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Your Professional Stainless Steel Bars & Rods Manufacturer

Lork Group specializes in supplying stainless steel rods and bars. Common materials include 17-4ph, 15-7ph, 13-8ph, Nitronic 40,AL-6XN, 310s, and 321 etc. Our stock complies with ASTM, AISI, AMS, JIS, GB, and other relevant standards. These rods are commonly used in aerospace, medical, and industrial applications. We stock rod sizes ranging from Ø4 mm to Ø600 mm and offer custom processing from billets into square rods, round bars, and related castings. Best of all, we support SGS third-party testing!

316L Mod Stainless Steel Bar
When you encounter 316L Mod, it means you are facing a typical engineering dilemma: ordinary 316L cannot withstand the test, but going directly to super austenitic stainless steel (such as 904L) is
Al-6XN Stainless Steel Bar (UNS N08367, ASTM B688）
Please focus on the core issue: purchasing Al-6XN stainless steel rods is essentially about acquiring the king of resistance to chloride ion pitting and crevice corrosion within the existing
UNS K93120 Maraging 300 Steel
Lork Group has UNS K93120 Maraging 300 steel in stock in various specifications. We offer custom machining services, fast quotes, and expedited delivery. Please email your requirements to
Medical Grade Stainless Steel Rex 734 / 1.4472
Lork Group is a leading global exporter and supplier of Medical Grade Stainless Steel Rex 734 (1.4472), a high-performance alloy specifically engineered for surgical, dental, and medical device
AMS 5617 / Stainless Steel Grade Custom 455 Round Bar
AMS 5617 Custom 455 Stainless Steel Round Bar - premium age-hardenable alloy for aerospace & medical applications. High strength (1930 MPa) with excellent corrosion resistance. Contact us today for
Nitronic 40 (AMS 5656 / AMS 5595) Round Bar
Lork Group is a trusted supplier of high-quality Nitronic 40 (AMS 5656 / AMS 5595) round bar, providing premium austenitic stainless steel for aerospace, chemical processing, and cryogenic
310S Stainless Steel
310S stainless steel is an austenitic heat resistant alloy with excellent oxidation resistance under mild cycling conditions up to 1024°C. 310 stainless steel is a long-term stock product of Lork
AMS 5659 15-5PH Stainless Steel Bar
AMS 5659 specification covers a corrosion-resistant steel in the form of bars, wire, forgings, flash welded rings, extrusions, and stock for forging. 15-5PH stainless steel is a martensitic,
AMS 5848 Nitronic 60 Stainless Steel Bar
AMS 5848 specification covers a Nitronic 60 Stainless Steel in the form of bars, wire, forgings, extrusions, mechanical tubing, flash welded rings, and stock.
A286 Stainless Steel Cold Reduced Bar
A286 cold-reduced nickel bar 15%-17% is typically used in fastener applications requiring room temperature minimum tensile strength of 160 ksi and for use at temperatures up to 1000° F and requiring
316LVM Surgical Steel
316LVM is a high-purity, medical-grade stainless steel optimized for corrosion resistance, strength, and biocompatibility. Its use in critical medical applications underscores its reliability, though
1.4472 Stainless Steel
1.4427 Stainless Steel offers better tensile strength, wear resistance, resistance to pitting and crevice corrosion than the 316LVM grade. Obtained through slag remelting, this grade contains no

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Custom Stainless Steel Bars & Rods

We provide custom stainless steel bar manufacturing solutions to meet your project needs. Customizable Options:

Material Grade:

17-4ph,15-7ph, CD4MCuN,15-5ph,Nitronic 60,316lvm

Size:

Diameter: Ф4mm - Ф600mm， Customizable upon request.

Shape:

Square rod, round rod, hexagonal rod, round cake, rolling ring can be customized upon request.

Availability:

Solid solution state, aging state, precipitation hardening state, return state, etc.

