ASME SA 240 Gr 321 Stainless Steel Sheet Supplier

 

ASME SA 240 Gr 321 Stainless Steel Sheet Supplier

 

When it comes to selecting a stainless steel that combines excellent corrosion resistance with high-temperature strength, ASME SA 240 Gr 321 stainless steel sheet stands out as a top performer.

As a leading exporter of stainless steel plates, sheets, and coils from China, Gangsteel delivers premium ASME SA 240 Gr 321 stainless steel sheet, alongside plates, coils, bars, and custom components, all compliant with ASME SA240 and ASTM A240 standards. With an inventory exceeding 600 tons and cutting-edge processing capabilities, we ensure fast delivery and tailored solutions for clients worldwide.

We explores the ASME SA 240 Gr 321 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASME SA 240 Gr 321 price per kg. Whether you're an engineer designing heat exchangers or a procurement specialist sourcing for aerospace components, this guide will help you understand why 321 is a go-to choice. Discover our ASME SA240 stainless steel plate portfolio for related grades like sa 240 gr 321h, sa 240 gr 347, and sa 240 gr 316.

 

Why Choose ASME SA 240 Gr 321 Stainless Steel Sheet?

 

ASME SA 240 Gr 321, also known as UNS S32100, is an austenitic stainless steel stabilized with titanium, offering excellent resistance to intergranular corrosion and high-temperature stability up to 900°C (1652°F). With 17.0-19.0% chromium, 9.0-12.0% nickel, and titanium (5xC min), it’s designed for applications where welding and high temperatures are involved, such as in aerospace, chemical processing, and power generation.

Key benefits of ASME SA 240 Gr 321 stainless sheet include:

• High-Temperature Resistance: Titanium stabilization prevents carbide precipitation, ensuring durability in high-heat environments compared to sa 240 gr 304.
• Superior Weldability: Low carbon and titanium reduce sensitization, making it ideal for welded structures without post-weld annealing.
• Good Corrosion Resistance: Performs well in oxidizing environments and mild acids, offering a cost-effective alternative to sa 240 gr 316l.
• Versatility: Suitable for industries requiring both strength and aesthetics, with a polished finish for decorative uses.

Case Study: An aerospace manufacturer in India used ASME SA 240 Gr 321 stainless sheet for jet engine components, improving service life by 30% due to its high-temperature stability and corrosion resistance.

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ASME SA 240 Gr 321 Chemical Composition

 

The ASME SA 240 Gr 321 chemical composition is engineered for high-temperature strength, corrosion resistance, and weldability, compliant with ASME SA240 standards.

Element	Percentage (%)
Chromium (Cr)	17.0 – 19.0
Nickel (Ni)	9.0 – 12.0
Titanium (Ti)	5xC – 0.70
Carbon (C)	≤ 0.08
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 0.75
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.03
Iron (Fe)	Balance (~65%)

The titanium addition stabilizes the alloy against intergranular corrosion, while low carbon enhances weldability. This makes ASME SA 240 Gr 321 a superior choice over sa 240 gr 304h for applications involving welding and high temperatures.

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ASME SA 240 Gr 321 Mechanical Properties

 

The ASME SA 240 Gr 321 mechanical properties offer a balance of strength, ductility, and high-temperature performance, ideal for demanding applications.

Property	Value at 20°C	Value at 540°C (1000°F)
Tensile Strength (MPa)	≥ 515 (75 ksi)	≥ 380 (55 ksi)
Yield Strength (MPa)	≥ 205 (30 ksi)	≥ 170 (25 ksi)
Elongation (%)	≥ 40	≥ 45
Hardness (HRB)	≤ 95	-
Density	8.0 g/cm³ (0.289 lb/in³)	-

Solution annealing at 950-1120°C (1742-2048°F) optimizes UNS S32100 mechanical properties for corrosion resistance and high-temperature stability. At Gangsteel, we’ve seen clients use this alloy in heat exchangers where its performance surpasses sa 240 gr 316h in high-temperature settings.

