ASTM A240 / ASME SA240 UNS S21600 Stainless Steel Plate

 

ASTM A240/ASME SA240 UNS S21600 Stainless Steel Plate supplier

 

For applications requiring superior corrosion resistance, high strength, and excellent toughness in aggressive environments, ASTM A240/ASME SA240 UNS S21600 Stainless Steel Plate is an exceptional choice. As a leading uns stainless supplier, Gangsteel specializes in providing premium sa 240/a 240 uns s21600 plates, sheets, coils, bars, and custom components, all compliant with sa 240/a 240 uns stainless grades standards, including ASTM A240 and ASME SA240. With an inventory exceeding 600 tons and advanced manufacturing capabilities, Gangsteel ensures rapid delivery and tailored solutions for clients worldwide.

 

This comprehensive guide explores the ASTM A240/ASME SA240 UNS S21600 chemical composition, mechanical properties, corrosion resistance, weldability, stainless steel surface finishes, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS S21600 price per kg.

 

Whether you're an engineer designing chemical processing equipment or a procurement specialist sourcing for marine applications, this article will clarify why XM-17 (UNS S21600) stainless steel is a trusted option. Explore our sa 240/a 240 uns stainless grades portfolio for related grades like sa 240/a 240 uns s21400, sa 240/a 240 uns s21800, sa 240/a 240 uns s24000, sa 240/a 240 uns s30100, sa 240/a 240 uns s30103, sa 240/a 240 uns s30153, and sa 240/a 240 uns s30200.

Why Choose ASTM A240/ASME SA240 UNS S21600 Stainless Steel Plate?

 

ASTM A240/ASME SA240 UNS S21600, commonly known as XM-17 stainless steel, is an austenitic stainless steel with 17.5-22.0% chromium, 5.0-7.0% nickel, 7.5-9.0% manganese, 2.0-3.0% molybdenum, and 0.25-0.50% nitrogen. It is engineered for high strength, excellent corrosion resistance, and good toughness, making it ideal for demanding applications in chemical processing, marine, and industrial environments. The high molybdenum and nitrogen content provide a pitting resistance equivalent number (PREN) of ~34-38, offering superior corrosion resistance compared to sa 240/a 240 uns s30100.

The ASTM A240/ASME SA240 UNS S21600 stainless steel plate offers significantly higher strength and corrosion resistance than sa 240/a 240 uns s21400 and sa 240/a 240 uns s24000, making it suitable for aggressive environments. Its excellent weldability and toughness further enhance its versatility compared to sa 240/a 240 uns s30103.

Key benefits of ASTM A240/ASME SA240 UNS S21600 stainless steel plate include:

• Superior Corrosion Resistance: High molybdenum (2.0-3.0%) and nitrogen (0.25-0.50%) content provide excellent resistance to pitting and crevice corrosion, outperforming sa 240/a 240 uns s30153.
• High Strength: Nitrogen and manganese enhancements deliver exceptional strength, surpassing sa 240/a 240 uns s30200.
• Excellent Weldability: Low carbon content (≤ 0.08%) minimizes intergranular corrosion, ideal for welded structures.
• Versatility: Suitable for chemical, marine, and industrial applications, offering performance comparable to sa 240/a 240 uns s31600.

Case Study: A chemical processing plant in India used sa 240/a 240 uns s21600 plates for reactor vessels, achieving a 35% longer service life compared to sa 240/a 240 uns s30100 due to its superior corrosion resistance and strength.

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ASTM A240/ASME SA240 UNS S21600 Corrosion Resistance

 

ASTM A240/ASME SA240 UNS S21600offers excellent corrosion resistance in aggressive environments, including chloride-rich and acidic conditions. Its 17.5-22.0% chromium, 2.0-3.0% molybdenum, and 0.25-0.50% nitrogen content provide a PREN of ~34-38, ensuring superior resistance to pitting, crevice corrosion, and stress corrosion cracking. This makes it ideal for applications like marine equipment and chemical reactors, outperforming sa 240/a 240 uns s21400, sa 240/a 240 uns s21800, and sa 240/a 240 uns s24000. For even more severe environments, consider sa 240/a 240 uns s32750 or sa 240/a 240 uns s32550.

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ASTM A240/ASME SA240 UNS S21600 Weldability

 

The low carbon content (≤ 0.08%) of ASTM A240/ASME SA240 UNS S21600 enhances its weldability by minimizing the risk of carbide precipitation and intergranular corrosion during welding. This makes it superior to sa 240/a 240 uns s30100 for welded structures. It can be welded using common techniques such as TIG, MIG, and resistance welding, with appropriate filler materials to maintain corrosion resistance and strength. Compared to sa 240/a 240 uns s21400, UNS S21600 offers better corrosion resistance in welded zones due to its molybdenum content.

