what is aisi 430 stainless steel？

What is AISI 430 Stainless Steel?

AISI 430 stainless steel, also known as Type 430 or simply 430 stainless steel, is one of the most popular, cost-effective, and widely used grades of stainless steel in the world today.

The designation “AISI 430” comes from the American Iron and Steel Institute (AISI) numbering system. It belongs to the 400 series and is classified as a straight-chromium ferritic stainless steel with 16–18% chromium and very little or no nickel.

At Gangsteel, we are a trusted direct exporter and authorized Yongjin 430 agent for genuine material produced by Yongjin Stainless Steel (Yongjin Mill) — one of China’s leading stainless steel producers. Our customers choose AISI 430 because it delivers reliable performance, excellent formability, strong magnetism, superior thermal conductivity, and significant cost savings compared to nickel-bearing grades like 304 or 316.

Key Characteristics of AISI 430 Stainless Steel

• Family: Ferritic (body-centered cubic structure)
• Main alloying element: Chromium (16.00–18.00%)
• Nickel content: ≤ 0.75% (typically < 0.50% or trace in real production)
• Structure: Fully ferritic — remains strongly magnetic in all conditions
• Thermal conductivity: ≈ 26 W/m·K (≈60% higher than 304)
• Thermal expansion: 10.5 × 10⁻⁶/°C (≈35% lower than 304)
• Corrosion resistance: Good in mild atmospheres, fresh water, and mild acids; limited in chlorides
• Formability: Excellent — easy deep drawing and stamping
• Cost: 30–50% lower than 304 due to no nickel

Chemical Composition of AISI 430 Stainless Steel

Mechanical Properties (Annealed Condition)

Common Equivalent Designations Worldwide

All these names refer to the same high-quality alloy.

Most Common Real-World Applications of AISI 430 Stainless Steel

AISI 430 is chosen for high-volume production where cost, magnetism, and thermal performance matter most:

• Household appliances— refrigerator doors, washing machine panels, range hoods, microwave interiors
• Kitchenware— sinks, countertops, pots, pans, baking trays, utensils
• Architectural & decorative— elevator interiors, wall cladding, column covers, decorative trim
• Automotive— interior trim, exhaust system parts, wheel covers
• Furniture & hardware— cabinet fronts, handles, table frames
• Electrical— enclosures, brackets, heat shields
• Food equipment— mild-contact surfaces (dry foods, dairy, non-acidic processing)

Why Customers Worldwide Choose AISI 430 from Gangsteel

• Low or no nickel= stable pricing and 30–50% cost savings versus 304
• Strong magnetism= perfect for magnetic knife holders and automated assembly lines
• High thermal conductivity= faster, more even heating in cooking applications
• Low thermal expansion= less warping during temperature changes
• Beautiful surface finishes= 2B, BA, NO.4, HL — all available directly from the mill
• Reliable quality= consistent chemistry and uniform surface from Yongjin Mill

For the same high-quality AISI 430 material, please see our product pages:

• a240 Type_430 stainless steel sheet
• EN10088 2 X6Cr17 stainless steel sheet
• DIN 1.4016 stainless steel sheet
• GB/T 10Cr17 1Cr17 stainless steel sheet
• JIS G4305 SUS 430 stainless steel sheet

FAQ

Is AISI 430 the same as 430 stainless steel?

Yes — AISI 430 is the full American designation for Type 430 stainless steel.

Is 430 stainless steel good quality?

Yes — excellent quality for cost-sensitive applications in mild environments.

Does AISI 430 contain nickel?

Very little — maximum 0.75%, usually much lower (typically <0.50%).

Is AISI 430 magnetic?Y

es — strongly magnetic in all conditions.

Can AISI 430 be used for food contact?

Yes — widely accepted for mild food contact with smooth 2B or BA finish.

If you need current pricing, free samples, or a detailed comparison between AISI 430 and other grades (304, 316, 201, etc.) for your specific project, our team is ready to help.

Contact Gangsteel today for genuine, high-quality AISI 430 stainless steel at factory-direct prices with fast delivery and full traceability.

We look forward to supporting your success.