ASTM A240/ASME SA240 UNS S30908 Stainless Steel 309s sheet

 

ASTM A240/ASME SA240 UNS S30908 Stainless Steel 309S Sheet supplier

 

For projects requiring high-temperature corrosion resistance and durability, ASTM A240/ASME SA240 UNS S30908 Stainless Steel 309S Sheet is a premier choice.

As a leading uns stainless supplier, Gangsteel offers high-quality sa 240/a 240 uns s30908 sheets, plates, 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 processing capabilities, we ensure rapid delivery and tailored solutions for clients worldwide.

This comprehensive guide explores the ASTM A240/ASME SA240 UNS S30908 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASTM A240/ASME SA240 UNS S30908 price per kg.

Whether you're an engineer designing industrial furnaces or a procurement specialist sourcing for high-temperature chemical applications, this article will clarify why 309S 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 s30400, sa 240/a 240 uns s31008, and sa 240/a 240 uns s32100.

Why Choose ASTM A240/ASME SA240 UNS S30908 Stainless Steel 309S Sheet?

 

ASTM A240/ASME SA240 UNS S30908, commonly known as 309S stainless steel, is a low-carbon austenitic stainless steel with 22.0-24.0% chromium and 12.0-15.0% nickel. The "S" in 309S denotes low carbon, which enhances weldability by minimizing carbide precipitation, making it ideal for high-temperature applications requiring welding. Designed for excellent oxidation resistance and strength at temperatures up to 1000°C (1832°F), it is widely used in furnaces, heat exchangers, and chemical processing.

The low carbon content ensures that ASTM A240/ASME SA240 UNS S30908 stainless steel 309S sheet maintains corrosion resistance in welded structures, offering superior high-temperature performance compared to sa 240/a 240 uns s30400. Its high chromium and nickel content provide excellent resistance to oxidation and scaling in high-temperature environments.

Key benefits of ASTM A240/ASME SA240 UNS S30908 stainless steel 309S sheet include:

• Superior High-Temperature Resistance: High chromium and nickel content ensure excellent oxidation resistance, outperforming sa 240/a 240 uns s30400 in high-temperature environments.
• Enhanced Weldability: Low carbon content (≤ 0.08%) minimizes intergranular corrosion during welding, making it ideal for heavy welding compared to sa 240/a 240 uns s30909.
• Good Corrosion Resistance: Resists corrosion in mild chemical environments, suitable for industrial applications.
• Durability: Maintains strength and integrity in cyclic high-temperature conditions, unlike sa 240/a 240 uns s20100.

Case Study: A furnace manufacturer in India used sa 240/a 240 uns s30908 sheets for heat exchanger components, achieving a 30% longer service life due to its oxidation resistance compared to sa 240/a 240 uns s30409.

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ASTM A240/ASME SA240 UNS S30908 Chemical Composition

 

The ASTM A240/ASME SA240 UNS S30908 chemical composition is tailored for high-temperature oxidation resistance, corrosion resistance, and weldability, compliant with sa 240/a 240 uns stainless grades standards.

The high chromium (22.0-24.0%) and nickel (12.0-15.0%) content enhance oxidation resistance, while the low carbon content (≤ 0.08%) ensures weldability by reducing carbide precipitation. This composition makes ASTM A240/ASME SA240 UNS S30908 ideal for high-temperature applications compared to sa 240/a 240 uns s31600, which prioritizes chloride resistance.

Element	Percentage (%)
Chromium (Cr)	22.0 – 24.0
Nickel (Ni)	12.0 – 15.0
Carbon (C)	≤ 0.08
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 0.75
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.03
Iron (Fe)	Balance (~60%)

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ASTM A240/ASME SA240 UNS S30908 Mechanical Properties

 

The ASTM A240/ASME SA240 UNS S30908 mechanical properties offer a balance of strength, ductility, and high-temperature performance, ideal for demanding applications.

These properties ensure that ASTM A240/ASME SA240 UNS S30908 stainless steel 309S sheet can withstand mechanical stresses in high-temperature environments while maintaining corrosion resistance. Solution annealing at 1040-1120°C (1904-2048°F) optimizes UNS S30908 mechanical properties for oxidation resistance and durability.