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ASTM A240/ASME SA240 UNS S21600 Stainless Steel Surface

 

The surface finish of ASTM A240/ASME SA240 UNS S21600 stainless steel plate significantly impacts its aesthetic appeal, functionality, and application suitability. Gangsteel offers a variety of surface finishes to meet diverse project requirements, as detailed below:

Surface Finish	Definition/Feature	Summary of Manufacturing Method	Application/Use
NO.1	Silver white, matte	Hot rolled to specified thickness, followed by heat treatment and pickling	Chemical tank, pipe, no need for surface gloss purposes
2B	Stronger gloss than NO.2D	Cold rolled, heat treated, pickled, and lightly cold rolled by polishing rollers	Medical equipment, food industry, construction material, kitchen utensils, general materials
NO.2D/2BB	Silver white	Heat treatment and pickling after cold rolling	General materials, deep drawing materials
NO.3	Rough grinding	Polished with No.100 to No.120 abrasives (JIS R6001) or 100~200# grinding belt	Kitchen utensils, building construction, building materials
NO.4 (4K)	Intermediate grinding	Polished with No.150 to No.180 abrasives (JIS R6001) or 150~180# stone abrasive belt	Kitchen utensils, building construction, medical equipment, building materials
NO.240	Fine grinding	Grinding with 240# stone abrasive belt	Kitchenware
NO.320	Very fine grinding	Grinding with 320# abrasive belt	Kitchenware
NO.400	Gloss close to BA	Grinding with 400# polishing wheel	General timber, construction timber, kitchen utensils
HL	Hairline grinding, continuous polishing streaks	Polished with suitable grain size abrasive (150~240#) for hairline grinding	Building construction, buildings, construction materials
BA (No.6/BA1/BA0)	Bright as a mirror	Bright heat treatment after cold rolling, high surface reflectivity	Kitchen utensils, electric equipment, building construction, building materials
NO.7	Close to mirror polishing	Grinding with 600# rotary polishing wheel	For art and decoration
NO.8 (Mirror/8K)	Shining like a mirror	Grinding mirrors with polishing wheels	Building construction, reflector, for decoration

These surface finishes allow sa 240/a 240 uns s21600 to be tailored for aesthetic or functional requirements, such as the NO.1 finish for chemical tanks or the BA finish for decorative components.

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ASTM A240/ASME SA240 UNS S21600 Chemical Composition

 

The ASTM A240/ASME SA240 UNS S21600 chemical composition is optimized for high strength, corrosion resistance, and weldability, compliant with sa 240/a 240 uns stainless grades standards.

The high chromium (17.5-22.0%), molybdenum (2.0-3.0%), and nitrogen (0.25-0.50%) content provide superior corrosion resistance, while the nickel (5.0-7.0%) and manganese (7.5-9.0%) maintain the austenitic structure. The low carbon content (≤ 0.08%) enhances weldability compared to sa 240/a 240 uns s21400.

Element	Percentage (%)
Chromium (Cr)	17.5 – 22.0
Nickel (Ni)	5.0 – 7.0
Manganese (Mn)	7.5 – 9.0
Molybdenum (Mo)	2.0 – 3.0
Nitrogen (N)	0.25 – 0.50
Carbon (C)	≤ 0.08
Silicon (Si)	≤ 1.0
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.030
Iron (Fe)	Balance (~55%)

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ASTM A240/ASME SA240 UNS S21600 Mechanical Properties

 

The ASTM A240/ASME SA240 UNS S21600 mechanical properties offer a balance of high strength, excellent toughness, and good ductility, suitable for demanding applications.

These properties ensure that ASTM A240/ASME SA240 UNS S21600 stainless steel plate can withstand significant mechanical stresses in aggressive environments. Solution annealing at 1065-1120°C (1950-2050°F) optimizes UNS S21600 mechanical properties for strength and corrosion resistance.

Property	Value at 20°C
Tensile Strength (MPa)	≥ 690 (100 ksi)
Yield Strength (MPa)	≥ 380 (55 ksi)
Elongation (%)	≥ 35
Hardness (HBW)	≤ 293
Density	7.88 g/cm³ (0.285 lb/in³)

At Gangsteel, we’ve seen clients use sa 240/a 240 uns s21600 plates in marine equipment, where its high strength and corrosion resistance outperform sa 240/a 240 uns s21800.

