17-4PH Round Steel in Continuous Supply | Direct Factory Sale of 17-4PH Round Bar Solution Heat Treated

17-4PH material is an American grade, a martensitic precipitation-hardening stainless steel, equivalent to China's grade: 0Cr17Ni4Cu4Nb. 17-4PH is a precipitation-hardening steel grade that adds copper. It is used for manufacturing shafts and steam turbine components.

17-4PH Chemical Composition:

Carbon C: ≤0.07

Manganese (Mn): ≤1.00

Silicon (Si): ≤1.00

Chromium (Cr): 15.5~17.5

Nickel (Ni): 3.0~5.0

Phosphorus P: ≤0.04

Sulfur (S): ≤0.03

Copper (Cu): 3.0~5.0

Nb+Ta: 0.15~0.45

17-4PH stainless steel is a martensitic precipitation-hardening stainless steel with a hardness of HR4. It boasts high strength, hardness, and corrosion resistance and is not suitable for temperatures above 300°C. It exhibits excellent corrosion resistance against atmosphere, diluted acids, or salts, comparable to 304 and 430 stainless steels. It is used in the manufacturing of offshore platforms, turbine blades, valve seats, stems, sleeves, and rods.

17-4PH，S17400，Alloy630，0Cr17Ni4Mo4Nb，1.4542

Physical Properties:
Density: 7.78 g/cm³
Melting Point: 1400-1440 °C
Elastic Modulus: 191 GPa
Thermal Conductivity: 23.0 λ / W(m·K)-1
Hardness: -Brinell 360
Coefficient of thermal expansion (20 - 100°C): 11.16 α/(10^-6/°C)
Operating Temperature Range: -200 to +300°C