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Product Description
Carbon steelGRADE:BS 040A04 050A04 040A10 045A10 060A10 040A15 050A15 060A15 040A20 050A20 060A20 060A25 070m26 060a30 060a35 060a40 060a42 060a47 060a52 060a57 070m35 060a62 060a67 060a72 070A70 060A78 070A78 060A83 050A86 060A86 080A15 080A17 080A20 080A25 080A27 080A30 080M30 080A35 080M36 080A47 08M40 080A47 080M46 080A52 080M50 080A57 080A62 080A67 080A72
Carbon steel is an iron-carbon alloy with a carbon content of 0.5718% to 2.11%. Also called carbon steel. Generally contains a small amount of silicon, manganese, sulfur, phosphorus. Generally, the higher the carbon content in carbon steel, the greater the hardness and the higher the strength, but the lower the plasticity.
species
Carbon structural steel
Brand: Example Q235-A·F, which means σs=235MPa.
Brand notes: Q is the yield strength A quality grade (with ABCD grade 4), F boiling steel.
Features: low price and excellent process performance (such as weldability and cold formability).
Application: General engineering structure and general mechanical parts. For example, Q235 can produce bolts, nuts, pins, hooks and less important mechanical parts, as well as screw steel, section steel, steel bars in building structures.
High-quality carbon structural steel
Trademarks: Example 45, 65Mn, 08F.
Brand annotation: directly expresses the carbon content of the metal in tens of thousands.
Application: Non-alloy steels used to manufacture important mechanical parts are generally used after heat treatment.
Common steel grades and uses:
08F, low mass fraction of carbon, good plasticity, low strength, used for stamping parts such as automobile and instrument shell;
20, good plasticity and weldability, used for parts with low strength requirements and carburized parts, such as hoods, welded containers, small shafts, nuts, washers and carburized gears;
45, 40Mn, with good comprehensive mechanical properties after quenching and tempering, used for mechanical parts with greater stress, such as gears, connecting rods, machine tool spindles, etc.;
60, 65Mn steel has high strength; it is used to manufacture various springs, rims of locomotive wheels, and low-speed wheels.
Carbon tool steel
Brand: For example, T12 steel means carbon tool steel with Wc=1.2%.
Grade notes: T plus the metal carbon content in thousand.
Features: It belongs to eutectoid steel and hypereutectoid steel, with high strength and hardness, and good wear resistance. It is suitable for manufacturing various low-speed cutting tools.
Common steel grades and uses:
T7, T8: Manufacture parts that require a certain impact and require toughness. Such as sledgehammer, punch, chisel, woodworking tools, scissors.
T9, T10, T11: Manufacture tools with low impact and high hardness and wear resistance. Such as taps, small drills, dies, and hand saw blades.
T12, T13: Make tools that are not impacted. Such as files, scrapers, razors, measuring tools.
Cast steel
Brand: For example, ZG200-400, means cast steel with σs=200MPa and σb=400MPa.
Performance: Casting performance is worse than cast iron, but mechanical properties are better than cast iron.
Application: It is mainly used to manufacture more important mechanical parts with complex shapes and high mechanical performance requirements, and it is difficult to form by forging and other methods in the process, such as automobile gearbox shells, couplers and couplings of rolling stock.
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