Property	Value at 20°C	Value at 540°C (1000°F)
Tensile Strength (MPa)	≥ 515 (75 ksi)	≥ 350 (51 ksi)
Yield Strength (MPa)	≥ 205 (30 ksi)	≥ 140 (20 ksi)
Elongation (%)	≥ 40	≥ 45
Hardness (HRB)	≤ 95	-
Density	8.0 g/cm³ (0.289 lb/in³)	-

At Gangsteel, we’ve seen clients use sa 240/a 240 uns s30908 sheets in industrial furnaces, where its high-temperature performance surpasses sa 240/a 240 uns s30400.

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ASTM A240/ASME SA240 UNS S30908 Specifications and Forms

 

As a trusted uns stainless supplier, Gangsteel supplies sa 240/a 240 uns s30908 sheets, plates, coils, bars, and custom components, compliant with sa 240/a 240 uns stainless grades standards:

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

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: ASTM A240, ASME SA240
• Applications: sa 240/a 240 uns s30908 sheets for furnace components, UNS S30908 plates for heat exchangers

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 S30908 bars for high-temperature fittings

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 furnace and chemical processing 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 S30908 material specifications.

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Applications of ASTM A240/ASME SA240 UNS S30908 Stainless Steel 309S Sheet

 

ASTM A240/ASME SA240 UNS S30908 stainless steel 309S sheetis designed for industries requiring high-temperature oxidation resistance and weldability. Its low carbon content ensures durability in welded structures, while its high chromium and nickel content provide excellent performance in cyclic high-temperature conditions.

Key ASTM A240/ASME SA240 UNS S30908 applications include:

• Furnace Components: sa 240/a 240 uns s30908 sheets for furnace linings and heat shields.
• Heat Exchangers: UNS S30908 plates for high-temperature chemical processing.
• Power Generation: ASTM A240/ASME SA240 UNS S30908 bars for boiler components and superheaters.
• Petrochemical: Piping and fittings for high-temperature environments.
• Chemical Processing: Equipment requiring oxidation resistance.

Case Study: A chemical plant in the UAE used sa 240/a 240 uns s30908 sheets for welded reactor linings, reducing oxidation-related downtime by 25% compared to sa 240/a 240 uns s30409.

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ASTM A240/ASME SA240 UNS S30908 vs Related Grades

 

To aid in material selection, here’s a comparison of sa 240/a 240 uns s30908 with sa 240/a 240 uns s30909, sa 240/a 240 uns s31008, and sa 240/a 240 uns s30409:

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 S30908	ASME SA240 UNS S30909	ASME SA240 UNS S31008	ASME SA240 UNS S30409
UNS Number	S30908	S30909	S31008	S30409
Type	Austenitic	Austenitic	Austenitic	Austenitic
Chromium Content	22.0-24.0%	22.0-24.0%	24.0-26.0%	18.0-20.0%
Nickel Content	12.0-15.0%	12.0-15.0%	19.0-22.0%	8.0-10.5%
Carbon Content	≤ 0.08%	0.04-0.10%	≤ 0.08%	0.04-0.10%
Corrosion Resistance	Good, enhanced weldability	Good in high temps	Excellent in high temps	Good in mild environments
Strength	Moderate	High at high temps	High at high temps	High at high temps
Temp Range	Up to 1000°C (1832°F)	Up to 1000°C (1832°F)	Up to 1150°C (2102°F)	Up to 870°C (1598°F)
Cost (USD/kg)	6-12	6-12	8-15	5-10
Applications	Furnace, chemical processing	High-temp chemical	Furnace, high-temp	High-temp chemical

• ASTM A240/ASME SA240 UNS S30908 vs ASME SA240 UNS S30909: S30908 offers enhanced weldability due to lower carbon, ideal for welded high-temperature applications, while sa 240/a 240 uns s30909 provides better creep resistance.
• ASTM A240/ASME SA240 UNS S30908 vs ASME SA240 UNS S31008: S30908 is cost-effective for moderate high-temperature applications, while sa 240/a 240 uns s31008 offers superior oxidation resistance for extreme temperatures.
• ASTM A240/ASME SA240 UNS S30908 vs ASME SA240 UNS S30409: S30908 provides better high-temperature oxidation resistance due to higher chromium and nickel, while sa 240/a 240 uns s30409 is suited for milder high-temperature environments.

