S31500 Duplex Stainless Steel Bar

S31500 (EN 1.4417) Duplex Stainless Steel Bar is a nitrogen-alloyed duplex grade combining high mechanical strength with excellent resistance to corrosion and stress corrosion cracking.
Compared with conventional austenitic stainless steels, UNS S31500 bars provide higher yield strength, allowing for lighter structural designs and improved cost efficiency.

These duplex stainless steel bars are widely used in demanding industrial applications where both strength and corrosion resistance are critical.

Specifications of UNS S31500 Bar:

Specifications	ASTM: A276
Grade	S31803,S31500,etc.
Length	1000 mm – 6000 mm or as requested
Diameter Range	10 mm – 200 mm (custom available)
Technology	Hot Rolled / Forged / Cold Drawn
Surface Finish	Bright, Peeled, Polished, Turned, Pickled
Form	Round, Square, Flat, Hexagonal

 

UNS S20910 bar Equivalent Grades:

UNS	DIN
S1500	1.4417

Chemical Composition 1.4417 Duplex Steel Bar:

C	Cr	Mo	Mn	Ni	P	S	Si	N
0.03	21.0-23.0	2.5-3.5	1.2-2.0	4.5-6.5	0.030	0.030	1.0	0.05-0.20

 

Mechanical Properties Of S31500 duplex bar:

Property	Metric Value	Unit
Tensile Strength (Rm)	≥ 650	MPa
Yield Strength (Rp0.2)	≥ 450	MPa
Elongation (A)	≥ 25	%
Hardness (HB)	≤ 290	HBW

 

Applications Of S31500 duplex bar:

• Oil & Gas Equipment
  Used for shafts, connectors, and structural components requiring high strength and resistance to chloride-induced corrosion.

• Offshore & Marine Engineering
  Ideal for marine structures, mooring components, and seawater-exposed parts due to excellent stress corrosion cracking resistance.

• Chemical Processing Industry
  Applied in reactors, agitator shafts, and support components exposed to corrosive chemicals.

• Pressure Vessels & Mechanical Parts
  Suitable for high-pressure components where both strength and corrosion resistance are critical.

• Pump, Valve & Flange Manufacturing
  Commonly used for valve stems, pump shafts, and forged components in aggressive service environments.

• Fasteners & Structural Components
  Used for bolts, studs, and high-load structural parts requiring superior mechanical properties.

Key Features of 1.4417 steel round bar:

• High yield and tensile strength (approximately twice that of 304/316)

• Excellent resistance to pitting and crevice corrosion

• Good resistance to chloride-induced stress corrosion cracking

• Balanced austenitic–ferritic microstructure

• Good machinability and weldability

• Lower nickel content for cost-effective performance

 

FAQ

Q1: Is S31500 equivalent to EN 1.4417?
Yes. UNS S31500 corresponds to EN 1.4417 in European standards.

Q2: What is the main advantage of S31500 duplex bar?
It offers higher strength and better stress corrosion cracking resistance compared to standard austenitic stainless steels.

Q3: Can S31500 bars be machined?
Yes, with proper tooling and cutting parameters, S31500 duplex stainless steel bars are suitable for machining.

Q4: Is S31500 suitable for marine applications?
Yes, it performs well in chloride-containing environments such as marine and offshore conditions.

Why Choose SAKYSTEEL :

Reliable Quality – Our stainless steel bars, pipes, coils, and flanges are manufactured to meet international standards such as ASTM, AISI, EN, and JIS. Strict Inspection – Every product undergoes ultrasonic testing, chemical analysis, and dimensional control to ensure high performance and traceability. Strong Stock & Fast Delivery – We maintain regular inventory of key products to support urgent orders and global shipping. Customized Solutions – From heat treatment to surface finish, SAKYSTEEL offers tailor-made options to match your exact requirements. Professional Team – With years of export experience, our sales and technical support team ensures smooth communication, quick quotations, and full documentation service.

SAKY STEEL'S Quality Assurance (including both Destructive and Non-Destructive) :

1. Visual Dimension Test 2. Mechanical examining like tensile, Elongation and reduction of area. 3. Impact analysis 4. Chemical examination analysis 5. Hardness test 6. Pitting protection test 7. Penetrant Test 8. Intergranular Corrosion Testing 9. Roughness Testing 10. Metallography Experimental Test

Custom Processing Capabilities:

• Cut-to-size service

• Polishing or surface conditioning

• Slitting into strips or foil

• Laser or plasma cutting

• OEM/ODM welcome

SAKY STEEL supports custom cutting, surface finish adjustments, and slit-to-width services for N7 nickel plates. Whether you need thick plates or ultra-thin foil, we deliver with precision.

SAKY STEEL'S Packaging:

1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging. 2. Saky Steel's pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,