430 Stainless Steel Bar
The 430 stainless steel bar is the most commonly used ferritic stainless steel bar. Its core feature is that it does not contain nickel, which makes its cost much lower than that of 304 and other austenitic stainless steel bars. At the same time, it has excellent corrosion resistance, thermal conductivity and formability.
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Product Introduction

430 Stainless Steel Bar is a cost-effective ferritic stainless steel that provides good corrosion resistance, excellent formability, and aesthetic appeal at a significantly lower cost than nickel-containing austenitic grades like 304. With 16-18% chromium and no nickel, 430 represents the most widely used ferritic stainless steel in bar form, offering a practical balance between performance and affordability for applications where the superior corrosion resistance of 304 is unnecessary. Its ferritic structure provides natural resistance to stress corrosion cracking and maintains consistent mechanical properties, making it suitable for specific automotive, appliance, and industrial applications.

Available in rounds, squares, flats, hexagons, and special shapes, 430 stainless steel bar is particularly valued for its magnetic properties, consistent thermal expansion (similar to carbon steel), and ease of fabrication. While its corrosion resistance is limited compared to austenitic grades—particularly in chloride-containing environments—430 performs well in indoor atmospheres, mild outdoor conditions, and applications involving organic acids. The grade's cost-effectiveness, combined with adequate performance for many applications, makes it a versatile choice for manufacturers seeking stainless steel benefits without the premium cost of nickel-alloyed grades.

Product parameters


Item / Parameter

Specification for 430 Bar

Notes / Significance

Key Feature

The Nickel-Free Economical Bar Stock. Provides stainless steel appearance and basic corrosion resistance without nickel, offering significant cost savings over 304 stainless steel bar.

The most economical chromium stainless steel bar for general-purpose applications.

Common Designations

UNS S43000
AISI 430
ASTM A276 (Stainless Steel Bars)
EN 1.4016, X6Cr17
JIS SUS430

ASTM A276 is the primary specification for general bar applications.

Chemical Composition (Typical wt.%)

C: ≤ 0.12
Cr: 16.0 - 18.0Mn: ≤ 1.00
Si: ≤ 1.00
Ni: ≤ 0.75 (residual)
P: ≤ 0.040
S: ≤ 0.030

No intentional nickel addition distinguishes it from austenitic grades and controls cost.

Mechanical Properties

Tensile Strength: ≥ 450 MPa
Yield Strength: ≥ 310 MPa
Elongation: ≥ 20%
Hardness: ≤ 183 HB
Machinability: 55% of B1112 steel

Good ductility for forming; lower elongation than austenitic grades but adequate for most applications.

Physical Properties

Density: 7.70 g/cm³
Melting Range: 1425 - 1510 °C
Thermal Expansion: 10.4 × 10⁻⁶/K (20-100°C)
Thermal Conductivity: 26.0 W/m·K (100°C)
Strongly magnetic

Lower thermal expansion than austenitics (304: 17.2 × 10⁻⁶/K) - advantageous for thermal cycling applications.

Available Forms

Rounds: 6mm - 300mm diameter
Squares: 6mm - 150mm
Hexagons: 6mm - 100mm
Flats: Various thicknesses and widths
Angles: Structural angles

Comprehensive size range for various manufacturing needs.

Surface Conditions

Hot Rolled: Black, scaled surface
Cold Drawn: Bright, smooth finish
Centerless Ground: Precision dimensions
Polished: Mirror or satin finishes
Bead Blasted: Matte appearance

Various surface finishes for different application requirements.

Corrosion Resistance

Good resistance to atmospheric corrosion, nitric acid, organic acids, and fresh water. Poor resistance to chlorides and reducing acids.

Suitable for indoor and mild outdoor applications; not recommended for marine or de-icing salt environments.

Machining Characteristics

• Moderate machinability• Better than austenitic grades in some aspects
• Chip control generally good
• Tool wear moderate
• Surface finish achievable

Free-machining variants (430F) available for improved machinability.

Welding Characteristics

Limited weldability
Grain growth in HAZ
Reduced ductility in welds
Post-weld annealing recommended
Matching filler metals essential

More challenging to weld than austenitic grades; requires careful procedure control.

Key Standards

ASTM A276 430: Stainless Steel Bars
ASTM A479 430: Bars for Pressure Vessels
ASTM A484: General Requirements
EN 10088-3: Stainless Steel Bars
JIS G4303: Stainless Steel Bars

Widely available in various finishes and applications.

Common Applications

• Automotive Trim: Molding, trim pieces, decorative elements
• Appliance Components: Refrigerator parts, washing machine drums, range parts
• Architectural: Fasteners, trim, decorative elements (indoor)
• Food Service: Sink accessories, kitchen equipment, utensils
• Industrial: Fasteners, brackets, machinery parts
• Consumer Goods: Cutlery, flatware, household items
• Electrical: Magnetic components, transformer laminations

Cost-effective choice where appearance and moderate corrosion resistance suffice.

Surface selection

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Packaging and transportation

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FACTORY SHOW

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

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