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ASTM round bars are cylindrical bars made from various materials and conforming to standards set by the American Society for Testing and Materials (ASTM). These bars are widely used in manufacturing, construction, and various engineering applications. Here’s a breakdown of key aspects of ASTM round bars:
### Specifications
1. **Materials:**   - ASTM round bars can be made from a variety of materials, including:     - **Carbon Steel:** Common grades include ASTM A36 and ASTM A992.     - **Alloy Steel:** Various alloy compositions for enhanced strength and toughness.     - **Stainless Steel:** Grades like ASTM A276 or ASTM A479 for corrosion resistance.     - **Titanium:** Grades such as ASTM B348 for lightweight and corrosion-resistant applications.     - **Nickel Alloys:** Such as ASTM B160 for high-temperature applications.
2. **Dimensions:**   - Available in a range of diameters, typically from 1/8 inch to several inches, with various lengths.   - Common tolerances are specified based on the ASTM standard applicable to the specific material.
3. **Finish:**   - Can come in various finishes, such as hot-rolled, cold-rolled, or polished, depending on the application.
### Applications
- **Manufacturing:** Used to produce components like shafts, axles, and fasteners.- **Construction:** Structural applications, including beams, columns, and supports.- **Automotive:** Components for vehicles that require high strength and durability.- **Marine and Aerospace:** Parts that need to withstand harsh environments and high stress.
### Key Standards
- **ASTM A36:** Standard specification for carbon structural steel.- **ASTM A572:** Standard specification for high-strength low-alloy columbium-vanadium structural steel.- **ASTM A276:** Standard specification for stainless steel bars and shapes.- **ASTM B348:** Standard specification for titanium and titanium alloy bars and rods.
### Considerations
- **Mechanical Properties:** Different ASTM standards specify different mechanical properties, such as yield strength, tensile strength, and hardness.- **Welding and Fabrication:** Some grades may require special considerations for welding and machining.
If you need specific information about a particular grade, dimensions, or applications, let me know!

ASTM B677 904L Round Bar refers to a round bar made from 904L stainless steel, which is a high-performance alloy designed for corrosion resistance in extreme environments. This alloy is covered under ASTM B677, which specifies the standard specification for high-corrosion-resistant nickel-chromium-molybdenum alloys.

904L Stainless Steel is an austenitic stainless steel that contains a high amount of nickel, chromium, and molybdenum, making it highly resistant to corrosion, particularly in acidic environments. The addition of copper enhances its resistance to strong reducing acids like sulfuric acid.

SMO 254 Round Bars are basically formed with austenitic stainless steel and also includes molybdenum contents. These bars are often known as UNS S31254 round bars. The presence of austenitic steel comprise allows superior resistance to pitting and crevice corrosion, soaring resistance to stress corrosion cracking.

317L Stainless Steel Round Bars resist corrosion in atmospheric and pure water environments, while high – alloyed grades can resist corrosion in most acids, alkaline solutions, and chlorine bearing environments, properties which are utilized in process plants.

Mild Steel Square Bar is a solid, square-shaped bar made from mild steel, also known as low-carbon steel. It is one of the most commonly used materials in construction, fabrication, and manufacturing due to its excellent weldability, formability, and cost-effectiveness. Mild steel square bars are used in a wide range of applications, including structural components, machinery, frameworks, and automotive parts.

UNS S31254 SMO 254 Round Rod is made from SMO 254 stainless steel, also known as UNS S31254. It is a super-austenitic stainless steel with exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC). This alloy is specifically designed for use in highly corrosive environments, such as seawater, chemical processing, and marine applications.

SS 15-5 PH Round Bar is made from 15-5 PH stainless steel, which is a precipitation-hardening stainless steel alloy. It combines the high strength and hardness of precipitation-hardened alloys with the corrosion resistance of austenitic stainless steels. 15-5 PH is widely used in aerospace, chemical processing, and other high-stress applications that require high strength and good machinability, coupled with excellent corrosion resistance.

SS 317L Round Bars are made from 317L stainless steel, which is a low-carbon version of the widely used 317 stainless steel alloy. SS 317L is an austenitic stainless steel known for its excellent corrosion resistance, particularly in chloride-rich environments such as marine and chemical processing applications. The lower carbon content in 317L reduces the risk of sensitization (which can cause intergranular corrosion), making it ideal for welding applications.

Stainless Steel 446 Round Bar is made from Grade 446 stainless steel, which is a high-chromium ferritic stainless steel. Known for its excellent oxidation resistance and high-temperature strength, Stainless Steel 446 is commonly used in severe environments where exposure to corrosive elements, high temperatures, and thermal cycling is expected. It is an ideal choice for high-temperature applications that require good resistance to oxidation, sulfidation, and high-stress environments.

Stainless Round Bar/Rod 440C is normally used for industrial, machine, and tool applications. 440C stainless provides maximum hardness and strength after heat treatment.

