AISI 409 / 1.4512 Stainless Steel

✅ General Technical Characteristics

Stainless steel AISI 409 (EN 1.4512, 08X13T) is a ferritic corrosion-resistant steel with added titanium, which enhances its heat resistance and oxidation stability. It possesses good mechanical properties, high weldability, and is primarily used in the automotive industry and exhaust system manufacturing.

Main Characteristics:

• High corrosion resistance in moderately aggressive environments.
• Improved heat resistance and oxidation stability at high temperatures.
• Good weldability and ease of processing.
• High mechanical strength and wear resistance.
• Excellent resistance to high-temperature gas environments.

🔬 Chemical Composition AISI 409 / EN 1.4512 (%):

• Carbon (C): ≤ 0.03
• Silicon (Si): ≤ 1.0
• Manganese (Mn): ≤ 1.0
• Phosphorus (P): ≤ 0.040
• Sulfur (S): ≤ 0.015
• Chromium (Cr): 10.5 – 12.5
• Titanium (Ti): ≥ 6 x C

💡 The addition of titanium increases the steel’s strength and prevents intergranular corrosion after welding.

🏭 Applications

Steel AISI 409 (EN 1.4512, 08X13T) is widely used in industries requiring corrosion resistance, high strength, and heat resistance.

Main Application Areas:

• Automotive industry (exhaust systems, catalytic converters, mufflers).
• Boiler manufacturing, heat exchangers, and chimney pipes.
• Metal structures and elements for the construction industry.
• Food industry (storage tanks, ventilation systems).
• Ventilation and heating systems.

📊 Mechanical Properties

• Tensile Strength (Rm): 380 – 600 MPa
• Yield Strength (Rp0.2): ≥ 170 MPa
• Hardness (HB): ≤ 200 HB
• Elongation (A5): ≥ 20 %

⭐ Features

• High-temperature oxidation resistance – suitable for exhaust system components.
• Good weldability – easily weldable without losing corrosion resistance.
• High strength and wear resistance – ensures durability of components.
• Heat resistance – maintains properties at temperatures up to 750°C.
• Cost-effective – a more affordable stainless steel option compared to austenitic grades.

AISI 409 / EN 1.4512 / 08Х13Т steel products delivery forms