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ASTM A240 430 Stainless Steel Sheet with NO.4 Finishing and Corrosion Resistance

China ASTM A240 430 Stainless Steel Sheet with NO.4 Finishing and Corrosion Resistance

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ASTM A240 430 Stainless Steel Sheet with NO.4 Finishing and Corrosion Resistance

MOQ： 100 kg
Price： US $1.48-2.66 / kg
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Model NO.	430
Shape	Flat
Technique	Cold Rolled
Surface Treatment	Bright
Specification	12202440, 15003000, 15006000, 20006000mm
Thickness	0.3 - 3.0mm (cold rolled), 4.0 - 10.0mm (hot rolled)
Standard Size	10002000mm, 12192438mm (cold rolled), 1500*6000mm (hot rolled)
Surface	2B BA NO.4 Hailrline Mirror 8K
Tensile Strength	483 MPa (min)
Yield Strength	310 MPa (min)
Elongation	22% (min)
Hardness	85 HR B (max), 183 HB (max)
Density	7750 kg/m3
Elastic Modulus	200 GPa
Thermal Conductivity	26.1 W/m.K (at 100°C), 26.3 W/m.K (at 500°C)
Certification	AISI, ASTM

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Product Specification


Model NO.	430	Shape	Flat
Technique	Cold Rolled	Surface Treatment	Bright
Specification	12202440, 15003000, 15006000, 20006000mm	Thickness	0.3 - 3.0mm (cold rolled), 4.0 - 10.0mm (hot rolled)
Standard Size	10002000mm, 12192438mm (cold rolled), 1500*6000mm (hot rolled)	Surface	2B BA NO.4 Hailrline Mirror 8K
Tensile Strength	483 MPa (min)	Yield Strength	310 MPa (min)
Elongation	22% (min)	Hardness	85 HR B (max), 183 HB (max)
Density	7750 kg/m3	Elastic Modulus	200 GPa
Thermal Conductivity	26.1 W/m.K (at 100°C), 26.3 W/m.K (at 500°C)	Certification	AISI, ASTM
High Light	ASTM A240 430 Stainless Steel Sheet ，NO.4 Finishing Stainless Steel Sheet ，Corrosion Resistant AISI430 Sheet

ASTM A240 430 Stainless Steel Sheet

AISI430 stainless steel cold rolled SS sheet with NO.4 finishing, offering excellent corrosion resistance and formability for industrial applications.

Product Specifications

Product: 430 Stainless Steel Sheet

Thickness: Cold rolled 0.3-3.0mm, Hot rolled 4.0-10.0mm

Standard Size: Cold rolled 1000×2000mm, 1219×2438mm; Hot rolled 1500×6000mm

Surface: 2B, BA, NO.4, Hairline, Mirror, 8K, etc.

Brand: TISCO, JISCO, POSCO, BAOSTEEL

Standard: ASTM A240 / JIS G4305 / EN 10088-2

Other Grades: 201, 202, 301, 304, 304L, 309S, 310S, 316L, 316Ti, 317L, 321, 347, 410, 420, 430, 440, 441, 443, 444, 2205, 2507, etc.

Our Services: Slit cutting, surface processing

430 Stainless Steel Overview

Stainless steel grade 430 is a non-hardenable steel containing straight chromium, belonging to the ferritic group of steels. Known for its good corrosion resistance and formability, coupled with practical mechanical properties, it can be used in various chemical applications.

Key Properties

Grade 430 stainless steel offers excellent stress corrosion cracking resistance with properties covered under ASTM A240/A240M standards.

Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
430	- 0.12	- 1	- 1	- 0.04	- 0.030	16-18	-	- 0.50	-
430F	- 0.12	- 1.25	- 1	- 0.06	0.15 -	16-18	-	-	-

Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness Rockwell B (HR B) max	Hardness Brinell (HB) max
430	483	310	22	85	183
430F	552 typical	379 typical	25 typical	-	262

Physical Properties

Grade	Density (kg/m³)	Elastic Modulus (GPa)	Thermal Expansion (μm/m/°C)	Thermal Conductivity (W/m.K)	Specific Heat (J/kg.K)	Electrical Resistivity (nΩ.m)
430	7750	200	10.4	26.1	460	600
430F	7750	200	10.4	26.1	460	600

Grade Specification Comparison

Grade	UNS No	British BS	British En	Euronorm No	Euronorm Name	Swedish SS	Japanese JIS
430	S43000	430S17	60	1.4016	X8Cr17	2320	SUS 430
430F	S43020	-	-	1.4104	X12CrMoS17	2383	SUS 430F

Alternative Grades

Grade	Reasons for choosing 430
430F	Higher machinability than 430 is needed in bar product, and reduced corrosion resistance is acceptable
434	Better pitting resistance is required
304	Slightly higher corrosion resistance is needed, together with greatly improved ability to be welded and cold formed
316	Much better corrosion resistance is needed, coupled with greatly improved ability to be welded and cold formed
3CR12	Lower corrosion resistance is acceptable in a cost-critical application

Performance Characteristics

Corrosion Resistance

All ferritic grades, including stainless steel grade 430, have excellent stress corrosion cracking resistance. Grade 430 provides good corrosion resistance to numerous substances, with maximum resistance in well-polished or buffed condition. Its pitting and crevice corrosion resistance is similar to grade 304.

Heat Resistance

Stainless steel grade 430 can resist oxidation up to 870°C (1598°F) in intermittent usage and up to 815°C (1499°F) in continuous usage. Brittleness may occur at room temperature after prolonged heating in the 400-600°C (752-1112°F) range, which can be overcome with annealing.

Heat Treatment

Solution annealing is performed by heating to 815-845°C (1499-1553°F), followed by slow furnace cooling to 600°C (1112°F) and rapid air-cooling. Sub-critical annealing involves heating to 760-815°C (1400-1499°F) followed by air-cooling or water quenching. This stainless steel cannot be hardened by thermal treatment.

Welding

Pre-heating at 150-200°C (302-392°F) is required for welding grade 430. Post-weld annealing at 790-815°C (1454-1499°F) may be necessary if embrittlement occurs. Recommended filler rods include grade 430, 308L, 309, or 310 based on application requirements.

Machining

Grade 430 offers better machinability than standard austenitic steels like grade 304, though galling may occur. Lightly drawn bars are easier to machine than annealed bars. Grade 430F provides excellent machinability.

Fabrication

With a low work hardening rate, grade 430 facilitates easy bending and forming. However, low ductility limits rigorous operations. Grade 430 wire can handle rigorous cold heading, with sub-critical intermediate annealing potentially required for extreme cold working.

Applications

Dish washer linings
Refrigerator cabinet panels
Element supports and fasteners
Stove trim rings and chimney liners
Automotive trim and lashing wires

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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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