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ASME SA 240 Gr 321 Specifications and Forms

 

Gangsteel supplies ASME SA 240 Gr 321 stainless steel sheet, plate, coil, bar, and custom components to meet your project’s needs, compliant with ASME SA240 and ASTM A240 standards:

7.1 Sheet and Plate

• Thickness: 0.1 mm to 6 mm (sheet), 0.5 mm to 100 mm (plate)
• Width: Up to 4200 mm
• Length: 2000 mm to 12000 mm (or coiled for sheet)
• Surface Finish: Hot-rolled, cold-rolled, annealed, pickled, 2B, No.1, No.4, BA, or customized
• Standards: ASME SA240, ASTM A240
• Applications: ASME SA 240 Gr 321 stainless sheet for heat exchanger tubes, UNS S32100 plate for aerospace components

7.2 Coil

• Thickness: 0.1 mm to 6 mm
• Width: Up to 2000 mm
• Standards: ASME SA240, ASTM A240
• Applications: Continuous production for welded pipes and tubes

7.3 Bar

• Diameter: 6 mm to 500 mm
• Length: Up to 12000 mm
• Finish: Hot-rolled, cold-drawn, centerless ground
• Standards: ASTM A479, ASME SA-479
• Applications: ASME SA 240 Gr 321 bar for high-temperature fittings

7.3 Custom Components

• Types: Flanges (ASME B16.5), fittings, CNC-machined parts, stainless cutting sheet part
• Tolerances: ±0.05 mm for precision components
• Applications: Tailored solutions for aerospace and chemical industries

Note: Need a specific size or finish? Gangsteel offers custom solutions, including precision cutting and heat treatments, to meet ASME SA240 requirements. Contact us at admin@gangsteel.com for bespoke ASME SA 240 Gr 321 material specifications.

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Applications of ASME SA 240 Gr 321 Stainless Steel Sheet

 

ASME SA 240 Gr 321 stainless sheetis tailored for industries requiring high-temperature strength and corrosion resistance. Key ASME SA 240 Gr 321 applications include:

• Aerospace: ASME SA 240 Gr 321 stainless sheet for jet engine components and exhaust systems.
• Chemical Processing: UNS S32100 plate for reactors and heat exchangers.
• Power Generation: ASME SA 240 Gr 321 bar for boiler fittings and superheaters.
• Oil and Gas: Piping in high-temperature environments.
• Pharmaceutical: Equipment requiring corrosion resistance and hygiene.

Case Study: A power plant in the UAE used ASME SA 240 Gr 321 stainless sheet for superheater tubes, achieving 25% longer service life compared to sa 240 gr 304h due to its titanium stabilization.

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ASME SA 240 Gr 321 vs Related Grades

 

To aid in material selection, here’s a comparison of ASME SA 240 Gr 321 with sa 240 gr 321h, sa 240 gr 347, and sa 240 gr 316:

Property	ASME SA 240 Gr 321 (S32100)	ASME SA240 Gr 321H	ASME SA240 Gr 347	ASME SA240 Gr 316
UNS Number	S32100	S32109	S34700	S31600
Type	Austenitic	Austenitic	Austenitic	Austenitic
Chromium Content	17.0-19.0%	17.0-19.0%	17.0-19.0%	16.0-18.0%
Nickel Content	9.0-12.0%	9.0-12.0%	9.0-13.0%	10.0-14.0%
Stabilizing Element	Ti (5xC-0.70%)	Ti (4xC-0.70%)	Cb+Ta (10xC-1.0%)	-
Carbon Content	≤ 0.08%	0.04-0.10%	≤ 0.08%	≤ 0.08%
Corrosion Resistance	Good in oxidizing environments	Good in oxidizing environments	Good, intergranular	Excellent in chlorides
Strength	Moderate	High at high temps	Moderate	Moderate
Temp Range	Up to 900°C (1652°F)	Up to 900°C (1652°F)	Up to 850°C (1562°F)	Up to 870°C (1598°F)
Cost (USD/kg)	6-12	6-12	7-14	6-12
Applications	Aerospace, chemical	High-temp chemical	Aerospace, chemical	Marine, chemical

