SAE/AISI 1060 Carbon Steel Sheet: High-Carbon Grade for Demanding Applications
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SAE/AISI 1060 Carbon Steel Sheet: High-Carbon Grade for Demanding Applications
SAE/AISI 1060 is a high-performance medium-high carbon steel grade with exceptional hardness, wear resistance, and spring properties. Widely used across spring manufacturing, railways, tooling, and heavy equipment, 1060 CS sheet is a go-to material when standard carbon grades cannot meet the demands of extreme-load applications. This guide covers its composition, mechanical behaviour, industrial uses, and how it compares to adjacent grades.
Understanding the 1060 Grade
The SAE/AISI numbering system classifies 1060 as a carbon steel with approximately 0.60% carbon content. The increased carbon level, compared to grades like 1050, results in improved hardness and higher tensile strength. However, this comes with reduced ductility and weldability, so selection depends heavily on the end-use requirements.
Chemical Composition
- Carbon (C): 0.55 – 0.65%
- Manganese (Mn): 0.60 – 0.90%
- Phosphorus (P): Max 0.04%
- Sulphur (S): Max 0.05%
The higher carbon content distinguishes 1060 from 1050 and makes it one of the harder ungalvanised plain carbon steels available in sheet form.
Mechanical Properties of SAE/AISI 1060 CS Sheet
- Tensile Strength: 760 – 980 MPa
- Yield Strength: 420 – 640 MPa
- Hardness (Brinell): 200 – 241 HB (annealed)
- Elongation: 10 – 18%
After full hardening and tempering, 1060 can achieve Rockwell C hardness in the range of 55–62, making it suitable for cutting edges and wear-intensive applications.
Industrial Applications of 1060 Carbon Steel Sheet
Spring Manufacturing
SAE 1060 is a standard grade for flat springs, leaf springs, and coil springs. Its high carbon content enables excellent elasticity and resistance to permanent deformation under cyclic loading, which is critical for suspension systems and industrial machinery.
Railway Components
Rail clips, fishplates, and track components are often manufactured from 1060 CS due to its combination of strength and toughness under impact loads.
Cutting Tools and Blades
Cold-finished 1060 sheet stock is used for knives, saw blades, and agricultural cutting implements where edge retention is required without the expense of tool steels.
Wear Plates and Liners
In mining and material handling, 1060 CS wear plates provide cost-effective abrasion resistance in chutes, hoppers, and buckets.
Heat Treatment Capabilities
1060 steel responds well to full range heat treatment:
- Annealing Temperature: 780 – 830°C (furnace cool)
- Hardening Temperature: 790 – 845°C (oil quench)
- Tempering Range: 150 – 650°C depending on target hardness
Properly hardened and tempered, 1060 provides a remarkable combination of toughness and hardness suited to demanding service conditions.
Comparison: 1060 vs 1050 CS Sheet
Both 1050 and 1060 are medium-high carbon steels, but 1060 offers higher hardness and spring performance at the cost of some weldability and formability. If your application requires a more workable material, 1050 may be appropriate. Where hardness and fatigue resistance are paramount, 1060 is superior.
Explore our SAE/AISI 1050 CS Sheet for a lower-carbon alternative with better machinability.
Welding and Fabrication Considerations
Due to its higher carbon content, 1060 requires preheating (typically 200–300°C) before welding to prevent cracking. Post-weld heat treatment is also recommended to relieve residual stresses. Low hydrogen electrodes should be used in all welding operations.
Available Sizes and Supply
OM Steel supplies SAE/AISI 1060 CS sheet in hot-rolled and cold-drawn finishes, with custom cutting to required dimensions. Sheets are available in thicknesses from 1.5 mm to 50 mm, with standard widths up to 2500 mm. All material is accompanied by Mill Test Certificates and material traceability reports.
Contact us or visit our product page to order SAE/AISI 1060 Carbon Steel Sheet with fast delivery across India.
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A: Carbon steel relies on carbon content alone for its properties. Alloy steel adds elements like chromium, nickel, molybdenum, and vanadium to achieve specific improvements — higher strength, better low-temperature toughness, creep resistance, or corrosion resistance — giving it a far broader performance range than carbon steel.
A: For ambient to 400°C service, ASTM A516 Grade 70 is the standard choice. For high-temperature refinery or power plant use (up to 600°C), ASTM A387 Grade 11 or 22 (chrome-moly) applies. For cryogenic service down to -196°C, 9% nickel steel (ASTM A553) is required.
A: Wear-resistant grades like AR400/AR500 are quenched to martensitic hardness of 370–500 HB — 3–4× harder than structural grades like A572-50. They resist abrasive wear in mining and construction equipment but have limited weldability and are not suitable as primary structural members.
A: CE (= C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15) predicts susceptibility to hydrogen-induced cold cracking during welding. Sheets with CE above ~0.40 require preheating to slow cooling and allow hydrogen diffusion, preventing weld cracking. Always develop a qualified WPS based on the specific CE value.
