Cold Drawn Steel Bars Boost Precision Machining Efficiency

Imagine a steel material that simultaneously reduces machining time while maintaining superior surface finish—what transformative potential could this hold for manufacturing? The 1215 cold-drawn steel bar emerges as this ideal solution, offering both productivity gains and cost reductions.

Supplied by Eaton Steel Bar Company, 1215 cold-drawn steel is a resulfurized and rephosphorized carbon steel. The strategic addition of sulfur and phosphorus grants exceptional machinability, classifying it as a free-cutting steel. Commonly referred to as "screw stock," this material excels in automatic screw machine operations, particularly for components requiring extensive machining and bright surface finishes.

• Enhanced chip formation: The modified microstructure promotes easier chip breaking during machining
• Extended tool life: Reduced tool wear translates to lower production costs
• Superior surface quality: Minimizes need for secondary finishing operations
• Improved weldability: The low carbon content facilitates welding processes

1215 cold-drawn steel bars serve diverse sectors requiring precision machining:

Ideal for fabrication of connectors and fasteners where strength requirements are moderate.

Widely used in small component production including:

• Pins and bushings
• Shaft couplings
• Threaded studs
• Hydraulic fittings

Preferred for precision electrical components such as terminal connectors and contact pins.

Eaton Steel Bar Company supplies 1215 cold-drawn bars meeting:

• ASTM A108 specifications
• ASTM A576 standards

Available in diameters ranging from 5/16" to 11" with multiple profile options:

• Hexagonal bars
• Square profiles
• Round stock

Chemical Composition:

• Carbon (max): 0.09%
• Manganese: 0.75-1.05%
• Phosphorus: 0.04-0.09%
• Sulfur: 0.26-0.35%

Mechanical Properties:

• Tensile Strength: 68,000-78,000 psi
• Yield Strength: 65,000-75,000 psi
• Elongation (2"): 15-20%
• Reduction of Area: 50-60%
• Brinell Hardness: 150-170 BHN

When specifying 1215 cold-drawn steel, engineers should evaluate:

• Component load-bearing requirements
• Machining complexity and volume
• Surface finish specifications
• Post-machining treatment needs

The growing demand for manufacturing efficiency continues to drive adoption of 1215 steel, particularly in automotive and electronics sectors. Ongoing metallurgical advancements may further enhance its mechanical properties through micro-alloying techniques.

Minimum order quantity: 10,000 lbs.