• ASME SA 240 Gr 321 vs ASME SA240 Gr 321H: ASME SA 240 Gr 321 offers standard weldability, while sa 240 gr 321h has higher carbon for enhanced creep resistance in high-temperature applications.
• ASME SA 240 Gr 321 vs ASME SA240 Gr 347: ASME SA 240 Gr 321 uses titanium for stabilization, while sa 240 gr 347 uses columbium/tantalum, offering similar intergranular corrosion resistance.
• ASME SA 240 Gr 321 vs ASME SA240 Gr 316: ASME SA 240 Gr 321 excels in high-temperature environments, while sa 240 gr 316 is better for chloride-rich settings due to molybdenum.

Conclusion: Choose ASME SA 240 Gr 321 for high-temperature welded applications, sa 240 gr 321h for creep resistance, sa 240 gr 347 for similar stabilized performance, or sa 240 gr 316 for chloride resistance.

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ASME SA 240 Gr 321 Equivalent Materials

 

ASME SA 240 Gr 321aligns with international standards for global compatibility.

Standard	Grade
UNS	S32100
W.Nr.	1.4541
EN	X6CrNiTi18-10
JIS	SUS 321
GB	0Cr18Ni10Ti
ASTM	A240 321
ASME	SA240 321

Note: ASME SA 240 Gr 321 equivalent grades comply with ASME SA240, JIS, and GB standards, offering interchangeability with sa 240 gr 321h for high-temperature applications.

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ASME SA 240 Gr 321 Allowable Stress

 

The allowable stress values for ASME SA 240 Gr 321, per ASME BPVC Section II, Part D, ensure reliable performance in high-temperature applications.

Temperature (°C)	Allowable Stress (MPa)
100	150
200	140
300	130
400	120
500	110
600	100

Note: These values ensure ASME SA 240 Gr 321 performs reliably in heat exchangers and aerospace components under elevated temperatures.

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ASME SA 240 Gr 321 Price

 

The ASME SA 240 Gr 321 price per kg ranges from USD 6-12 per kg (FOB), influenced by:

• Alloy Content: Titanium stabilization increases costs slightly compared to sa 240 gr 304.
• Market Demand: High demand in aerospace and chemical industries drives UNS S32100 price.
• Product Form: ASME SA 240 Gr 321 plate may cost more than sheet due to processing complexity.
• Global Supply Chain: Freight and availability impact ASME SA 240 Gr 321 cost.

For a precise ASME SA 240 Gr 321 price per kg or bulk discounts, contact Gangsteel at admin@gangsteel.com.

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Related Stainless Steel Grades

 

Gangsteel offers a wide range of ASME SA240 stainless steel plate grades to complement ASME SA 240 Gr 321 for various applications:

