4140 Carbon steel round bar
4140 is a widely used medium carbon steel. A general purpose alloy, offering the right combination of strength, toughness and hardness with good machinability. 4140 can be quenched and tempered to a broad range of strength levels.
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4140 Carbon steel round bar
PRODUCT DETAILS
4140 carbon steel round bar is a type of high carbon, high-strength alloy steel round bar, belonging to a type of engineering steel. It contains high carbon and alloy elements, has excellent mechanical properties and wear resistance, and is usually used to manufacture parts and tools that require high strength and wear resistance.
4140 carbon steel round rod has the following performance characteristics:
High strength and hardness: Due to the high content of carbon and alloying elements, it has high tensile strength and yield point.
Wear resistance: Its hardness and strength make it have good wear resistance and can withstand large friction and wear.
Good toughness: not easily brittle or fractured under impact and vibration.
Good machinability: easy to cut and drill, with good welding and heat treatment performance.
Poor corrosion resistance: It is prone to rust in humid environments and requires surface treatment or coating protection.
Due to its high carbon and high strength characteristics, 4140 carbon steel round rods are mainly used for the following purposes:
Mechanical manufacturing industry: used to manufacture various mechanical parts that require high strength and wear resistance, such as gears, shaft parts, etc.
Construction industry: used to manufacture various building steel bars, brackets, etc.
Tool manufacturing industry: used to manufacture various tools, such as drill bits, taps, saw blades, etc.
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Product Name |
Carbon Steel Bar |
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Diameter |
5.0mm - 800mm |
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Length |
5800, 6000, or customized |
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Surface |
Black skin, Bright, etc |
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Material |
S235JR, S275JR, S355JR, S355K2, A36, SS400, Q235, Q355, C45, ST37, ST52, 4140, 4130, 4330, etc |
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Standard |
GB, GOST, ASTM, AISI, JIS, BS, DIN, EN |
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Technology |
Hot rolling, Cold drawing, Hot forging |
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Application |
It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts. |
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Shipment time |
Within 7-15 workdays after receiving deposit or L/C |
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Export packing |
Waterproof paper, and steel strip packed. Standard Export Seaworthy Package. Suit for all kinds of transport, or as required. |
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MOQ |
25 tons |
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Payment |
T/T L/C, Western Union,D/A,D/P etc. |
Chemical Composition
| Element | Content (%) |
|---|---|
| Chromium, Cr | 0.80 - 1.10 |
| Manganese, Mn | 0.75 - 1.0 |
| Carbon, C | 0.380 - 0.430 |
| Silicon, Si | 0.15 - 0.30 |
| Molybdenum, Mo | 0.15 - 0.25 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
| Iron, Fe | Balance |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
We can develop the most suitable material testing plan based on customer needs and standard requirements, including chemical composition analysis, physical property testing, mechanical property testing, etc.
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ABOUT US
Bao Steel (Qingdao) Co., Ltd. is a large-scale enterprise group focusing on steel production and raw material import and export trade, integrating trade, industry, logistics and services, covering an area of 60,000 m². After years of development, the business scope has expanded to the Middle East, Latin America, Australia, South Korea, Europe, Russia and even Africa. It has established a broad product sales and raw material procurement network at home and abroad, and sincerely provides customers with professional and thoughtful services. After development, the company already has a group of high-quality employees with professional knowledge and experience in production, trade, shipping, modern logistics and other fields. We will make full use of modern management and information technology to cultivate our unique core capabilities and provide high-quality, reliable value-added services and strong support to all sectors of society.
The company's main products include carbon steel plate/coil/pipe/rod, stainless steel plate/coil/pipe/rod, galvanized sheet/coil/pipe, color coated coils, corrugated sheet, rebar, wire rods and various types of materials. The company has sufficient inventory and complete varieties and specifications. Products are widely used in shipbuilding, petroleum, petrochemical, construction, electric power, natural gas, coal chemical industry, pressure vessels and other industries. In addition to independent production, we also sign annual agency sales contracts with major steel mills. The company has passed ISO9001 international quality management system certification and CE certification, and obtained 8 quality system certifications including provincial enterprise letter of credit, enterprise credit certificate, quality service certificate, and integrity management demonstration unit. Integrity, professionalism and efficiency are our service tenets. We wholeheartedly provide excellent products and high-quality services to new and old customers. We also welcome calls, letters and visits from customers to negotiate business and provide guidance.
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