This Stainless Steel 316H Bar is actually austenitic stainless steel which bears molybdenum as one of its constituents. The content of nickel and molybdenum in this grade are higher due to which is shows increased resistance to corrosion.

15-5 is a variant of the older 17-4 chromium-nickel-copper precipitation hardening stainless steel. Both alloys exhibit high strength and moderate corrosion resistance. High strength is maintained to approximately 600 degrees F.

347 stainless is an austenitic stainless steel offering an excellent resistance to inter-granular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500O F.

Pump Shaft Stainless Steel Bar is a type of bar stock made from stainless steel that is specifically used for the manufacture of pump shafts. These shafts are crucial components in pumps, as they transmit mechanical energy from the motor to the pump impeller, ensuring efficient fluid movement. The use of stainless steel in pump shafts offers significant advantages in terms of corrosion resistance, strength, and durability, especially when handling fluids in aggressive environments such as water treatment, chemical processing, food and beverage industries, and marine applications.

SS 316L Round Bar is made from 316L stainless steel, which is a low-carbon version of the popular 316 stainless steel. The "L" in 316L stands for low carbon, meaning it has a reduced carbon content compared to standard 316, which enhances its resistance to intergranular corrosion and makes it ideal for welding applications. 316L is an austenitic stainless steel known for its excellent corrosion resistance, particularly in chloride-rich environments, making it widely used in industries such as marine, chemical processing, pharmaceutical, and food processing.

Stainless Steel Threaded Rods are long, straight rods with continuous threads running along their length. These rods are commonly used as fasteners or connectors in a variety of industrial, commercial, and construction applications where high strength, corrosion resistance, and durability are required. Stainless steel threaded rods are made from different grades of stainless steel depending on the environmental conditions and specific requirements for strength, machinability, and corrosion resistance.

Stainless Steel 304H Bar gets its desired dimensions and surface finish with thorough surface refinement process. Additionally, these are coated with SATIN and bright black polish that prevents from rusting mostly in the uncovered parts. These bars have improved corrosion and abrasion resistance.

17-4 PH Stainless Steel Round Bar is a high-strength precipitation-hardening (PH) stainless steel alloy, known for its excellent corrosion resistance, high strength, and good machinability. The "17-4" refers to its composition, which contains approximately 17% chromium and 4% nickel, along with additions of copper and manganese. This alloy is widely used in industries where both strength and resistance to corrosion are essential, such as aerospace, chemical processing, marine environments, and oil and gas applications.

Cold Drawn Steel Bar is a type of steel bar that has been processed through a cold drawing process, where the steel is pulled through a die to reduce its diameter and improve its surface finish without heating. This process increases the strength, hardness, and dimensional accuracy of the steel, making it ideal for applications requiring tight tolerances and a smooth, polished finish. Cold drawn bars are typically used in precision machining, automotive, construction, and manufacturing industries.

SS Threaded Rods (Stainless Steel Threaded Rods) are long, cylindrical rods made from stainless steel that have continuous threads running along their entire length. They are commonly used in construction, engineering, and manufacturing applications where strong, durable, and corrosion-resistant fastening is required. SS threaded rods are typically used to connect two or more components together, serving as a robust fastening solution in applications like structural support, machinery assembly, building foundations, and tensile strength applications.

MS Threaded Bars (Mild Steel Threaded Bars) are long, straight rods of mild steel (low carbon steel) that have external threads (screws) along their length. These bars are commonly used in construction, industrial, and mechanical applications where threaded connections are required. MS threaded bars are typically available in a variety of sizes and thread types, making them versatile for different uses such as bolting, fastening, and structural applications.

Stainless Steel 316Ti Round Bar is referred to as the stabilized grade of the 316 types, and also one of the two 316 stainless steels that is recommended for higher temperature situations. This grade contains a small amount typically only 0.5% of Titanium.

Stainless Steel 904L Rods is a non-stabilized low carbon high alloy austenitic stainless steel. SS 904L Round Bars is also resistant to stress corrosion cracking and crevice corrosion. SS 904L Bars is used extensively in the chemical process industry including the production of phosphate-based fertilizers.

The stainless steel 310 round bar is designed for high temperature applications. The alloy resists oxidation in continuous application processes where the temperatures can rise up to 1150 °C. ... These moist corrodents are in a temperature range lower than that which is normally considered as high temperature.

Duplex Steel UNS S32205 Rods possess certain silent characteristics such as high chloride stress corrosion cracking resistance, chloride cracking and ease of handling, high strength, good weldability and formability.

SS 321 Rod is made from 321 stainless steel, a titanium-stabilized version of 304 stainless steel. It offers excellent corrosion resistance and oxidation resistance at elevated temperatures, making it ideal for high-temperature applications, particularly in welding, aerospace, and chemical processing industries.