Types Of Stainless Steel Bars & Rods

1. Ferritic Stainless Steel

● Chromium-based, typically with carbon content at under 0.1%

● Increased resistance to aggressive environmental conditions

● Increased resistance to stress corrosion cracking (SCC)

● More susceptible to intergranular corrosion

● Brittle at very low temperatures

● Most often used in fairly thin sheets or tubing, as welds aren't especially tough

2. Austenitic Stainless Steel

● Among the most common variants, used in a wide range of applications

● Weldable and formable, due to their chemical makeup of manganese, nickel, and nitrogen

● Balances moderate strength, hardness (can't be heat-treated but can be 'work-hardened'), ductility, ty, and toughness

● Relatively vulnerable to SCC unless nickel content is increased

● Pitting and crevice corrosion resistance (CCR) can be enhanced with higher molybdenum content

3. Martensitic Stainless Steel

● Higher carbon levels than ferritic alloys, allowing for tempering (hardness treatment)

● Higher strength, but lower corrosion resistance than most other stainless types

● Not especially formable or weldable

● More often used in stainless steel rods, bars, and other long products, as opposed to sheet materials

4. Duplex Stainless Steel

● A mixture of ferritic and austenitic types; stronger than either on its own

● Resistant to SCC

● More vulnerable to IGC at higher alloy grades

● Moderately formable

5. Precipitation Hardening Stainless Steel

● Can be manufactured to very high strengths with the addition of aluminium, niobium,bium, and copper

● Relatively machinable without significant distortion

● Can either be more or less corrosion resistant than other types, depending on additives, but higher resistance incurs considerably higher costs

Stainless Steel Bars & Rods Specification

Dimensions	EN, DIN, JIS, ASTM, BS, ASME, AISI
HexBar Millimeters	18mm – 57mm (11/16″ to 2-3/4″)
Round Bars Diameter	Outside Diameter in the range of 4mm to 500mm
Bright Bars Diameter	Outside Diameter in the range of 4mm to 100mm
Square Bars In Millimeters	18mm – 47mm (11/16″ to 1-3/4″)
Finish	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Length	1 to 6 Meters, Custom Cut Lengths
Flat Bars In Millimeters	1/2" to 10" in thickness range of 2mm to 150mm,
Form	Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging, Etc.
Dimensions	EN, DIN, JIS, ASTM, BS, ASME, AISI

Stainless Steel Bars & Rods Chemical Composition

Element	Weight%
C	0.035 max
Mn	2.0 max
Si	1.0 max
P	0.045 max
S	0.030 max
Cr	18.0 - 20.0
Ni	8-13
Mo	-

Stainless Steel Bars Mechanical Properties

Density	7.9 g/cm³
Melting Point	1402 °C (2555 °F)
Tensile Strength	Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset)	Psi – 30000 , MPa – 205
Elongation	40 %

Stainless Steel Bars & Rods Material

Stainless Steel

Duplex Stainless Steel

Precipitation Hardening Stainless Steel

300 Series Stainless Steel

Other Stainless Steel

UNS S31803

UNS S32750

UNS S32205

UNS S32760

CD4MCuN

Zeron 100

Ferralium 255

17-4PH

17-7PH

PH13-8mo

15-5PH

PH 15-7mo

AISI 316

AISI 316L

AISI 304

AISI 304L

AISI 301

AISI 309

AISI 310

AISI 310S

AISI 321

AISI 306

AISI 347

AISI 347H

Nitronic 30

Nitronic 40

Nitronic 50

Nitronic 60

254SMO

AL-6XN

904L Stainless Steel

Types of Stainless Steel Bar Finishes

Brushed finishes offer a subtle luster that features a distinctive pattern made up of parallel lines, giving it a decorative look that isn't too glittery.

Matte finish has a dull appearance and is therefore often used where aesthetics are not an issue or where further finishing is required.

Mirror finishes are made by polishing stainless steel, making it extremely reflective. This finish masks surface damage, makes cleaning easier, and enhances appearance, so it is used for such things as column covers, ornamental trim, reflectors, steel mirrors, and wall paneling.

