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Stainless Steel - Grade 430/1.4016

Description

Grade 430/1.4016 stainless steel is a ferritic, non-hardenable chromium stainless steel known for its good corrosion resistance, formability, and aesthetic finish. It is commonly used in applications where moderate corrosion resistance is required, along with good mechanical properties.

Chemical Composition

The typical chemical composition of Grade 430 stainless steel is as follows:

Element Composition (%)
Carbon (C) 0.0 - 0.12
Manganese (Mn) 0.0 - 1.0
Silicon (Si) 0.0 - 1.0
Phosphorus (P) 0.0 - 0.04
Sulfur (S) 0.0 - 0.03
Chromium (Cr) 16.0 - 18.0
Nickel (Ni) 0.0 - 0.75
Iron (Fe) Balance

Mechanical Properties

The mechanical properties of Grade 430 stainless steel in the annealed condition are:

Property Value
Tensile Strength (UTS) Minimum 450 MPa (65 ksi)
Yield Strength (0.2% YS) Minimum 205 MPa (30 ksi)
Elongation Minimum 22% in 50.8 mm (2 in)
Hardness (HB) Maximum 89 HRBW

Thermal & Physical Properties

The thermal and physical properties are as follows:

Property Value
Density 7.74 g/cm³ (0.28 lb/in³)
Thermal Conductivity 15.0 W/(m•K) at room temperature
Modulus of Elasticity 200 GPa (29 x 10³ ksi)
Coefficient of Thermal Expansion 10.4 μm/m-°C (20-300°C)
Electrical Resistivity 60 μ ohm.cm
Thermal Conductivity 26.1 W/m-K

Other Designations

Grade 430 corresponds to several designations, including:

  • UNS: S43000
  • EN-DIN : 1.4016
  • BS: 430S17
  • Fabrication and Heat Treatment

    Grade 430/1.4016 stainless steel can be easily fabricated using standard methods. Key points include:

  • Machining: It is relatively easy to machine but requires sharp cutting tools to prevent work hardening.
  • Welding: It can be welded using common techniques, but preheating to 150-200°C is recommended to prevent embrittlement.
  • Heat Treatment: Annealing is performed at 815°C, followed by air cooling. It cannot be hardened by heat treatment.
  • Applications

    Grade 430/1.4016 stainless steel is widely used in:

  • Domestic appliances (e.g., washing machines, dishwashers, refrigerators)
  • Automotive trim
  • Decorative applications
  • Scientific apparatus
  • Fasteners and flue linings
  • Supplied Forms

    Grade 430/1.4016 stainless steel is available in various forms, including:

  • Sheets
  • Coils
  • Strips
  • Features

  • Good corrosion resistance in mild environments
  • Aesthetic appeal due to its finish quality
  • Fair formability and weldability
  • Excellent resistance to nitric attack
  • This datasheet provides a comprehensive overview of Grade 430 stainless steel, highlighting its properties, applications, and processing requirements.