SteelsforMechanicalEngineering
Raw material for shafts, gears and power-transmission components
Carbon and alloy steels supplied as raw material for manufacturing mechanical components, combining strength, toughness, hardenability and good machinability.
Introduction
Mechanical-engineering steels are fundamental to the component industry: shafts, gears, crankshafts, bearings, pins, bushings and power-transmission components are machined and heat-treated from these alloys.
Alloy selection depends on load level, the planned heat treatment and part section size. Carbon steels such as SAE 1020 and 1045 perform well in moderate-load applications, while chromium-molybdenum and chromium-nickel-molybdenum grades—SAE 4140, 4340, 8620 and 8640—are used for more highly stressed components.
Aços Formosa supplies these steels as raw material with certified origin and technical support to define the alloy, supply condition and heat-treatment route for each component.
MainMaterials
SAE 1020
Low carbon, good machinability, weldability and formability; suitable for carburizing
Raw material for pins, bushings, shafts and carburized parts under moderate loads
SAE 1045
Medium carbon, good mechanical strength and hardness after induction hardening
Raw material for shafts, bolts, gears and power-transmission components
SAE 4140
Quenched-and-tempered chromium-molybdenum steel with high strength, good toughness and hardenability
Raw material for shafts, crankshafts, gears and highly stressed components
SAE 4340
Chromium-nickel-molybdenum steel with high strength and toughness in large sections
Raw material for large shafts, crankshafts and critical transmission components
SAE 8620
Carburizing steel with a tough core and a high-hardness, wear-resistant surface
Raw material for carburized gears, pinions, pins and bushings
SAE 8640
Medium-carbon alloy steel with good hardenability and mechanical strength
Raw material for shafts, gears and high-load fasteners
SAE 52100
High-carbon chromium steel with high hardness, wear resistance and metallurgical cleanliness
Raw material for bearings, balls, races, rollers and wear bushings
Applications
- Shafts
- Gears
- Crankshafts
- Bearings
- Pins and Bushings
- Power-Transmission Components
- Machine Components
KeyAdvantages
Strength and Hardness
Alloys that combine mechanical strength and hardness after quenching and tempering, according to the component specification.
Toughness and Hardenability
Cr-Mo and Cr-Ni-Mo compositions ensure toughness and a uniform heat-treatment response, even in larger sections.
Wear Resistance
Carburizing steels and high-carbon chromium steels for surfaces exposed to contact, friction and cyclic loads.
Machinability
Controlled supply condition and microstructure for productive machining in component manufacturing.
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