2507 Stainless Steel Round Bar | 1.4410 SUS329J4L 022Cr25Ni7Mo4N Duplex Stainless Steel Round Bar

Super duplex structure, ultra high tensile & yield strength
Outstanding resistance to pitting, crevice and stress corrosion cracking
Dual production options: hot rolled black bar & cold drawn precision bright bar
Good fatigue strength and erosion corrosion resistance
Designed for harsh offshore, oil & gas and severe chemical environments

Product Overview

2507 Stainless Steel Round Bar is super duplex stainless solid round bar, equivalent grade 1.4410, SUS329J4L and 022Cr25Ni7Mo4N. It is manufactured to GB/T1220, ASTM A276, ASTM A484 and EN10088-3 standards. Available in hot rolled black surface bar for heavy machining and cold drawn bright & precision ground round bar for high-precision critical parts. Hot rolled diameter Φ16mm~Φ300mm, cold drawn Φ3mm~Φ120mm, tolerance up to ±0.01mm. Surface treatments include polishing, turning and peeling, standard lengths 3m,6m,12m. 2507 super duplex steel combines ferrite and austenite phase, has high mechanical strength and superior anti-corrosion performance, suitable for offshore oil & gas equipment, seawater desalination, chemical reactors, flue gas desulfurization and harsh corrosive working conditions.

Stainless Steel Round Bar

Chemical & Mechanical Property Snapshot

Item	Value
Grade	2507, Equivalent:1.4410/SUS329J4L/022Cr25Ni7Mo4N
C (Max)	0.03
Si (Max)	0.80
Mn (Max)	1.20
P (Max)	0.035
S (Max)	0.020
Cr	24.00~26.00
Ni	6.00~8.00
Mo	3.00~5.00
Yield Strength (MPa, Min)	550
Tensile Strength (MPa, Min)	795
Elongation (%)	15
Hardness HB (Max)	310

Detailed Technical Specifications

Item	Specification
Product Name	2507 Stainless Steel Round Bar
Material Type	2507 Super Duplex Stainless Steel
Shape	Solid Round Bar
Manufacturing Standards	GB/T1220, ASTM A276, ASTM A484, EN10088-3
Production Types	Hot-Rolled Black Surface Bar / Cold-Drawn Bright & Precision Ground Bar
Hot-Rolled Diameter Range	Φ16mm – Φ300mm
Cold-Drawn & Precision Ground Diameter Range	Φ3mm – Φ120mm
Precision Tolerance	Up to ±0.01mm
Standard Length	3m / 6m / 12m
Surface Treatment	Polishing, Turning, Peeling
Quality Documentation	Mill Test Certificate including heat number, chemical composition and mechanical test data
Packaging	Seaworthy export bundling to avoid scratching and deformation
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit

Dimension Specification Table

Item	Specification
Hot Rolled Black Surface Stainless Steel Round Bar Diameter	Φ16mm ~ Φ300mm
Cold Drawn & Precision Ground Bright Round Bar Diameter	Φ3mm ~ Φ120mm
Standard Available Length	3m / 6m / 12m
Custom Length	Accept customized fixed length according to client request
Dimensional Tolerance for Precision Ground Bar	Up to ±0.01mm
Surface Treatment Options	Polishing, Turning, Peeling / Skin Pass Machining

Product Comparison Table

Comparison Item	2507 Duplex Stainless Steel Round Bar	316L Stainless Steel Round Bar	Carbon Steel Round Bar
Material Base	Super Duplex Stainless Steel	Low Carbon Molybdenum Austenitic Stainless Steel	Mild & Medium Carbon Steel
Main Advantage	Ultra high strength, excellent stress & pitting corrosion resistance	Good chloride corrosion resistance, low carbon	Low cost, good mechanical strength
Typical Grades	2507 (1.4410/SUS329J4L)	316L (1.4404/SUS316L)	Q235B, Q355B, 20#,45#
Cross Section Shape	Solid cylindrical round bar	Solid cylindrical round bar	Solid cylindrical round bar
Precision Capability	Cold-drawn & ground bar tolerance up to ±0.01 mm	Cold-drawn & ground bar tolerance up to ±0.01 mm	Standard machining tolerance
Surface Options	Polished, turned, peeled, hot-rolled black finish	Polished, turned, peeled, hot-rolled black finish	Black hot-rolled, pickled, painted
Typical Applications	Offshore oil & gas, desalination, flue gas desulfurization equipment	Marine equipment, chemical reactor parts, pharmaceutical machinery	Mechanical shafts, construction structural frames
Recommended Buyer	Offshore, desalination and heavy corrosion industrial manufacturers	Marine, chemical and pharmaceutical equipment manufacturers	Construction & mechanical processing factories
Density	~7.80 g/cm³	~7.98 g/cm³	~7.85 g/cm³
Weldability	Requires special welding procedure	Excellent	Excellent

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Marine Environment Components

Food Equipment Mechanical Parts

Chemical Corrosion-Resistant Shaft Components

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What are equivalent grades of 2507 stainless steel round bar?

2507 equivalent grades are 1.4410, SUS329J4L and 022Cr25Ni7Mo4N.

What is the advantage of 2507 duplex stainless steel vs 316L?

2507 has much higher mechanical strength and far better resistance to stress corrosion cracking, pitting and crevice corrosion in severe chloride environments.

What are main applications of 2507 round bar?

It is used for offshore oil & gas components, seawater desalination, FGD systems and heavy corrosive chemical equipment.

What is MOQ for 2507 stainless steel round bar?

MOQ is 5 tons.

Does 2507 require special welding process?

Yes, duplex steel needs controlled welding procedure to maintain balanced ferrite and austenite phase structure.

Related Projects

Steel And Metal Materials Supplied To Projects Worldwide.

Learn More

Vietnam Binh Duong Foreign-Invested Industrial Park Project

A large-scale foreign-invested smart manufacturing industrial park was developed in Binh Duong Province, Vietnam. The project included three large-span steel structure workshops w…

Texas Commercial Warehouse & Logistics Center Project, USA

A large-scale e-commerce logistics center was constructed near Houston, Texas, USA, featuring a single-story large-span steel structure designed for modern warehousing and distribu…

Middle East Petrochemical EPC Project

A petrochemical EPC project in the Middle East involved the construction of new raw material storage tanks and shell-and-tube heat exchanger systems for an oil refining supporting …

2507 Stainless Steel Round Bar | 1.4410 SUS329J4L 022Cr25Ni7Mo4N Duplex Stainless Steel Round Bar