Stainless Steel Rod Production Process

Melting

The raw materials are subjected to 8 to 12 hours of high temperatures in an electric furnace. The molten metal is poured into molds and cast into various shapes. At this stage, the stainless steel bar is present in semi-finished form.

Forming

If needed, the semi-finished metal will undergo more forming processes. In this process, the tolerances are decided. The stainless steel bar will then be hot rolled. The thickness and other specifications of the metal can also be adjusted during this process.

Heat-Treating

After the formation is complete, heat-treatment, or annealing, begins. Annealing helps soften the stainless steel bar while reducing internal tension.

Descaling

After annealing, the surface of the stainless steel develops scales. Pickling and electro-cleaning are used to remove these scales. Both effective means of descaling, pickling involve dipping the material in nitric-hydrofluoric acid. Whereas electro-cleaning uses a cathode and phosphoric acid to pass a current onto the surface of the stainless steel. Depending on the final product, the stainless steel bar might be subjected to hot and cold rolling as well.

Repetition

After the hot and cold rolling process is conducted, the annealing and descaling process will be repeated. On completion of the final descaling process, the product will be cold-rolled. This is the final step in stainless steel fabrication.

Cutting

Once fabrication is complete, the stainless steel bar can be cut to the desired sizes. The product will be trimmed, sheared, and sawn. Nibbling can also be used to fabricate irregular shapes. Apart from the traditional methods of cutting metal, flame-cutting, plasma jet cutting, and waterjet cutting may also be used. The employment of these processes depends on the properties of the stainless steel bar, end-use, and required finish.

Cleaning

Before polishing, the stainless steel bar is thoroughly cleaned to prepare the surface.

Polishing

With different grades available, the chosen grade will vary according to the final use of the product. Through annealing, cold or hot-rolling, wire-brushing, pickling, etc., various finishes are obtained. Reflective and mirror-like finishes are possible when the surface is polished with different grades of abrasives and then buffed.

Application of Stainless Steel Bars

Construction Industry

In the construction industry, stainless steel bars are often used in areas that demand strength and corrosion resistance. Their application is particularly common in coastal and high-corrosion environments where other materials would degrade quickly.

Automotive Industry

Stainless steel bars find specific applications within the automotive industry, particularly in components requiring resistance to corrosion and heat.

Aerospace Industry

Stainless steel bars are extensively used in aerospace applications due to their exceptional strength-to-weight ratio, corrosion resistance, and ability to withstand high temperatures. They are often used in engine components, fasteners, and landing gear parts.

Medical Equipment

Stainless steel bars are widely employed in the manufacture of medical equipment, primarily because of their excellent corrosion resistance and biocompatibility. These bars are used in surgical instruments, implants such as pins and screws, and various types of medical support equipment.

Quality Inspection Procedures

Spectrometer

Ultrasonic Testing

Stress Corrosion Testing

Microcopy

Mechanical

Eddy Current Test

Heat Treatment Furnace

Corrosion Test

Hydraulic Test

Metallographic Test

FAQ

Q: Can you provide processing services?

A: Yes, we also provide processing services to our customers. It is one of our goals to provide specialized services such as bending, water cutting, laser cutting, digging holes, welding, slitting of coils, and other fabrications according to the drawings.

Q: How do you control product quality?

A: From the selection of raw materials to transportation and packaging, every production process will be tested and evaluated. Only products that have passed all tests can be delivered for export.

Q: How can l quickly get the price list?

A: Directly send us an email with a detailed specification, and you will get the official price list in 1 hour.

Q: How is the hardness of stainless steel bars determined?

A: It can be determined through hardness testing methods like the Rockwell hardness test or the Brinell hardness test.

Q: How is the corrosion resistance of stainless steel bars measured?

A: It can be measured through tests such as salt spray tests and electrochemical impedance spectroscopy.

Q: What is a stainless steel bar?

A: Stainless steel bar is a metal alloy that contains at least 10.5% chromium and enough nickel to make it hardenable.

We're well-known as one of the leading stainless steel bars manufacturers in China. Please feel free to buy cheap stainless steel bars for sale here and get pricelist from our factory. For price consultation, contact us.

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