Reynolds Steel Industries

A stainless steel round bar is a long, cylindrical metal bar manufactured from corrosion-resistant stainless steel alloys. It is widely used in machining, construction, and manufacturing due to its strength, durability, and resistance to rust and chemicals.

Common Grades

• 304 stainless steel – General-purpose, excellent corrosion resistance
• 304L stainless steel – Better for welding applications
• 316 stainless steel – Superior resistance to chemicals and saltwater
• 410 stainless steel – Higher strength, moderate corrosion resistance

Key Properties

• Corrosion Resistance: Excellent in most environments
• Strength: High tensile and yield strength
• Machinability: Good, depending on grade
• Durability: Long service life with minimal maintenance
• Finish Options: Bright, black, polished, or turned

Standard Sizes

• Diameter: Typically ranges from 3 mm to 300 mm (or more)
• Length: Commonly 3 to 6 meters, or as per requirement

Manufacturing Process

• Hot rolled or cold drawn
• Peeled and polished for precision applications
• Heat treated (depending on grade)

Stainless Steel Round Bar – Description

Overview
A stainless steel round bar is a solid cylindrical metal product made from corrosion-resistant stainless steel alloys. It is widely used across industries due to its excellent strength, durability, and resistance to rust, heat, and chemicals.

Common Grades

• 304 stainless steel – Most commonly used, good corrosion resistance and formability

• 304L stainless steel – Ideal for welding applications

• 316 stainless steel – Superior resistance to chemicals and marine environments

• 410 stainless steel – High strength and hardness

Key Properties

• Corrosion Resistance: Excellent in atmospheric, chemical, and moisture-rich environments

• Mechanical Strength: High tensile and yield strength

• Durability: Long-lasting with low maintenance

• Machinability: Good, varies by grade

• Surface Finish: Available in bright, polished, black, or peeled finishes

Standard Specifications

• Diameter Range: Typically from 3 mm to 300 mm (or customized)

• Length: Usually 3–6 meters or cut-to-size

• Standards: ASTM A276, ASTM A479, EN, DIN

Manufacturing Process

• Hot rolled for larger diameters

• Cold drawn for tighter tolerances and smoother finish

• Heat treatment and surface finishing as required

Applications

• Engineering & Fabrication: Shafts, fasteners, pins

• Construction: Structural supports and reinforcements

• Automotive Industry: Axles and machined components

• Oil & Gas / Chemical Processing: Valves, pumps, fittings

• Food & Pharmaceutical: Hygienic and corrosion-resistant equipment

Advantages

• High resistance to corrosion and oxidation

• Strong and durable under heavy loads

• Easy to fabricate, weld, and machine

• Suitable for harsh and outdoor environments

Limitations

• Higher cost than mild steel

• Some grades may require specialized machining

• Not all grades perform well in highly saline conditions

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440C Stainless Steel Round Bars

Material: Stainless Steel 440C (High Carbon Martensitic Stainless Steel)
Form: Round Bar / Rod
Size: Custom diameters (commonly 6 mm – 200 mm) and lengths
Standard: ASTM A276 / ASTM A484 / IS 5522
Finish: Hot Rolled, Cold Drawn, or Polished

Description:
440C Stainless Steel Round Bars are high-carbon martensitic stainless steel bars known for their excellent hardness, wear resistance, and corrosion resistance. With high tensile strength and superior hardness after heat treatment, 440C is ideal for industrial components requiring precision, durability, and resistance to wear.

Key Features:

• High hardness and wear resistance (after heat treatment)
• Excellent corrosion resistance in moderate environments
• High tensile and yield strength
• Good machinability and polishability
• Can be heat treated to achieve desired mechanical properties

Applications:

• Bearings, shafts, and precision mechanical parts
• Knives, blades, and cutting tools
• Valves, fasteners, and bushings
• Industrial and engineering components requiring wear resistance

440C Stainless Steel Rolled Round Bars are high-carbon martensitic stainless steel bars manufactured through the rolling process, offering excellent strength, hardness, and wear resistance. This grade is widely used in applications where high mechanical performance and durability are critical.

Grade 440C is known for its ability to achieve very high hardness through heat treatment, making it suitable for precision components, tooling, and bearing applications. Rolled round bars provide improved structural integrity and are ideal for machining and further processing.

PH 13-8 Mo Round Bar – Description

PH 13-8 Mo Round Bar is a high-strength precipitation-hardening stainless steel product known for its excellent combination of strength, toughness, and corrosion resistance. This alloy contains chromium, nickel, molybdenum, and aluminum, which contribute to its superior mechanical properties and stability across a wide range of temperatures.

The material is supplied in solution-treated condition and can be heat-treated (aged) to achieve different strength levels while maintaining good ductility and toughness. It exhibits outstanding resistance to stress corrosion cracking and performs reliably in both aggressive and mildly corrosive environments.

PH 13-8 Mo round bars are widely used in critical applications where high strength and durability are required. Common industries include aerospace, petrochemical, marine, and nuclear sectors. Typical applications involve shafts, fasteners, valve components, fittings, and structural parts.

This alloy also offers good machinability and weldability compared to other high-strength stainless steels, making it a versatile choice for precision engineering components.

17-4 PH (Precipitation Hardening) Stainless Steel Round Bars are high-strength, corrosion-resistant bars designed for demanding engineering and industrial applications. This grade combines the benefits of stainless steel with exceptional mechanical properties achieved through heat treatment.

