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439 Ferritic Stainless Steel Sheet 4FT*8FT for High-Temperature Applications

Luogo di origine	Cina
Marca	TISCO
Certificazione	ISO
Numero di modello	439
Quantità di ordine minimo	500 kg
Prezzo	1.5 - 2USD/Kg
Imballaggi particolari	imballaggio standard per l'esportazione
Tempi di consegna	5 - 12 giorni in base alla quantità
Termini di pagamento	L/C, T/T, Western Union
Capacità di alimentazione	20ton a settimana

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Dettagli

prodotti	Lamiera di acciaio inossidabile	Grado	439
Spessore	0,5 - 10,0	Tecnologia	Arrotolato a freddo
Larghezza	1219mm	Superficie	2B 2D N.1
Standard	BACCANO DELL'EN DI ASTM GB JIS	MOQ	1 tonnellata

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Descrizione di prodotto

**439 Ferritic Stainless Steel Sheet 4FT*8FT for High-Temperature Applications**

Stainless Steel Plate Specifications

Name	439 stainless steel Plate
Our Grade	200 Series: 201 202 300 Series: 301 304,304L,304H,309S,310S,314,316L,316Ti,316H,316LN,317L,321,329,347 400 Series: 409L,410,410S,415,416,420,430,431,436L.439,441,443,444,445,446 Super Stainless Steel: 904L,926,254SMO,654SMO,15-5PH,17-4PH,17-7PH.etc Nickel Alloy: C276, C22,G35,Alloy X,Monel 400,K500,Inconel 600,601,617,625,718,Incoloy 800,800H,800HT,825.etc
Technique	Hot Rolled, Cold Rolled,Forged
Standard	JIS, AISI, ASTM, DIN, TUV, BV, SUS, etc
Thickness	0.1 – 80.0mm
Width range	10mm – 2000mm
Length	Customized
Finish	2B,2D,NO.1, BA, No.4, 8k, Brushed,Hairline,PVD Coating,Sandblasted
Service	Laser Cutting, Bending
Sample	Available

439 Ferritic Stainless Steel Sheet – 4FT × 8FT for High-Temperature Applications

Product Overview

Grade 439 ferritic stainless steel sheet in standard 4 feet by 8 feet (1219 mm × 2438 mm) dimensions is engineered specifically for demanding high-temperature environments, including automotive exhaust systems, industrial heat exchangers, burner components, and flue ducts. As a titanium-stabilized ferritic stainless steel, Grade 439 delivers exceptional resistance to oxidation, thermal fatigue, and intergranular corrosion—making it a reliable, cost-effective alternative to more expensive austenitic grades like 304 or 321.

Available in thicknesses from 0.8 mm to 10.0 mm, the 4FT × 8FT sheet size offers optimal material utilization for fabrication shops, OEMs, and Tier suppliers seeking standardized, easy-to-handle panels with minimal waste.

Why Choose 4FT × 8FT Grade 439 Sheets?

The 4'×8' format is the industry-preferred sheet size in North America and widely adopted globally due to:

Compatibility with standard CNC cutting, laser, and plasma tables
Efficient nesting for stamping and blanking operations
Reduced handling vs. coil processing for medium-volume production
Simplified storage and logistics

When combined with Grade 439’s inherent high-temperature performance, this sheet size becomes ideal for prototyping, batch manufacturing, and replacement part fabrication.

Key Advantages for High-Temperature Use

✅ Oxidation Resistance up to 800°C (1472°F)
Grade 439 forms a stable chromium-rich oxide layer that resists scaling and degradation during prolonged exposure to hot exhaust gases or combustion atmospheres.

✅ Titanium Stabilization
Ti binds carbon and nitrogen, preventing chromium carbide precipitation during welding or service at 500–800°C—eliminating sensitization and ensuring long-term corrosion resistance.