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ASTM A240/ASME SA240 UNS S21600 Specifications and Forms

 

As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s21600 plates, sheets, coils, bars, and custom components, compliant with sa 240/a 240 uns stainless grades standards:

Our advanced manufacturing facilities ensure precision and quality, meeting the diverse needs of global projects, from standard sizes to custom-cut components.

Plate and Sheet

• Thickness: 0.1 mm to 6 mm (sheet), 0.5 mm to 100 mm (plate)
• Width: Up to 3000 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 (see Stainless Steel Surface section)
• Standards: ASTM A240, ASME SA240
• Applications: sa 240/a 240 uns s21600 plates for chemical reactors, UNS S21600 sheets for marine equipment

Coil

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

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: ASTM A240/ASME SA240 UNS S21600 bars for structural components

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 chemical and marine industries

Note: Need a specific size or finish? Gangsteel offers custom solutions, including precision cutting and heat treatments, to meet sa 240/a 240 uns stainless grades requirements. Contact us at admin@gangsteel.com for bespoke ASTM A240/ASME SA240 UNS S21600 material specifications.

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Applications of ASTM A240/ASME SA240 UNS S21600 Stainless Steel Plate

 

ASTM A240/ASME SA240 UNS S21600 stainless steel plateis tailored for industries requiring high strength and superior corrosion resistance in aggressive environments. Its austenitic structure ensures durability and performance in demanding applications.

Key ASTM A240/ASME SA240 UNS S21600 applications include:

• Chemical Processing: sa 240/a 240 uns s21600 plates for reactors and tanks handling acids and chlorides.
• Marine: UNS S21600 sheets for seawater pumps and fittings.
• Industrial: ASTM A240/ASME SA240 UNS S21600 bars for high-strength components in corrosive environments.
• Oil and Gas: Pipelines and valves in sour gas environments.
• Power Generation: Components for flue gas desulfurization systems.

Case Study: A marine equipment manufacturer in India used sa 240/a 240 uns s21600 plates for seawater piping, reducing corrosion-related maintenance by 40% compared to sa 240/a 240 uns s30100 due to its enhanced corrosion resistance and strength.

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ASTM A240/ASME SA240 UNS S21600 vs Related Grades

 

To aid in material selection, here’s a comparison of sa 240/a 240 uns s21600 with sa 240/a 240 uns s21400, sa 240/a 240 uns s21800, sa 240/a 240 uns s24000, sa 240/a 240 uns s30100, sa 240/a 240 uns s30103, and sa 240/a 240 uns s30153:

This comparison highlights the unique advantages of each grade, helping you select the optimal material for your project requirements.

Property	ASTM A240/ASME SA240 UNS S21600	ASME SA240 UNS S21400	ASME SA240 UNS S21800	ASME SA240 UNS S24000	ASME SA240 UNS S30100	ASME SA240 UNS S30103	ASME SA240 UNS S30153
UNS Number	S21600	S21400	S21800	S24000	S30100	S30103	S30153
Type	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic
Chromium Content	17.5-22.0%	15.0-17.5%	16.0-18.0%	17.0-19.0%	16.0-18.0%	16.0-18.0%	16.0-18.0%
Nickel Content	5.0-7.0%	0.5-1.0%	8.0-9.0%	2.3-3.7%	6.0-8.0%	6.0-8.0%	6.0-8.0%
Manganese Content	7.5-9.0%	14.0-16.0%	7.0-9.0%	11.5-14.5%	≤ 2.0%	≤ 2.0%	≤ 2.0%
Molybdenum Content	2.0-3.0%	-	-	-	-	-	-
Nitrogen Content	0.25-0.50%	0.30-0.45%	0.08-0.18%	0.20-0.40%	≤ 0.10%	≤ 0.10%	0.10-0.20%
Carbon Content	≤ 0.08%	≤ 0.12%	≤ 0.10%	≤ 0.08%	≤ 0.15%	≤ 0.03%	≤ 0.03%
Corrosion Resistance	Excellent in chlorides	Moderate in mild environments	Moderate in mild environments	Moderate in mild environments	Good in mild environments	Good in mild environments	Good in mild environments
Strength	High	High	Moderate	High	Moderate	Moderate	Moderate
Temp Range	Up to 870°C (1598°F)	Up to 870°C (1598°F)	Up to 870°C (1598°F)	Up to 870°C (1598°F)	Up to 870°C (1598°F)	Up to 870°C (1598°F)	Up to 870°C (1598°F)
Cost (USD/kg)	6-9	3-6	5-8	4-7	4-7	4-7	4-7
Applications	Chemical, marine, industrial	Structural, automotive	General-purpose, structural	Structural, appliances	Springs, automotive trim	Springs, appliances	Automotive, structural

