ASME SA240 ASTM A240 UNS S31726 Stainless Steel Sheet: Premium Quality from Gangsteel

 

In the world of high-performance materials, ASME SA240 ASTM A240 UNS S31726 stainless steel sheet stands out as a robust solution for demanding industrial applications.

As a leading manufacturer and exporter at Gangsteel, we specialize in producing and supplying this premium austenitic stainless steel grade to global markets.

Known for its exceptional corrosion resistance and superior mechanical properties, UNS S31726—often referred to as 317LMN—is engineered for environments where standard stainless steels fall short. Whether you're in the chemical processing, oil and gas, or pulp and paper industries, our ASME SA240 ASTM A240 UNS S31726 stainless steel sheets deliver unmatched durability and reliability.

At Gangsteel, we prioritize quality, adhering strictly to international standards like ASME SA240 and ASTM A240. With state-of-the-art facilities in China and a commitment to exporting worldwide, we ensure every sheet meets rigorous specifications. Explore how our sa240/a240 uns s31726 can elevate your projects—contact us today for competitive pricing and fast delivery. For similar high-performance options, check out our sa240/a240 uns s31725, sa240/a240 uns s31753, or sa240/a240 uns s32050 sheets.

 

What is ASME SA240 ASTM A240 UNS S31726 Stainless Steel Sheet?

ASME SA240 ASTM A240 UNS S31726 stainless steel sheetis a hot-rolled or cold-rolled plate derived from the 317 family of austenitic stainless steels, enhanced with low carbon (L) and high nitrogen (MN) content for improved performance. This grade, designated as UNS S31726, is specified under ASME SA240 for pressure vessels and ASTM A240 for general corrosion-resistant applications. The "LMN" suffix highlights its low-carbon composition (≤0.03%) combined with elevated molybdenum (4.00-5.00%), chromium (18.00-20.00%), and nickel (13.50-17.50%), making it highly resistant to pitting, crevice corrosion, and stress corrosion cracking.

Unlike conventional 304 or 316 stainless steels, UNS S31726 stainless steel sheets offer enhanced resistance in chloride-rich and acidic environments, thanks to the nitrogen addition that boosts strength without sacrificing ductility. With a product density of 8.0 g/cm³, these sheets provide an optimal balance of lightweight design and robustness. Available in various specifications, they are versatile for fabrication into tanks, heat exchangers, and structural components.

As Gangsteel, we've exported thousands of tons of ASME SA240 ASTM A240 UNS S31726 stainless steel sheets to clients in Europe, North America, and Asia, ensuring compliance with ISO 9001 and PED certifications for seamless integration into your supply chain. Our expertise extends to related grades like sa240/a240 uns s32615 and sa240/a240 uns s32654.

Key Chemical Composition of UNS S31726 Stainless Steel Sheet

 

The precise alloying elements in ASME SA240 ASTM A240 UNS S31726 stainless steel sheet define its superior corrosion resistance. Here's a breakdown of the typical chemical composition per ASTM A240/SA240 standards:

Element

Composition Range (%)

Role in Alloy

Carbon (C)

≤0.030

Minimizes carbide precipitation for better weldability

Manganese (Mn)

≤2.00

Enhances nitrogen solubility and strength

Phosphorus (P)

≤0.045

Controls impurities for improved toughness

Sulfur (S)

≤0.030

Low levels prevent hot shortness during rolling

Silicon (Si)

≤1.00

Aids in deoxidation and scaling resistance

Chromium (Cr)

18.00-20.00

Primary corrosion resistance element

Nickel (Ni)

13.50-17.50

Stabilizes austenitic structure and boosts ductility

Molybdenum (Mo)

4.00-5.00

Dramatically improves resistance to pitting and crevice corrosion

Nitrogen (N)

0.10-0.20

Increases yield strength and resistance to localized corrosion

This composition ensures UNS S31726 stainless steel sheets perform exceptionally in harsh conditions, such as sulfuric acid exposure or seawater applications. At Gangsteel, our metallurgical experts conduct rigorous PMI (Positive Material Identification) testing to guarantee these specs on every batch. For comparable compositions, see our sa240/a240 uns s33228 or sa240/a240 uns s33400.

 

Mechanical Properties and Specifications

 

ASME SA240 ASTM A240 UNS S31726 stainless steel sheetsare renowned for their balanced mechanical properties, making them ideal for high-stress environments. Key properties include:

Property

Value (Minimum)

Test Condition

Tensile Strength

515 MPa (75 ksi)

Annealed

Yield Strength

205 MPa (30 ksi)

0.2% Offset

Elongation

40% in 50mm

Transverse

Hardness

≤217 HB (Brinell)

As-rolled

 

 

 

These sheets are available in annealed and pickled conditions, with options for custom tempering. Under ASME SA240, they qualify for boiler and pressure vessel codes (Section II), while ASTM A240 covers broader uses like flanges and fittings. Gangsteel produces these in standard sizes but offers cut-to-size services to minimize waste and accelerate your production timelines. Explore related grades such as sa240/a240 uns s34565 or sa240/a240 uns s34800.

