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Carbon structural steel

Grade: Example Q235-A·F, which means σs=235MPa.

    Features: low price, excellent process performance (such as weldability and cold formability).

Application: general engineering structure and general mechanical parts. For example, Q235 can make bolts, nuts, pins, hooks and less important mechanical parts, as well as rebar, section steel, steel bars in building structures.

High-quality carbon structural steel

Grades: Example 45, 65Mn, 08F.

Application: Non-alloy steel used to manufacture important mechanical parts is generally used after heat treatment.

Common steel grades and uses:

08F, carbon has low mass fraction, good plasticity and low strength, used for stamping parts such as automobile and instrument housing;

20. Good plasticity and weldability, used for parts with low strength requirements and carburized parts, such as hoods, welded containers, small shafts, nuts, washers, carburized gears, etc.;

45, 40Mn, after quenching and tempering, the comprehensive mechanical properties are good, and it is used for mechanical parts with greater force, such as gears, connecting rods, machine tool spindles, etc.;

60, 65Mn steel has high strength; it is used to manufacture various springs, locomotive wheel flanges, and low-speed wheels.

Carbon tool steel

Grade: For example, T12 steel means carbon tool steel with Wc=1.2%.

Features: It belongs to eutectoid steel and hypereutectoid steel, with high strength, hardness and good wear resistance. It is suitable for manufacturing various low-speed cutting tools.

Common steel grades and uses:

T7, T8: To produce parts that withstand certain impacts and require toughness. Such as sledgehammers, punches, chisels, woodworking tools, scissors.

T9, T10, T11: manufacture tools that require high hardness and high wear resistance with less impact. Such as taps, small drills, dies, hand saw blades.

T12, T13: Make tools that are not impact-resistant. Such as files, scrapers, razors, measuring tools.

Cast steel

Grade: For example, ZG200-400, which means cast steel with σs=200MPa and σb=400MPa.

Performance: The casting performance is worse than cast iron, but the mechanical properties are better than cast iron.

Application: It is mainly used to manufacture more important mechanical parts that have complex shapes and high mechanical performance requirements, but are difficult to form by forging and other methods, such as automobile gearbox shells, rolling stock couplers and couplings, etc.

Application

The applications of carbon steel plates include manufacturing and construction. The use of carbon steel even extends to durable storage containers that can be used for decades in the manufacturing environment, bridges, ships, and even various types of commercial and municipal buildings. The strength provided by steel, steel plate can be used to manufacture various supports and brackets, which are part of the overall structural design.