• ASTM A240/ASME SA240 UNS S21600 vs ASME SA240 UNS S21400: S21600 offers superior corrosion resistance due to molybdenum, while sa 240/a 240 uns s21400 is more cost-effective for mild environments.
• ASTM A240/ASME SA240 UNS S21600 vs ASME SA240 UNS S21800: S21600 provides better corrosion resistance and strength, while sa 240/a 240 uns s21800 is more cost-effective for mild environments.
• ASTM A240/ASME SA240 UNS S21600 vs ASME SA240 UNS S24000: S21600 offers enhanced corrosion resistance, while sa 240/a 240 uns s24000 provides high strength at a lower cost.
• ASTM A240/ASME SA240 UNS S21600 vs ASME SA240 UNS S30100: S21600 excels in aggressive environments, while sa 240/a 240 uns s30100 is suited for springs and mild environments.
• ASTM A240/ASME SA240 UNS S21600 vs ASME SA240 UNS S30103: S21600 offers superior corrosion resistance and strength, while sa 240/a 240 uns s30103 provides better weldability for mild environments.
• ASTM A240/ASME SA240 UNS S21600 vs ASME SA240 UNS S30153: S21600 provides excellent corrosion resistance, while sa 240/a 240 uns s30153 offers improved toughness for automotive applications.

Conclusion: Choose sa 240/a 240 uns s21600 for high-strength, corrosion-resistant applications in aggressive environments, sa 240/a 240 uns s21400 or sa 240/a 240 uns s24000 for cost-effective structural applications, sa 240/a 240 uns s21800 for balanced properties, or sa 240/a 240 uns s30100, sa 240/a 240 uns s30103, or sa 240/a 240 uns s30153 for mild environment applications.

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ASTM A240/ASME SA240 UNS S21600 Equivalent Materials

 

ASTM A240/ASME SA240 UNS S21600aligns with international standards for global compatibility, ensuring seamless integration into projects worldwide.

The equivalent grades allow for flexibility in sourcing materials across different regions, making ASTM A240/ASME SA240 UNS S21600 a versatile choice for corrosion-resistant applications.

Standard	Grade
UNS	S21600
W.Nr.	1.3965
EN	X8CrMnNiMoN19-6-3
ASTM	A240
ASME	SA240

Note: ASTM A240/ASME SA240 UNS S21600 equivalent grades comply with sa 240/a 240 uns stainless grades standards, offering interchangeability with sa 240/a 240 uns s31603 for similar applications.

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ASTM A240/ASME SA240 UNS S21600 Allowable Stress

 

The allowable stress values for ASTM A240/ASME SA240 UNS S21600, per ASME BPVC Section II, Part D, ensure reliable performance in aggressive environments.

These values reflect the material’s ability to withstand significant mechanical stresses while maintaining corrosion resistance in chloride-rich conditions.

Temperature (°C)	Allowable Stress (MPa)
100	160
200	150
300	140
400	130
500	120

Note: These values ensure sa 240/a 240 uns s21600 performs reliably in chemical reactors and marine equipment.

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ASTM A240/ASME SA240 UNS S21600 Price

 

The ASTM A240/ASME SA240 UNS S21600 price per kg ranges from USD 6-9 per kg (FOB), influenced by several factors:

The high strength and corrosion resistance of ASTM A240/ASME SA240 UNS S21600 make it a premium choice for chemical and marine applications.

• Alloy Content: High molybdenum (2.0-3.0%) and nitrogen (0.25-0.50%) increase costs compared to sa 240/a 240 uns s21400.
• Market Demand: High demand in chemical and marine industries drives UNS S21600 price.
• Product Form: ASTM A240/ASME SA240 UNS S21600 plates may cost more than sheets due to processing complexity.
• Global Supply Chain: Freight and raw material availability impact ASTM A240/ASME SA240 UNS S21600 cost.

For a precise ASTM A240/ASME SA240 UNS S21600 price per kg or bulk discounts, contact Gangsteel at admin@gangsteel.com.

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Related Stainless Steel Grades

 

As a leading uns stainless supplier, Gangsteel offers a wide range of sa 240/a 240 uns stainless grades to complement sa 240/a 240 uns s21600 for various applications:

This diverse portfolio ensures clients can find the ideal material for their specific project needs, from corrosion resistance to high-temperature performance.

