High quality 4340 4140 hot rolled alloy steel round bar/cold drawn alloy steel bar/alloy steel bright bar
Carbon Steel Bar - Flat bar, Hex bar, Round bar, Square bar
Carbon steel bar is stocked in flat bar, hex bar , round bar ,square bar and alloy bar at Future Metal. Carbon steel is ideal for many industrial products and applications where strength and durability are required. Characteristics of carbon steel bars are based on the carbon content. Increased carbon content will raise carbon steel’s hardness and strength. Inversely, lower carbon content results in a softer (mild) carbon steel that is easier to machine and weld.
Specifications of alloy steel bar
| Through-Hardening Alloy Steel | |
| Standard | A434M, BS 970, AS1444 or equivalent. |
| Size Range (mm) | 16 to 500 (diameter). |
| Grades | 4140, 4340, En25, En26 & Hytuf. |
| Finishes | As Rolled or Turned. |
| Condition | Refer below. |
| Processing (mm) | Bar cutting to 650 diameter. |
| Case-Hardening Alloy Steel | |
| Standard | A434M, BS 970, AS1444 or equivalent. |
| Size Range (mm) | 16 to 500 (diameter). |
| Grades | 8620, En36A & En39B. |
| Finishes | As Rolled or Turned. |
| Condition | Refer below. |
| Processing (mm) | Bar cutting to 650 diameter. |
Steel Market Conditions
High Tensile Strength Steels
For applications requiring higher tensile strengths and toughness than the carbon steels there is a range of low alloy steels. These are categorised as high tensile or constructional steels and case hardening steels. The high tensile strength steels have sufficient alloying additions enabling through hardening (by quench and temper treatment) according to their alloying additions.
Case Hardening (carburising) Steels
Case hardening steels are a group of low carbon steels in which a high hardness surface zone (hence the term case hardened) is developed during heat treatment by absorption and diffusion of carbon. The high hardness zone is supported by the unaffected underlying core zone, which is lower hardness and higher toughness.
Plain carbon steels that can be used for case hardening are restricted. Where plain carbon steels are used, the rapid quenching necessary to develop satisfactory hardness within the case can cause distortion and the strength that can be developed in the core is very limited. Alloy case hardening steels allow the flexibility of slower quenching methods to minimise distortion and high core strengths can be developed.
Nitriding Steels
Nitriding steels can have higher surface hardness developed by absorption of nitrogen, when exposed to a nitriding atmosphere at temperatures in the range of 510-530°C, after hardening and tempering.
High tensile steels suitable for nitriding are: 4130, 4140, X4150 & 4340.
| Grade | Description and Typical Application |
| 4140 | General purpose high tensile Cr-Mo low alloy steel, widely used for axles, shafts, studs and bolts, gears and drill rods.The steel is usually supplied pre-hardened, but can be flame or induction surface hardened or nitrided. |
| 4340 | General purpose high tensile Ni-Cr-Mo low alloy steel with higher strength and able to be hardended through larger sections compared to 4140.Used in highly stressed shafts in larger sizes, heavy truck and tractor axles and transmission shafts.Supplied pre-hardened but with further re-hardening or surface hardening possible. |
| En25 | En25 is used extensively in most industry sectors for applications requiring higher tensile and yield strength than 4140 can provide, similar to En26 but with lower carbon content. |
| En26 | Characterised by high strength and toughness in very large sections, similar to En25 but with a higher carbon content. En26 is used extensively in most industry sectors for applications requiring higher tensile strength and yield strength than 4140, 4340 or En25 can provide. |
Types of Carbon Steel Round Bars
| ASTM A105 carbon steel round bars | Hot rolled carbon steel bright bars | cold rolled carbon steel hex bars |
| ASTM A350 LF2 carbon steel round bars | Hot rolled carbon steel square bars | cold rolled carbon steel flat bars |
| AISI 1018 carbon steel round bars | Hot rolled carbon steel hex bars | astm a572 grade 50 carbon steel bars |
| AISI 1045 carbon steel round bars | Hot rolled carbon steel flat bars | AISI 1018 bars |
| AISI 8630 carbon steel round bars | cold rolled carbon steel round bars | AISI 1045 bars |
| ASTM A36 carbon steel bars | cold rolled carbon steel bright bars | AISI 8630 bars |
| Hot rolled carbon steel round bars | cold rolled carbon steel square bars | ASTM A350 LF2 bars |
| EN series bars | 1018 cold rolled steel | 1095 steel bar stock |
| 1095 steel bar stock | sae 1020 bar stock | a572 round bar |
Other specifications, grades and standards of carbon steel bars can be sent to us, support customization, contact us for the largest discount wholesale price, the factory has stock, fast shipping!
Alloy steel bar for sale & Wholesale steel bar price
Our factory has more than 30 years of production and export experience, exporting to more than 50 countries and regions, such as the United States, Canada, Brazil, Chile, the Netherlands, Tunisia, Kenya, Turkey, the United Arab Emirates, Vietnam and other countries. With a fixed production capacity value every month, it can meet the large-scale production orders of customers. Now there are hundreds of customers with fixed large-scale annual orders. If you want to buy steel bar ,alloy steel rod, steel deformed bar , steel sheet, carbon steel plate/sheet,carbon steel coil,pickled coil, tinplate coil &sheet,crgo coil,welded pipe/tube,square hollow sections pipe/tube,rectangular hollow sections pipe/tube, low carbon steel pipe, high carbon steel tube ,rectangular pipe, carton steel rectangular pipe,square tube, alloy steel pipe, seamless steel pipe, carbon steel seamless tube,steel coils, steel sheets ,precision steel tube,and other steel products, contact us to provide you with The most professional service, save your time and cost !
Our factory also sincerely invites regional agents in various countries. There are more than 60 exclusive steel plate, steel coil and steel pipe agents. If you are a foreign trading company and are looking for the china top suppliers of steel bar/rod (alloy steel bar & steel deformed bar/rod & round bar&flat bar/square bar, steel plate/sheet (carbon steel sheet & stainless steel sheet& hot rolled sheet & cold rolled plate), steel coil(carbon steel coil & stainless steel coil & cold roll steel coil & hot rolled steel coil ) and steel pipes , please contact us. To provide you with the most professional and high-quality products in China to make your business better and better !
Our factory has the most complete steel product production line and the strictest product testing process to ensure a 100% product pass rate; the most complete logistics delivery system, with its own freight forwarder, saves you more transportation costs and guarantees 100% of the goods. perfect packaging and arrival. If you are looking for the best quality steel bar/steel rod, steel sheet, steel coil, steel pipe manufacturer in China, and want to save more logistics freight, please contact us, our professional multilingual sales team and logistics transportation team will provide you with the best Steel product service to ensure you receive a 100% quality guaranteed product !
Get the best quotation for steel bar/steel rod: you can send us your specific requirements and our multilingual sales team will provide you with the best quotation! Let our cooperation start from this order and make your business more prosperous !
factory wholesale 1018 cold rolled steel bar lo...
