AISI 420F Mod / 1.4197 Stainless Steel

✅ General Technical CharacteristicsStainless steel 1.4197 (X20CrNiMoS13-1) is a corrosion-resistant martensitic steel with added sulfur, ensuring improved machinability. This material belongs to the group of free-cutting steels, offering high strength and corrosion resistance, making it highly sought after in various industries.
🔹 Main Characteristics:
✔️ High hardness and wear resistance.
✔️ Improved machinability due to sulfur content.
✔️ Good corrosion resistance in low and medium-aggressiveness environments.
✔️ Excellent tensile strength.
🔬 Chemical Composition of 1.4197 / X20CrNiMoS13-1 (%)C (Carbon): 0.17 – 0.22
Si (Silicon): ≤ 1.0
Mn (Manganese): ≤ 1.5
P (Phosphorus): ≤ 0.04
S (Sulfur): 0.15 – 0.35
Cr (Chromium): 12.5 – 14.5
Ni (Nickel): 0.8 – 2.0
Mo (Molybdenum): 0.2 – 0.8
💡 The addition of sulfur enhances the steel’s machinability but may reduce its toughness and impact resistance.
🏭 ApplicationsStainless steel 1.4197 (X20CrNiMoS13-1) is widely used in mechanical engineering and the manufacturing of precision components requiring high accuracy and good machinability.
🔹 Main Application Areas:
✔️ Production of precision parts.
✔️ Automatic metal processing (milling, drilling, turning).
✔️ Manufacturing of shafts, gears, and axles.
✔️ Components for pumps and valves.
✔️ Parts operating in environments with moderate corrosion exposure.
Due to its excellent combination of strength and corrosion resistance, this material is in demand for equipment in the chemical, food, and petrochemical industries.
📊 Mechanical PropertiesTensile Strength (Rm): 800 – 1000 MPa
Yield Strength (Rp0.2): ≥ 600 MPa
Hardness (HB): 250 – 320 HB
Elongation (A5): ≥ 10 %
⭐ Features✔️ High machinability – thanks to sulfur content, this steel is well-suited for automatic machining on lathes.
✔️ Corrosion resistance – resistant in moderately aggressive environments but not recommended for highly acidic or chloride-rich conditions.
✔️ Strength and hardness – combines good mechanical strength with excellent wear resistance.
✔️ Application in precision mechanics – used in components requiring high processing accuracy and stable mechanical properties.

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Forms of delivery of steel products EN 1.4197