: 98.81 - 99.26%
Manganese: 0.6 - 0.9%
Phosphorus: 0.04% max
Sulfur: 0.05% max
Applications
Shafts, pins, and axles
Dowels, slides, and fixtures
Machine parts, non-critical tool components
Automotive, ornamental, and structural applications
Cold-formed parts such as crimping, swaging, and bending
Dowels, slides, and fixtures
Machine parts, non-critical tool components
Automotive, ornamental, and structural applications
Cold-formed parts such as crimping, swaging, and bending
Material Properties
Good case hardening qualities
Improved dimensional accuracy and tolerances
Higher tensile and yield strength compared to hot rolled steel
Good weldability
Fair machinability and wear resistance
Poor corrosion resistance
Improved dimensional accuracy and tolerances
Higher tensile and yield strength compared to hot rolled steel
Good weldability
Fair machinability and wear resistance
Poor corrosion resistance
Mechanical Properties
Machinability rating: 78% of B1112
Shear Modulus = 11,300 ksi
Ultimate Tensile Strength = 63.8 ksi
Yield Tensile Strength = 53.7 ksi
Elongation at Break = 15%
Reduction of Area = 40%
Modulus of Elasticity = 29,000 ksi
Poisson’s Ratio = 0.29
Hardness Rockwell B71
Brinell Hardness = 126
Shear Modulus = 11,300 ksi
Ultimate Tensile Strength = 63.8 ksi
Yield Tensile Strength = 53.7 ksi
Elongation at Break = 15%
Reduction of Area = 40%
Modulus of Elasticity = 29,000 ksi
Poisson’s Ratio = 0.29
Hardness Rockwell B71
Brinell Hardness = 126
Specifications
AISI 1018
ASTM A108
UNS G10180
ASTM A108-07
Tensile Strength = 64 ksi
Yield Strength = 54 ksi
Shear Strength = 11 ksi
Elasticity = 29 ksi
Brinell Hardness = 126
Melting Point = 2600°F
ASTM A108
UNS G10180
ASTM A108-07
Tensile Strength = 64 ksi
Yield Strength = 54 ksi
Shear Strength = 11 ksi
Elasticity = 29 ksi
Brinell Hardness = 126
Melting Point = 2600°F
Tolerances
Round Bar Tolerance (Up to 1-1/2"): -0.002"
Round Bar Tolerance (1-1/2" to 2-1/2"): -0.003"
Round Bar Tolerance (2-1/2" to 4"): -0.004"
Round Bar Tolerance (4" to 6"): -0.005"
Round Bar Tolerance (6" to 8"): -0.006"
Square Bar Tolerance (Up to 3/4"): -0.002"
Square Bar Tolerance (3/4" to 1-1/2"): -0.003"
Square Bar Tolerance (1-1/2" to 2-1/2"): -0.004"
Straightness Tolerance (< 5/8" Diameter): ±1/8" in 10ft
Straightness Tolerance (5/8" Diameter and Over): ±1/16" in 10ft
Round Bar Tolerance (1-1/2" to 2-1/2"): -0.003"
Round Bar Tolerance (2-1/2" to 4"): -0.004"
Round Bar Tolerance (4" to 6"): -0.005"
Round Bar Tolerance (6" to 8"): -0.006"
Square Bar Tolerance (Up to 3/4"): -0.002"
Square Bar Tolerance (3/4" to 1-1/2"): -0.003"
Square Bar Tolerance (1-1/2" to 2-1/2"): -0.004"
Straightness Tolerance (< 5/8" Diameter): ±1/8" in 10ft
Straightness Tolerance (5/8" Diameter and Over): ±1/16" in 10ft
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