Conclusion: Choose sa 240/a 240 uns s30908 for welded high-temperature applications, sa 240/a 240 uns s30909 for creep resistance, sa 240/a 240 uns s31008 for extreme temperatures, or sa 240/a 240 uns s30409 for cost-effective high-temperature uses.

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ASTM A240/ASME SA240 UNS S30908 Equivalent Materials

 

ASTM A240/ASME SA240 UNS S30908aligns 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 S30908 a versatile choice for high-temperature applications.

Standard	Grade
UNS	S30908
W.Nr.	1.4833
EN	X12CrNi23-13
JIS	SUS 309S
GB	0Cr23Ni13
ASTM	A240 309s
ASME	SA240 309s

Note: ASTM A240/ASME SA240 UNS S30908 equivalent grades comply with sa 240/a 240 uns stainless grades, JIS, and GB standards, offering interchangeability with sa 240/a 240 uns s31008 for high-temperature applications.

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ASTM A240/ASME SA240 UNS S30908 Allowable Stress

The allowable stress values for ASTM A240/ASME SA240 UNS S30908, per ASME BPVC Section II, Part D, ensure reliable performance in high-temperature applications.

These values reflect the material’s ability to withstand mechanical stresses at elevated temperatures, making it suitable for demanding environments like furnaces and heat exchangers.

Temperature (°C)	Allowable Stress (MPa)
100	155
200	145
300	135
400	125
500	115
600	105

Note: These values ensure sa 240/a 240 uns s30908 performs reliably in furnace linings and heat exchanger components.

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ASTM A240/ASME SA240 UNS S30908 Price

 

The ASTM A240/ASME SA240 UNS S30908 price per kg ranges from USD 6-12 per kg (FOB), influenced by several factors:

The balance of high-temperature performance and cost makes ASTM A240/ASME SA240 UNS S30908 a preferred choice for industrial applications requiring durability and oxidation resistance.

• Alloy Content: Higher chromium and nickel content compared to sa 240/a 240 uns s30400 increases costs.
• Market Demand: High demand in furnace and chemical industries drives UNS S30908 price.
• Product Form: ASTM A240/ASME SA240 UNS S30908 plates may cost more than sheets due to processing complexity.
• Global Supply Chain: Freight and raw material availability impact ASTM A240/ASME SA240 UNS S30908 cost.

For a precise ASTM A240/ASME SA240 UNS S30908 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 s30908 for various applications:

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

• 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 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 s2304: Lean duplex for structural applications.
• sa 240/a 240 uns s31803: Duplex for marine 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: Duplex for high-strength applications.
• sa 240/a 240 uns s32550: Enhanced sulfuric acid resistance.

Note: These grades complement sa 240/a 240 uns s30908 in high-temperature, chemical, and furnace 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 S30908 and ASME SA240 UNS S30909?

A: ASTM A240/ASME SA240 UNS S30908 offers enhanced weldability due to lower carbon content, ideal for welded high-temperature applications, while sa 240/a 240 uns s30909 provides better creep resistance for high-temperature environments.

Q: Is ASTM A240/ASME SA240 UNS S30908 suitable for furnace applications?

A: Yes, its high chromium and nickel content ensure excellent oxidation resistance, making it ideal for furnace linings compared to sa 240/a 240 uns s30409.

Q: How does the price of ASTM A240/ASME SA240 UNS S30908 compare to ASME SA240 UNS S31008?

A: ASTM A240/ASME SA240 UNS S30908 is typically 20-30% less expensive than sa 240/a 240 uns s31008 due to lower nickel content, offering cost-effective performance for moderate high-temperature applications.

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Contact Us

 

For sa 240/a 240 uns s30908 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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Long-Tail Keywords

 

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