AISI 1141
It is a medium-carbon, resulfurized "free-machining" steel commonly used in forged components due to its balance of strength, machinability, and cost-effectiveness. It belongs to the 1100 series of steels, characterized by higher sulfur content for improved machining performance.
Descriptions
1. Chemical Composition
AISI 1141 complies with the following chemical composition (weight %):
2. Mechanical Properties
Mechanical properties vary with heat treatment and forging processes. Typical values for hot-forged and normalized AISI 1141 components include:
3. Key Advantages
Superior machinability due to sulfur inclusion.
Good wear resistance and fatigue strength.
Cost-effective for high-volume production.
4. Limitations
Reduced weldability (avoid welding unless using specialized techniques).
Lower ductility compared to low-sulfur steels (e.g., AISI 1045).
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CONTACT US
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Email Address
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Standards & Certifications
ASTM A29/A29M (Standard Specification for Steel Bars, Carbon and Alloy).
SAE J403 (Chemical Composition of SAE Carbon Steels)
Applications
a. Drilling Equipment
Tool Joints and Drill String Adapters:
High machinability allows rapid production of threaded connections. Sulfur inclusions reduce tool wear during mass production.Mud Pump Liners and Pistons:
Moderate wear resistance and ease of machining suit components exposed to abrasive drilling fluids.
b. Valve Components
Valve Stems and Bushings:
Precision-machined parts requiring smooth surfaces and dimensional accuracy.
c. Surface Hardware
Bolts, Studs, and Fasteners:
High-volume production of standardized fasteners for rig assembly and pipeline flanges.
d. Hydraulic Systems
Cylinder Rods and Actuator Parts:
Used in low-to-medium pressure systems where strength and machinability outweigh corrosion concerns.
a. Material Handling Systems
Conveyor Chain Links and Sprockets:
High tensile strength and machinability support rapid production of replacement parts.Shafts for Crushers and Screens:
Moderate load-bearing capacity suits secondary crushing equipment.
b. Wear Parts
Bucket Teeth and Adapters:
Surface-hardened AISI 1141 forgings (via induction hardening) for excavators and loaders.Hammer Mill Pins:
Cost-effective solution for replaceable impact components.
c. Drilling Tools
Rock Drill Bushings and Collars:
Machined to tight tolerances for percussive drilling equipment.
d. Support Structures
Brackets and Mounting Plates:
Non-critical structural parts requiring minimal post-forging machining.
Automotive: Axles, gears, shafts, and connecting rods.
Industrial Machinery: Bolts, studs, hydraulic components, and spindles.
Agriculture: Wear-resistant parts, tillage tools, and drivetrain components.
Construction: Fasteners, brackets, and forged fittings.
