Stainless steel AISI 420F / EN 1.4028

Stainless Steel AISI 420F / EN 1.4028 / 30Х13: Properties, Applications, and Features

✅ General Technical Characteristics

Steel AISI 420F (EN 1.4028, 30Х13) is a martensitic stainless steel known for its high hardness, strength, and good corrosion resistance in moderately aggressive environments. Due to its increased carbon content and the addition of sulfur, this alloy offers improved machinability and excellent mechanical properties.

Main Characteristics:

• High mechanical strength and wear resistance.
• Good corrosion resistance in mildly acidic and humid environments.
• Excellent machinability due to sulfur content.
• Good heat treatability – can be hardened to increase hardness.
• Suitable for use in mechanical engineering, tool manufacturing, and cutting edge production.

🔬 Chemical Composition AISI 420F / EN 1.4028 (%)

• Carbon (C): 0.26 – 0.35
• Silicon (Si): ≤ 1.0
• Manganese (Mn): ≤ 1.50
• Phosphorus (P): ≤ 0.040
• Sulfur (S): 0.15 – 0.35
• Chromium (Cr): 12.0 – 14.0
• Molybdenum (Mo): ≤ 0.60

💡 The addition of sulfur enhances machinability but may reduce impact toughness.

🏭 Applications

Steel AISI 420F (EN 1.4028, 30Х13) is widely used in various industries requiring high hardness, strength, and corrosion resistance.

Main Application Areas:

• Production of cutting tools and blades.
• Medical and surgical instruments.
• Valve components, spindles, and other mechanical parts.
• Automotive and mechanical engineering industries.
• Precision mechanisms requiring high strength and wear resistance.

📊 Mechanical Properties

• Tensile Strength (Rm): 850 – 1000 MPa
• Yield Strength (Rp0.2): ≥ 500 MPa
• Hardness (HB): 230 – 300 HB (after heat treatment)
• Elongation (A5): ≥ 10 %

⭐ Features

• High hardness – after hardening, the steel gains significant strength.
• Good machinability – easy to process mechanically.
• Moderate corrosion resistance – resistant to moisture and mild acids.
• Wear resistance – ideal for tools and high-load components.
• Heat resistance – maintains mechanical properties at moderate temperatures.

Steel AISI 420F / 1.4028 / 30Х13 offers an optimal combination of strength, corrosion resistance, and ease of processing, making it highly demanded in various industries.

AISI 420F / EN 1.4028 steel delivery forms