Equivalent Materials for UNS S31726 Stainless Steel Sheet

 

For projects requiring alternatives or equivalents to UNS S31726, Gangsteel supplies a range of comparable grades across international standards. Below is a table of equivalent materials:

UNS Designation

Common Name/Grade

Standards

Key Equivalents

S31726

317LMN

ASTM A240, ASME SA240

EN 1.4438, DIN X2CrNiMoN18-14

S31725

317LM

ASTM A240, ASME SA240

Similar to 317LMN with slight variations in N

S31753

317LN

ASTM A240, ASME SA240

EN 1.4404, low C variant

S31200

312 Duplex

ASTM A240, ASME SA240

EN 1.4401, for duplex needs

S31260

312 Duplex

ASTM A240, ASME SA240

Super duplex equivalent

These equivalents maintain similar corrosion resistance and mechanical profiles, ideal for seamless substitutions. View details on sa240/a240 uns s34809 or sa240/a240 uns s35045 for more options.

Available Specifications and Sizes for UNS S31726 Stainless Steel Sheet

 

Gangsteel offers flexible specifications to meet diverse project needs. Our ASME SA240 ASTM A240 UNS S31726 stainless steel sheets can be customized as follows:

Specification

Range/Details

Thickness

0.5 mm to 200 mm

Width

Up to 3000 mm

Length

Up to 12000 mm

Surface Finish

Hot-rolled (No.1), Cold-rolled (2B, BA), Annealed & Pickled

Forms

Sheets, Plates, Coils, Cut-to-Size

Cutting Options

Plasma, Laser, Waterjet

With a product density of 8.0 g/cm³, these sheets are lightweight yet durable, supporting efficient shipping and installation. We handle precision machining for sa240/a240 uns s35135 and similar grades.

Applications of ASME SA240 ASTM A240 UNS S31726 Stainless Steel Sheet

 

The versatility of UNS S31726 stainless steel sheets shines across industries requiring corrosion-resistant materials. Common applications include:

  • Chemical Processing: Tanks, reactors, and piping for handling acids like phosphoric and hydrochloric.
  • Oil and Gas: Offshore platforms and desalination plants where chloride stress is prevalent.
  • Pulp and Paper: Digesters and bleach washers exposed to alkaline and sulfurous environments.
  • Pharmaceuticals: Sterile equipment and vessels demanding high purity and cleanability.
  • Power Generation: Flue gas desulfurization systems for scrubbers and ducts.

Gangsteel's ASME SA240 ASTM A240 UNS S31726 stainless steel sheets have been instrumental in major projects, from European refineries to Middle Eastern desalination facilities. Their PREN (Pitting Resistance Equivalent Number) of over 40 ensures longevity, reducing maintenance costs by up to 30% compared to 316L grades. Pair with sa240/a240 uns s35315 for high-temperature apps.

Advantages of Choosing Gangsteel for Your UNS S31726 Stainless Steel Needs

 

As a premier exporter of ASME SA240 ASTM A240 UNS S31726 stainless steel sheets, Gangsteel offers unmatched advantages:

  • Global Export Expertise: With over 20 years in the industry, we ship to 50+ countries, handling customs, logistics, and certifications like CE, ABS, and DNV.
  • Quality Assurance: Mill test certificates (EN 10204/3.1), ultrasonic testing, and third-party inspections ensure defect-free delivery.
  • Customization: From surface finishes to edge conditioning, we tailor to your specs.
  • Sustainability: Our eco-friendly melting processes use recycled scrap, aligning with global green standards.

Why settle for generic suppliers when Gangsteel guarantees premium UNS S31726 stainless steel sheets backed by responsive support? Our clients rave about our on-time deliveries and after-sales service. Discover more in our sa240/a240 uns s38100 range.

Why UNS S31726 Excels in Corrosion Resistance

 

In aggressive environments, ASME SA240 ASTM A240 UNS S31726 stainless steel sheets outperform competitors. The high molybdenum and nitrogen content elevates its Critical Pitting Temperature (CPT) to over 70°C in 6% FeCl3, far surpassing 316L's 35°C. This makes it perfect for urea plants, acetic acid production, and marine applications. Independent tests by NACE (National Association of Corrosion Engineers) confirm its resistance to intergranular corrosion post-welding, thanks to the low carbon design.

At Gangsteel, we leverage advanced pickling lines to enhance surface passivation, ensuring your UNS S31726 sheets arrive ready for immediate use. Compare with sa240/a240 uns s38815.