• sa 240/a 240 uns s21400: Cost-effective austenitic stainless steel for structural applications.
• sa 240/a 240 uns s21800: Austenitic stainless steel with moderate corrosion resistance and strength.
• sa 240/a 240 uns s24000: Austenitic stainless steel with high manganese for strength.
• sa 240/a 240 uns s30100: Austenitic stainless steel for springs and automotive trim.
• sa 240/a 240 uns s30103: Low-carbon austenitic stainless steel for enhanced weldability.
• sa 240/a 240 uns s30153: Nitrogen-enhanced austenitic stainless steel for improved strength.
• sa 240/a 240 uns s30200: Austenitic stainless steel with good corrosion resistance.
• sa 240/a 240 uns s30400: General-purpose austenitic stainless steel.
• sa 240/a 240 uns s30403: Low-carbon for enhanced weldability.
• sa 240/a 240 uns s30409: High-carbon for high-temperature strength.
• sa 240/a 240 uns s30908: Low-carbon for moderate high-temperature applications.
• sa 240/a 240 uns s31000: High-carbon for extreme high-temperature strength.
• sa 240/a 240 uns s31008: Low-carbon for enhanced weldability in high-temperature applications.
• sa 240/a 240 uns s31009: High-carbon for enhanced creep resistance.
• sa 240/a 240 uns s31600: Molybdenum-alloyed for chloride resistance.
• sa 240/a 240 uns s31603: Low-carbon for enhanced weldability in chloride environments.
• sa 240/a 240 uns s31700: High corrosion resistance for chemical processing.
• sa 240/a 240 uns s31703: Low-carbon for acidic environments.
• sa 240/a 240 uns s32100: Titanium-stabilized for high-temperature applications.
• sa 240/a 240 uns s32109: High-carbon for enhanced creep resistance.
• sa 240/a 240 uns s34700: Stabilized for high-temperature corrosion resistance.
• sa 240/a 240 uns s34709: Enhanced creep resistance for high-temperature applications.
• sa 240/a 240 uns s30815: High-temperature corrosion resistance.
• sa 240/a 240 uns n08904: Superior sulfuric acid resistance for chemical applications.
• sa 240/a 240 uns s31254: High corrosion resistance for aggressive environments.
• sa 240/a 240 uns s43932: Ferritic for automotive exhaust systems.
• sa 240/a 240 uns s44400: Ferritic with high corrosion resistance for water tanks.
• sa 240/a 240 uns s32304: Lean duplex for structural applications.
• sa 240/a 240 uns s31803: Duplex for marine and chemical applications.
• sa 240/a 240 uns s32205: Duplex for enhanced corrosion resistance.
• sa 240/a 240 uns s32750: Super-duplex for aggressive environments.
• sa 240/a 240 uns s32760: Super-duplex for extreme corrosion resistance.
• sa 240/a 240 uns s32520: Super-duplex for high-strength applications.
• sa 240/a 240 uns s32550: Super-duplex for enhanced sulfuric acid resistance.
• sa 240/a 240 uns s41000: Martensitic for high-strength, wear-resistant applications.
• sa 240/a 240 uns s43000: Ferritic for automotive and appliance applications.

Note: These grades complement sa 240/a 240 uns s21600 in chemical, marine, and industrial 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 ASTM A240/ASME SA240 UNS S21600 and ASME SA240 UNS S30100?

A: ASTM A240/ASME SA240 UNS S21600 offers superior corrosion resistance and strength due to molybdenum and nitrogen, while sa 240/a 240 uns s30100 is more cost-effective for mild environments.

Q: Is ASTM A240/ASME SA240 UNS S21600 suitable for marine applications?

A: Yes, its high molybdenum and nitrogen content ensure excellent resistance to chloride corrosion, making it ideal for seawater equipment compared to sa 240/a 240 uns s21800.

Q: How does the price of ASTM A240/ASME SA240 UNS S21600 compare to ASME SA240 UNS S21400?

A: ASTM A240/ASME SA240 UNS S21600 is typically 30-50% more expensive than sa 240/a 240 uns s21400 due to its higher alloy content, offering superior corrosion resistance and strength.

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Contact Us

 

For sa 240/a 240 uns s21600 quotes, technical data sheets, or custom solutions, contact Gangsteel at admin@gangsteel.com. Explore our sa 240/a 240 uns stainless grades portfolio for more options.

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