• sa 240 gr 321h: High-carbon for enhanced creep resistance.
• sa 240 gr 347: Columbium-stabilized for high-temperature corrosion resistance.
• sa 240 gr 347h: Enhanced creep resistance for high-temperature applications.
• sa 240 gr 316: Excellent corrosion resistance for marine applications.
• sa 240 gr 316l: Low-carbon for enhanced weldability.
• sa 240 gr 316h: High-temperature strength for chemical processing.
• sa 240 gr 316ln: Nitrogen-enhanced for strength and corrosion resistance.
• sa 240 gr 316n: High strength for structural applications.
• sa 240 gr 316ti: Titanium-stabilized for high-temperature weldability.
• sa 240 gr 317: High corrosion resistance for chemical processing.
• sa 240 gr 317l: Low-carbon for acidic environments.
• sa 240 gr 317lm: Cost-effective corrosion resistance for acidic environments.
• sa 240 gr 317lmn: Nitrogen-enhanced for improved strength and corrosion resistance.
• sa 240 gr 904l: Superior sulfuric acid resistance for chemical applications.
• sa 240 gr 201: Cost-effective for decorative applications.
• sa 240 gr 201l: Cost-effective for structural applications.
• sa 240 gr 201ln: Nitrogen-enhanced for structural and cryogenic applications.
• sa 240 gr 202: General corrosion resistance for decorative uses.
• sa 240 gr 301: High strength for springs and fasteners.
• sa 240 gr 301l: Low-carbon for improved weldability.
• sa 240 gr 301ln: Nitrogen-enhanced for strength and weldability.
• sa 240 gr 302: General-purpose austenitic stainless steel.
• sa 240 gr 305: High nickel for deep drawing applications.
• sa 240 gr 309cb: High-temperature corrosion resistance.
• sa 240 gr 309h: High-temperature strength for furnaces.
• sa 240 gr 309hcb: Enhanced high-temperature performance.
• sa 240 gr 309s: Corrosion resistance for high-temperature applications.
• sa 240 gr 310cb: High-temperature strength with columbium.
• sa 240 gr 310h: High-temperature resistance for furnaces.
• sa 240 gr 310hcb: Enhanced high-temperature performance.
• sa 240 gr 310moln: Nitrogen-enhanced for urea production.
• sa 240 gr 310s: High-temperature corrosion resistance.
• sa 240 gr 316cb: Columbium-stabilized for weldability.
• sa 240 gr 415: High strength for oilfield and turbine applications.
• sa 240 type 2205: Duplex for marine applications.
• sa 240 type 2304: Lean duplex for structural applications.
• sa 240 type 2507: Super-duplex for aggressive environments.
• sa 240 type 329: Duplex for chemical and marine applications.
• sa 240 type 255: Enhanced sulfuric acid resistance.
• sa 240 gr 800: High-temperature corrosion resistance.
• sa 240 gr 800H: Enhanced creep resistance for high temperatures.
• sa 240 gr 904l: Superior sulfuric acid resistance.
• sa 240 gr 334: High-temperature resistance for heating elements.
• sa 240 gr 348: Low-cobalt for nuclear applications.
• sa 240 gr 348h: High-carbon for enhanced high-temperature strength.
• sa 240 gr 201l: Cost-effective for decorative applications.
• sa 240 gr 405: Ferritic for heat-resistant applications.
• sa 240 gr 409: Cost-effective for automotive exhaust systems.
• sa 240 gr 410: Martensitic for high-strength applications.
• sa 240 gr 410s: Low-carbon martensitic for improved weldability.
• sa 240 gr 429: Ferritic for corrosion and heat resistance.
• sa 240 gr 430: Ferritic for decorative and appliance applications.
• sa 240 gr 434: Ferritic with molybdenum for enhanced corrosion resistance.
• sa 240 gr 436: Ferritic for automotive and corrosion-resistant applications.
• sa 240 gr 439: Ferritic for exhaust systems and appliances.
• sa 240 gr 444: Ferritic with high corrosion resistance for water tanks.

Note: These grades complement ASME SA 240 Gr 321 in high-temperature, chemical, and aerospace applications. Contact Gangsteel for a full catalog to find the perfect material for your project.

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FAQ

 

Q: What is the main difference between ASME SA 240 Gr 321 and ASME SA240 Gr 321H?

A: ASME SA 240 Gr 321 offers standard weldability and corrosion resistance, while sa 240 gr 321h has higher carbon for improved creep resistance in high-temperature environments.

Q: Is ASME SA 240 Gr 321 suitable for welding?

A: Yes, its titanium stabilization and low carbon content ensure excellent weldability without sensitization, ideal for applications like sa 240 gr 316ti.

Q: How does the price of ASME SA 240 Gr 321 compare to ASME SA240 Gr 347?

A: ASME SA 240 Gr 321 is typically slightly less expensive than sa 240 gr 347 due to differences in stabilizing elements (titanium vs. columbium/tantalum), but costs vary based on market demand.

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Contact Us

 

For ASME SA 240 Gr 321 stainless steel sheet quotes, technical data sheets, or custom solutions, contact Gangsteel at admin@gangsteel.com. Explore our ASME SA240 stainless steel plate portfolio for more options.

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