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Home > Standard > Carbon steel standard

Carbon steel

Carbon steel standard Download, We provide the main countries around the ISO standard download, including: AISI(US),UNS(US),SAE(US),ASTM(US),AMS(US),ASME(US),MIL(US),FED(US),DIN(DEU),JIS(JPN),AFNOR(FR),B.S.(UK),SS(SWE),UNI(ITA).

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Carbon steel is steel where the main interstitial alloying constituent is carbon. The American Iron and Steel Institute (AISI) defines carbon steel as the following: "Steel is considered to be carbon steel when no minimum content is specified or required for chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 1.04 percent; or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60."

The term "carbon steel" may also be used in reference to steel which is not stainless steel; in this use carbon steel may include steel/" target="_blank" class="keylink">alloy steels.
As the carbon content rises, steel has the ability to become harder and stronger through heat treating, but this also makes it less ductile. Regardless of the heat treatment,
a higher carbon content reduces weldability. In carbon steels, the higher carbon content lowers the melting point.

Carbon steel is broken down in to four classes based on carbon content:

1. Mild and low carbon steel
Mild steel, also called plain-carbon steel, is the most common form of steel because its price is relatively low while it provides material properties that are acceptable for
many applications. Low carbon steel contains approximately 0.05–0.15% carbon and mild steel contains 0.16–0.29% carbon; making it malleable and ductile, but it cannot be hardened by heat treatment.

2. Medium carbon steel
Approximately 0.30–0.59% carbon content. Balances ductility and strength and has good wear resistance; used for large parts, forging and automotive components.

3. High carbon steel
Approximately 0.6–0.99% carbon content. Very strong, used for springs and high-strength wires.

4. Ultra-high carbon steel
Approximately 1.0–2.0% carbon content. Steels that can be tempered to great hardness. Used for special purposes like (non-industrial-purpose) knives, axles or punches.

Most steels with more than 1.2% carbon content are made using powder metallurgy. Note that steel with a carbon content above 2.0% is considered cast iron.

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