Carbon steel is a special type of steel that, as the name suggests, has a higher concentration of carbon than other types of steel . Most types of steel have a relatively low carbon content of about 0.05% to 0.3%. In
comparison, carbon steel has a carbon content of up to 2.5%.
High Carbon Steel Fasteners have a carbon content that ranges between 0.60 - 1.25%. The alloy of high carbon steels has a manganese content in the range of 0.30 - 0.90%. Amongst all the three grades, High carbon steel
threaded rods have the highest hardness and toughness properties while exhibiting the lowest ductility.
Carbon steel combines iron and carbon, where as stainless steel combines iron with chromium, as well as nickel, which increases resistance to corrosion. There are many types and sizes available. Carbon steel grade bolts manufactured
by us are mentioned below. These are used in general engineering and where there is low load applicable.
Roll-fast has decades of experience working with carbon steel alloys, machining high-precision custom carbon steel machined products. We provide advanced machining and secondary services, including CNC, multi-spindle Automate
to manufacture carbon steel turned parts, components, and fittings. Our precision carbon steel machining capabilities offer highly customized part solutions that can be precisely shaped to meet your specifications while
achieving stringent tolerances on form, dimension, and surfaces.
Carbon Steel Alloys Available
Roll-Fast has experience machining high-quality, ultra-precise parts and products from a variety of carbon steel alloys, including the following:
- 12L14 - This a leaded steel that is great for machining. Machinable and reduces tooling wear.
- 12L15 - Leaded steel and also a great option for increased machinability and reduced tool wear.
- AISI 1117 - Good option for hardenability. Suited for parts that need to be heat treated due to the addition of manganese.
- AISI 1018 - This material is great for carburized parts and has great weldability.
- AISI 1045 - Great for bolts, nuts, axels. It is a medium carbon steel and does not do well with hot dip galvanizing.
- AISI 1141 - For surface hardening, this material is one of the best. It can be treated to a greater surface hardness then 1045 or 1018.
- AISI 1144 - Good for machining. Not very good for welding.
If you need a part machined from a type of steel or any other metal not mentioned, please contact us. We love a challenge.
Types of carbon steel and their properties
Carbon Steel can be segregated into three main categories: Low carbon steel (sometimes known as mild steel); Medium carbon steel; and High carbon steel.
Low-carbon steel
Low-carbon steel is the most widely used form of carbon steel. These steels usually have a carbon content of less than 0.25 wt.%. They cannot be hardened by heat treatment (to form martensite) so this is usually achieved
by cold work.
Carbon steels are usually relatively soft and have low strength. They do, however, have high ductility, making them excellent for machining, welding and low cost.
High-strength, low-alloy steels (HSLA) are also often classified as low-carbon steels, however, also contain other elements such as copper, nickel, vanadium and molybdenum. Combined, these comprise up to 10 wt.% of
the steel content. High-strength, low-alloy steels, as the name suggests, have higher strengths, which is achieved by heat treatment. They also retain ductility, making them easily formable and machinable. HSLA
are more resistant to corrosion than plain low-carbon steels.
Medium-carbon steel
Medium-carbon steel has a carbon content of 0.25 – 0.60 wt.% and a manganese content of 0.60 – 1.65 wt.%. The mechanical properties of this steel are improved via heat treatment involving autenitising followed by quenching
and tempering, giving them a martensitic microstructure.
Heat treatment can only be performed on very thin sections, however, additional alloying elements, such as chromium, molybdenum and nickel, can be added to improve the steels ability to be heat treated and, thus, hardened.
Hardened medium-carbon steels have greater strength than low-carbon steels, however, this comes at the expense of ductility and toughness.
High-carbon steel
High-carbon steel has a carbon content of 0.60– 1.25 wt.% and a manganese content of 0.30 – 0.90 wt.%. It has the highest hardness and toughness of the carbon steels and the lowest ductility. High-carbon steels are very wear-resistant
as a result of the fact that they are almost always hardened and tempered.
Tool steels and die steels are types of high-carbon steels, which contain additional alloying elements including chromium, vanadium, molybdenum and tungsten. The addition of these elements results in the very hard wear-resistant
steel, which is a result of the formation of carbide compounds such as tungsten carbide (WC).
Carbon steel grades of steel are generally used in manufacturing low carbon steel bolts and nuts mentioned above in the above standards, grades up to 6.8 are in non heat treated condition where as bolts from 8.8 and above are heat
treated to provide them with extra strength. Sometimes steel additions like Chromium and molybdenum are added in the steel to provide the correct strength required as per high tensile grades.
We manufacture and export the entire range of carbon steel bolting used in engineering and the construction industry all over the world. These are also high tensile bolts and nuts and the popular standards like 8.8 and 10.9 grade
are manufactured in our factory in India. We produce and export over 200 tons of high tensile fasteners to middle east and Europe. We also manufacture mild steel bolts and nuts, 4.6 grade bolts and nuts, 8.8 grade nut bolts,
10.9 grade bolts and nuts, carbon steel bolts nuts, nut bolt.
