17.4PH Stainless Steel Round Bar

A comprehensive overview of 17.4PH stainless steel round bars, covering their composition, properties, applications, processing methods, standards, and surface finish options. 

When selecting this material for specific applications, it's essential to consider its properties and suitability for the intended use case, consulting with material engineers or suppliers if necessary.

Chemical Composition (Min-Max):

Mechanical Properties:

• Tensile Strength: 1030 MPa - 1190 MPa
• Yield Strength: 860 MPa - 1000 MPa
• Elongation at Break: 14% - 18%
• Hardness: Typically around 28 - 36 HRC (Rockwell C hardness)

Physical Properties:

• Density: Approximately 7.75 g/cm³
• Thermal Conductivity: Around 15 W/(m·K) at room temperature
• Specific Heat Capacity: Approximately 0.46 J/(g·K)
• Melting Point: Typically around 1399 - 1444°C (2550 - 2630°F)
• Magnetic Properties: Generally magnetic in the hardened condition

Applications:

• 17-4PH stainless steel round bars are commonly used in applications requiring high strength, corrosion resistance, and good mechanical properties, such as in aerospace, marine, and oil & gas industries.
• They are suitable for making components like shafts, gears, valves, and fittings.

Processing:

• 17.4PH stainless steel round bars can be processed through various methods including hot forging, cold forging, machining, and welding.
• Heat treatment processes such as solution annealing, precipitation hardening, and aging are commonly employed to achieve desired mechanical properties.

Standards: 17.4PH stainless steel round bars typically conform to international standards such as ASTM A564/A564M for hot-rolled and cold-finished bars.

Surface Finish: Surface finish options for 17.4PH stainless steel round bars include black, pickled, bright annealed, or polished, depending on the application requirements.