Pricing for ASME SA240 ASTM A240 UNS S31726 Stainless Steel Sheet

 

Pricing for UNS S31726 stainless steel sheets at Gangsteel is competitive and volume-based, reflecting current market conditions and alloy premiums. As of our latest updates:

  • Standard Sheet (1-5mm thick, 1500x6000mm): Starting at $4,500-$6,000 per ton (FOB Shanghai).
  • Thick Plate (10-50mm): $5,200-$7,500 per ton, depending on quantity.
  • Custom Cuts: Add 10-15% for precision processing.

Factors influencing price include thickness, surface finish, and order volume (minimum 1 ton). Bulk orders qualify for discounts up to 15%. For an exact quote tailored to your specs, email us at admin@gangsteel.com. Prices are subject to change; visit https://gangsteel.net for real-time inquiries. Related pricing available for sa240/a240 uns s31200.

Keywords: ASME SA240 stainless steel sheet, ASTM A240 UNS S31726, 317LMN stainless steel plate, corrosion-resistant stainless steel exporter, Gangsteel stainless steel supplier.

FAQ: Common Questions About ASME SA240 ASTM A240 UNS S31726 Stainless Steel Sheet

 

What is UNS S31726 stainless steel used for?

 

UNS S31726, or 317LMN, is a super austenitic stainless steel primarily used in highly corrosive environments like chemical processing plants, oil refineries, and desalination systems. Its high molybdenum and nitrogen content provides superior resistance to pitting and crevice corrosion in chloride and acidic conditions. At Gangsteel, we supply it for applications such as heat exchangers, pressure vessels, and piping, ensuring compliance with ASME SA240 and ASTM A240 standards. For similar uses, consider our sa240/a240 uns s32001.

 

What are the differences between UNS S31726 and 316L stainless steel?

While both are austenitic, UNS S31726 offers enhanced corrosion resistance due to higher molybdenum (4-5% vs. 2-3% in 316L) and added nitrogen, making it suitable for more aggressive environments like sulfuric acid handling. 316L has lower strength (yield ~170 MPa vs. 205 MPa) and a PREN of ~24 compared to S31726's 40+. Gangsteel recommends S31726 for upgrades from 316L in marine or chemical apps. See equivalents in our sa240/a240 uns s32003 lineup.

 

Is UNS S31726 stainless steel weldable?

Yes, UNS S31726 is highly weldable using common methods like GTAW (TIG) or SMAW, with matching filler metals like ER317LMN. Its low carbon content prevents sensitization, and post-weld annealing is optional for most applications. However, avoid overheating to maintain corrosion resistance. Gangsteel provides weld test certificates with every order. For welding guides on related grades, visit our sa240/a240 uns s32101 page.

 

What is the density of UNS S31726 stainless steel?

The density of ASME SA240 ASTM A240 UNS S31726 stainless steel sheet is 8.0 g/cm³ (0.289 lb/in³), similar to other austenitic grades. This makes it ideal for weight-sensitive designs without compromising strength. At Gangsteel, we factor this into shipping quotes for efficiency.

How much does UNS S31726 stainless steel cost per kg?

 

Pricing varies by market and specs, but Gangsteel offers UNS S31726 at approximately $2.25-$3.75 per kg for standard sheets (FOB basis). Thicker plates or custom finishes may increase costs. Contact admin@gangsteel.com for current rates, influenced by alloy surcharges and volume. Compare with sa240/a240 uns s32900.

 

Can UNS S31726 be heat treated?

UNS S31726is typically supplied in the solution-annealed condition (1050-1150°C, water quenched) for optimal corrosion resistance. It doesn't respond to hardening heat treatments like precipitation-hardening grades but can be stress-relieved at 400-700°C. Gangsteel performs in-house annealing; consult us for custom treatments on sa240/a240 uns s32906.

 

What certifications are available for Gangsteel UNS S31726 sheets?

All UNS S31726 sheets from Gangsteel come with EN 10204/3.1 mill test certificates, PMI reports, and ultrasonic testing. We also provide third-party inspections (e.g., SGS, BV) and compliance docs for ASME, ASTM, and PED. Our ISO 9001 certification ensures traceability. Learn more about certifications for sa240/a240 uns s32950.

 

Contact Gangsteel Today for ASME SA240 ASTM A240 UNS S31726 Stainless Steel Sheets

 

Ready to source high-quality ASME SA240 ASTM A240 UNS S31726 stainless steel sheets? Gangsteel is your trusted partner for manufacturing and exporting this elite grade. Visit our website at https://gangsteel.net or email admin@gangsteel.com for a free sample, detailed datasheet, or personalized quote. With warehouses in Shanghai and Rotterdam, we deliver worldwide—empower your projects with Gangsteel's excellence today! Check out sa240/a240 uns s31260 for duplex alternatives.

 

 

 

 

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