Stainless steel 1.4105/X6CrMoS17/AISI 430F

General technical characteristics

Stainless steel 1.4105 (European equivalent X6CrMoS17, American standard AISI 430F) is a ferritic corrosion-resistant steel with improved machinability. Due to the addition of sulfur, this grade is classified as free-machining steel, providing excellent machinability while maintaining high corrosion resistance.

Chemical composition of steel 1.4105 (X6CrMoS17 / AISI 430F):

• Carbon (C): ≤ 0.12%
• Chromium (Cr): 16.0-18.0%
• Molybdenum (Mo): 0.20-0.60%
• Sulfur (S): 0.15-0.35%
• Silicon (Si): ≤ 1.00%
• Manganese (Mn): ≤ 1.25%
• Phosphorus (P): ≤ 0.040%
• Iron (Fe): remainder

Mechanical properties

In the supplied condition:

• Hardness: ≤ 230 HB
• Tensile strength (Rm): 450-700 MPa
• Yield strength (Rp0.2): ≥ 280 MPa
• Elongation (A5): ≥ 20%
• Impact toughness: ≥ 60 J/cm²

Physical properties:

• Density: 7.7 g/cm³
• Modulus of elasticity at 20°C: 220 GPa
• Thermal conductivity at 20°C: 25 W/(m·K)
• Specific electrical resistance: 0.60 Ω·mm²/m
• Magnetic properties: ferromagnetic

Temperature characteristics:

• Annealing temperature: 750-850°C
• Hardening temperature: not hardenable
• Maximum operating temperature: 750°C
• Oxidation onset temperature: 850°C

Application

Steel 1.4105 is widely used in the production of:

• Parts requiring intensive machining
• Fasteners
• Shafts and axles
• Valve components
• Automotive components
• Pump equipment parts
• Pipeline fittings
• Metalware products
• Parts for food equipment

Features

Key advantages of steel 1.4105 (AISI 430F):

Machinability:

• Excellent machinability in cutting
• High processing speed
• High-quality surface after machining
• Capability for automated processing

Corrosion resistance:

• Good resistance to atmospheric corrosion
• Resistance to mildly aggressive environments
• Resistance to oxidation at elevated temperatures
• Resistance to food products

Technological characteristics:

• Good weldability (preheating recommended)
• Excellent polishability
• Easily cold-deformed
• Good formability

Economic benefits:

• Optimal price/performance ratio
• Reduced machining costs
• Shortened production cycle
• Increased tool life

Steel products made from 1.4105 steel are supplied as round bars of various diameters. Standard surface finish – calibrated or ground. Each batch is accompanied by a quality certificate confirming the chemical composition and mechanical properties of the material.

The company supplies steel round bars of 1.4105 (AISI 430F) in various diameters from stock and on request. Cutting to size and delivery to any region is available. We guarantee high-quality steel products, compliance with stated specifications, and prompt delivery times.

Available services upon order:

• Incoming quality control
• Cutting to size
• Heat treatment
• Packaging for transportation
• Delivery to the site
• Professional consultation on material selection