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Jisco Bright Polished BA 8K Mirror 430 Stainless Steel Sheet Cold Rolled and Corrosion Resistant

Certification	AISI, ASTM
Minimum Order Quantity	150 kg
Price	US $1.34-2.34 / kg

Product Details

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 HRB (max), 183 HB (max)
Density	7750 Kg/m3	Elastic Modulus	200 GPa
Thermal Conductivity	26.1 W/m.K (at 100°C)
Highlight	Bright Polished Stainless Steel Sheet , Cold Rolled 430 Stainless Steel Sheet , Corrosion Resistant BA 8K Mirror Stainless Steel Sheet

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Product Description

JISCO Bright Polished BA 8K Mirror 430 Stainless Steel Sheet

Premium quality 430 stainless steel sheets with bright polished BA 8K mirror finish, available for immediate delivery from stock.

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 Service	Slit Cutting, Surface Processing

430 Stainless Steel Introduction

Stainless steel grade 430 is a non-hardenable steel containing straight chromium, belonging to the ferritic group of steels. This material is recognized for its excellent corrosion resistance, superior formability, and practical mechanical properties, making it suitable for various chemical applications.

Grade 430F stainless steel is typically supplied in bar form for automatic screw machine applications, while grade 434 offers similar properties with enhanced corrosion resistance due to its molybdenum content.

Chemical Composition

The chemical composition of grade 430 stainless steel meets the following specifications:

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 Alternative
430F	Higher machinability needed in bar product with acceptable reduced corrosion resistance
434	Better pitting resistance required
304	Higher corrosion resistance needed with improved welding and cold forming capabilities
316	Superior corrosion resistance required with enhanced welding and cold forming abilities
3CR12	Lower corrosion resistance acceptable for cost-critical applications

Performance Characteristics

Corrosion Resistance

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

Heat Resistance

Stainless steel grade 430 resists oxidation up to 870°C (1598°F) in intermittent service and up to 815°C (1499°F) in continuous service. Embrittlement may occur at room temperature after prolonged exposure to 400-600°C (752-1112°F) range, which can be mitigated through annealing.

Heat Treatment

Solution annealing involves 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 requires heating to 760-815°C (1400-1499°F) with subsequent 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 before welding. Post-weld annealing at 790-815°C (1454-1499°F) can address embrittlement in welded areas. Recommended filler rods include grade 430, 308L, 309, or 310 based on application requirements.

Machining & Fabrication

Grade 430 offers superior machinability compared to standard austenitic steels like grade 304, though galling may occur. The material features a low work hardening rate that facilitates bending and forming operations, though low ductility may limit rigorous operations. Sub-critical intermediate annealing may be necessary for extreme cold working applications.

Applications