SS 430F Rod is made from 430F stainless steel, a free-machining grade of martensitic stainless steel that is specifically designed to offer excellent machinability and corrosion resistance in mild environments. The addition of sulfur to Grade 430 provides improved machinability, making 430F ideal for applications that require precision machining, such as fasteners, shafts, and threaded components.

317L Stainless Steel Rod is made from 317L stainless steel, which is an austenitic stainless steel alloy that is similar to 316L stainless steel but with a higher molybdenum (Mo) content. This increased molybdenum content provides superior resistance to pitting and crevice corrosion, making 317L a great choice for applications exposed to chloride environments, sulfuric acid, and other corrosive chemicals.

Duplex 2205 Round Bars are made from UNS S32205, a duplex stainless steel alloy that combines the properties of both austenitic and ferritic stainless steels. Duplex 2205 is known for its high strength, excellent corrosion resistance, and improved stress corrosion cracking resistance compared to single-phase alloys like 304 and 316. This makes it an ideal material for applications in industries like chemical processing, oil and gas, marine, and construction.

17-4 PH Round Bar is made from 17-4 PH stainless steel, a precipitation-hardening alloy that combines the benefits of high strength, corrosion resistance, and excellent fatigue and wear resistance. The "PH" in the name stands for precipitation hardening, which refers to the heat treatment process that enhances the material's mechanical properties.

Stainless-steel bar or rod is used in various applications and is widely used in the construction industry due to its durability and resistance to corrosion and rust. ... 303 - has good corrosion resistance, free machining, not suitable for welding or forming.

Stainless Steel 316 Round Bar is made up of a stainless steel that is austenitic. The material has chromium, nickel and molybdenum in its composition. The molybdenum content makes the Stainless Steel 316 Round Bar products to be more corrosion resistant than the 304 grade of stainless steel.

Stainless Steel 316 Round Bar is made up of a stainless steel that is austenitic. The material has chromium, nickel and molybdenum in its composition. The molybdenum content makes the Stainless Steel 316 Round Bar products to be more corrosion resistant than the 304 grade of stainless steel.

904L Stainless Steel Round Bar is a high-combination austenitic stainless steel with low carbon content. The evaluation is expected for use under extreme destructive conditions. It has been application demonstrated over numerous years and was initially created to oppose erosion in weaken sulfuric corrosive.

The stainless steel 310 round bar is designed for high temperature applications. The alloy resists oxidation in continuous application processes where the temperatures can rise up to 1150 °C. ... These moist corrodents are in a temperature range lower than that which is normally considered as high temperature.

Stainless Steel 321H Round Bar is a high-carbon version of the austenitic stainless steel grade 321, designed to provide excellent resistance to oxidation and high-temperature corrosion, particularly in the 800-1600°F (427-871°C) range. The addition of titanium to the alloy stabilizes it against carbide precipitation, making it suitable for use in elevated temperature applications where intergranular corrosion is a concern. 321H round bar is commonly used in applications such as heat exchangers, furnaces, aircraft exhaust systems, and other high-temperature industrial equipment. It offers superior mechanical properties, excellent weldability, and resistance to both thermal fatigue and stress corrosion cracking, making it a reliable choice for critical components in industries like aerospace, chemical processing, and power generation.

304 Stainless Steel Rod is made from 304 stainless steel, one of the most widely used austenitic stainless steel grades. Known for its excellent corrosion resistance, formability, and weldability, 304 stainless steel is suitable for a variety of applications across multiple industries. This alloy is particularly known for its resistance to oxidation and corrosion in mild environments, making it a popular choice for applications in food processing, medical devices, construction, and automotive components.

It seems like you may have meant SS 316 or SS 304, as SS 306 is not a standard designation for stainless steel. However, I can provide information on SS 306 if that’s a typo, or I can share details for SS 316 or SS 304 if that's what you were referring to. Here’s some general information about SS 306 and more common grades like SS 304 and SS 316

Hexagon stainless steel rods are versatile materials commonly used in various applications, including construction, manufacturing, and automotive industries. They feature a hexagonal cross-section, which provides good grip and strength for machining and fabrication processes. 
Key characteristics include:
1. **Corrosion Resistance**: Made from stainless steel, these rods resist rust and corrosion, making them ideal for outdoor and marine applications.
2. **Strength**: They offer high tensile strength, making them suitable for structural applications.
3. **Machinability**: Hexagonal shapes allow for easy gripping and handling in machining processes.
4. **Applications**: Commonly used for bolts, nuts, and fittings, as well as in the production of specialized machinery components.
If you have specific questions about sizes, grades, or uses, let me know!

316 Stainless Steel Rod is made from 316 stainless steel, which is an austenitic stainless steel alloy known for its superior corrosion resistance, especially in chloride environments. This grade is one of the most widely used stainless steels in applications where resistance to corrosion and high strength are essential. Due to its enhanced molybdenum content, 316 stainless steel is highly resistant to pitting and crevice corrosion, making it ideal for marine, chemical, and pharmaceutical applications.