17-4PH Stainless Steel Rod & Plate

17-4PH Stainless Steel Rod & Plate

17-4PH rod is a precipitation-hardening martensitic stainless steel. It is available in round, square, and hexagonal shapes. This material offers high strength, excellent corrosion resistance, good weldability, and easy machining. Due to these properties, 17-4PH rods are commonly used in aerospace components, chemical processing equipment, and marine applications like pump shafts and valve parts.

17-4PH plate is also a precipitation-hardening martensitic stainless steel. It is typically available in flat, rectangular sheets. The material is known for its high strength, good toughness, corrosion resistance, and ease of fabrication. These plates are often used in structural parts for aircraft, gas turbines, and nuclear reactors, as well as medical instruments and food processing machinery.

Chemical Compositions

Element	Carbon (C)	Manganese (Mn)	Silicon (Si)	Chromium (Cr)	Nickel (Ni)	Copper (Cu)	Molybdenum (Mo)	Sulfur (S)	Phosphorus (P)	Vanadium (V)

Content (%)	≤ 0.07	≤ 1.00	≤ 1.00	15.00 – 17.50	3.00 – 5.00	3.00 – 5.00	≤ 0.50	≤ 0.030	≤ 0.040	≤ 0.10

Mechanical Properties

Properties	Metric Unit	Imperial Unit

Tensile Strength	515 – 750 MPa	74.7 – 108.7 ksi
Yield Strength	205 MPa	29.7 ksi
Vickers Hardness	152 – 200 HV	-
Brinell Hardness	146 – 217 HB	-
Rockwell Hardness	79 HRB	-
Elongation	35%	35%
Elastic Modulus	193 GPa	28.0 × 10^6 psi