✅ Low Thermal Expansion
Ferritic structure provides ～30% lower coefficient of thermal expansion than austenitic steels, reducing distortion and joint stress during thermal cycling.

✅ Good Thermal Conductivity
Enhances heat dissipation in manifolds and heat shields, improving system efficiency and component life.

✅ Excellent Fabricability
Despite its high-temperature strength, Grade 439 maintains good cold-forming characteristics—suitable for bending, rolling, and deep drawing of complex exhaust geometries.

Technical Specifications

Property	Details
Grade	UNS S43035 / ASTM A240 Type 439 / EN 1.4510 / JIS SUS 439
Dimensions	4 ft × 8 ft (1219 mm × 2438 mm) – standard; custom sizes available
Thickness Range	0.8 mm – 10.0 mm (common automotive gauges: 1.2 mm, 1.5 mm, 2.0 mm)
Surface Finish	2B (standard), BA (Bright Annealed), No.1, or Hairline
Delivery Condition	Annealed and Pickled
Standards	ASTM A240/A240M, EN 10088-2, JIS G4305
Certifications	ISO 9001, IATF 16949, RoHS compliant; Mill Test Reports (MTRs) included

Chemical Composition (Typical, wt%)

Element	C	Si	Mn	P	S	Cr	Ni	N	Ti
Max/Range	≤0.03	≤1.0	≤1.0	≤0.04	≤0.03	17.0–19.0	≤0.5	≤0.04	≥0.2 + 4×(C+N); ≤1.10

Note: Precise Ti control ensures optimal stabilization without excessive grain coarsening.

Mechanical & Physical Properties (Annealed)

Property	Value
Tensile Strength	450–600 MPa
Yield Strength (0.2% offset)	≥280 MPa
Elongation	≥25% (in 50 mm)
Hardness (HRB)	≤88
Density	7.70 g/cm³
Thermal Conductivity (100°C)	～26 W/m·K
Coefficient of Thermal Expansion (20–100°C)	10.4 × 10⁻⁶ /°C
Max Continuous Service Temp	800°C (1472°F)

Common High-Temperature Applications

Automotive Exhaust Manifolds – Resists thermal shock and oxidation
Catalytic Converter Housings – Maintains integrity under cyclic heating
Mufflers & Resonators – Combats internal acid condensation and external road salt
Industrial Burner Tubes & Flues – Withstands combustion byproducts
Heat Shields & Exhaust Wraps – Reflects and dissipates radiant heat
Agricultural & Construction Equipment Exhausts – Durable in harsh operating conditions

Comparison: Grade 439 vs. Alternatives

Feature	439	409	430	304
Max Use Temp (°C)	800	650	700	870
Stabilized?	Yes (Ti)	Yes (Ti)	No	No (unless 321)
Weldability (as-welded)	Excellent	Good	Poor	Excellent
Corrosion Resistance	Very Good	Moderate	Good	Excellent
Cost	Low–Medium	Low	Low	High
Thermal Expansion	Low	Low	Low	High

Grade 439 offers the best balance for applications requiring >650°C performance without the premium cost of 300-series alloys.

Quality Assurance

Each 4FT × 8FT sheet is:

Produced via AOD refining for ultra-low interstitial content
Ultrasonically tested (optional for critical uses)
Inspected for surface defects (scratches, pits, roll marks)
Supplied with full EN 10204 3.1 Mill Test Report
Traceable from melt to shipment

Our facility holds IATF 16949 certification, ensuring compliance with automotive quality management systems.

Packaging & Handling

Sheets separated by anti-scratch paper
Bundled with steel strapping on wooden export pallets
Edges protected with corner guards
Waterproof wrapping for ocean freight
Marked with grade, heat number, dimensions, and standards

Sustainability Benefits

100% recyclable with no downgrading
Enables lightweight design (thin gauges reduce system weight)
Long service life = fewer replacements = lower environmental impact
Supports OEM sustainability and circular economy goals

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