17-4 PH stainless steel contains chromium, nickel, and copper, which provide excellent hardness, strength, and resistance to wear and corrosion. It is widely preferred where high strength along with good corrosion resistance is required.

15-5 PH Stainless Steel Round Bar – Description

15-5 PH Stainless Steel Round Bar is a precipitation-hardening martensitic stainless steel designed to provide high strength, excellent toughness, and superior corrosion resistance. It is an improved version of 17-4 PH stainless steel, offering more uniform mechanical properties and enhanced transverse toughness due to its refined microstructure.

This alloy primarily contains chromium, nickel, and copper, along with controlled additions of other elements that help minimize delta ferrite formation. As a result, it delivers better ductility and improved performance in demanding applications. The material is typically supplied in the solution-annealed condition and can be aged to various conditions such as H900, H1025, H1075, and H1150 to achieve desired strength and hardness levels.

15-5 PH round bars exhibit excellent resistance to corrosion, comparable to 304 stainless steel, and good resistance to stress corrosion cracking. They also maintain reliable mechanical properties at moderately elevated temperatures.

These round bars are widely used in aerospace, marine, petrochemical, and engineering industries. Common applications include aircraft components, shafts, gears, valves, fasteners, and structural parts that require high strength and reliability.

In addition, 15-5 PH stainless steel offers good machinability and can be welded using standard techniques, making it suitable for precision manufacturing and critical service conditions.

UNS S20910 Stainless Steel Round Bars, commonly known as Nitronic 50, are high-performance austenitic stainless steel bars that offer an excellent combination of strength, corrosion resistance, and toughness. This grade is specially designed to provide higher strength than conventional stainless steels like 304 and 316 while maintaining superior resistance to corrosion and galling.

UNS S20910 is enriched with chromium, nickel, molybdenum, and nitrogen, which enhances its mechanical properties and resistance to pitting, crevice corrosion, and wear.

AISI 630 Round Bar (Bright) – UNS S17400 – Description

AISI 630 Round Bar, also known as UNS S17400 or 17-4 PH stainless steel, is a precipitation-hardening martensitic stainless steel that combines high strength, excellent corrosion resistance, and good mechanical properties. Supplied in bright finish, these round bars offer a smooth, polished surface with tight dimensional accuracy, making them ideal for precision applications.

This grade contains chromium, nickel, and copper as its primary alloying elements, which provide outstanding hardness and strength after heat treatment. The material can be aged at different temperatures (such as H900, H1025, H1150 conditions) to achieve a wide range of mechanical properties depending on the application requirement.

AISI 630 exhibits excellent resistance to corrosion in environments similar to 304 stainless steel, along with superior resistance to oxidation. It also offers good toughness and moderate resistance to stress corrosion cracking, especially in aged conditions.

These bright round bars are widely used in industries such as aerospace, marine, oil & gas, chemical processing, and power generation. Typical applications include shafts, pump components, valves, fasteners, gears, turbine parts, and structural components.

Additionally, AISI 630 round bars provide good machinability in the solution-treated condition and can be welded using conventional methods, making them a versatile and reliable material for engineering and industrial use.

Stainless Steel PH 13-8 Mo Bright Round Bars – Description

Stainless Steel PH 13-8 Mo Bright Round Bars are high-performance precipitation-hardening stainless steel products known for their exceptional strength, toughness, and corrosion resistance. Manufactured with a bright finish, these round bars feature a smooth, polished surface with precise dimensional accuracy, making them ideal for critical and precision-engineered applications.

PH 13-8 Mo is an iron-based alloy containing chromium, nickel, molybdenum, and aluminum, which together provide excellent mechanical properties and structural stability. The material is typically supplied in the solution-treated condition and can be age-hardened to various conditions such as H950, H1000, H1050, and H1150, allowing flexibility in achieving desired strength and hardness levels.

These bright round bars offer outstanding resistance to stress corrosion cracking and maintain good toughness even at high strength levels. They also perform well in both mildly and moderately corrosive environments, including marine and chemical exposure.

PH 13-8 Mo stainless steel is widely used in aerospace, petrochemical, nuclear, and defense industries. Common applications include shafts, fasteners, valves, fittings, aircraft components, and structural parts where high strength, reliability, and corrosion resistance are essential.

Additionally, these bars provide good machinability and weldability compared to other high-strength stainless steels, making them suitable for complex machining and fabrication processes.

Stainless Steel 440C Forged Bars (UNS S44004) are high-carbon martensitic stainless steel bars manufactured through forging processes to achieve superior strength, hardness, and wear resistance. These are widely used in precision engineering and tooling applications

Stainless Steel 410/420 Black Round Bar – Description

Stainless Steel 410 and 420 Black Round Bars are high-quality martensitic stainless steel bars with a black oxide or mill finish. These bars are known for their excellent hardness, strength, and moderate corrosion resistance. The black finish provides additional surface protection and improves wear resistance.

• Grade 410: Offers good corrosion resistance, high strength, and excellent machinability, suitable for applications requiring toughness and moderate corrosion resistance.

• Grade 420: Provides higher hardness and wear resistance compared to 410, making it ideal for precision engineering and components requiring sharp edges or high durability.

These round bars are available in various diameters and lengths and can be fabricated, machined, or hardened according to application needs. They are widely used in manufacturing tools, knives, shafts, automotive parts, fasteners, and industrial components where high strength, wear resistance, and moderate corrosion resistance are essential.

With their combination of strength, hardness, and surface protection, Stainless Steel 410/420 Black Round Bars provide a reliable and durable solution for industrial, engineering, and precision applications.