17-4 PH Stainless Steel Bar
17-4 PH Stainless Steel Bar is a highly versatile and widely used precipitation-hardening alloy used in various aerospace, nuclear energy, and chemical processing applications. One of the original “PH” (precipitation hardening) grades, 17-4 delivers a combination of oxidation and corrosion resistance, along with high strength, toughness, and the capability of achieving numerous quality mechanical properties through heat treating at various temperature ranges. 17-4 can be machined in the annealed condition and in the heat treated state. Maximum toughness is achieved by aging at 1150°F, while maximum strength is attained through aging at 900°F.
17-4 stainless steel has high tensile strength and hardness, and excellent corrosion resistance up to high temperatures. It is typically used in gate valves, chemical processing equipment, pump shafts, gears, ball bearings, bushings, and fasteners.
Product Description
| Standards | ASTM, ASME |
|---|---|
| Designation | A564, SA564, AMS 5643 |
| Grade | Stainless Steel 17 – 4 PH Round Bars |
| Range | Range – 3.17mm to 350mm dia |
| Types | Black Bars, Bar, Bright Bar, Square Bar, Hex Bar, Rods |
Chemical Compositions
| Element | C | Cu | Cr | Fe | Mn | Nb + Ta | Nb | Ni | P | S | Si | Ta |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Percentage | 0.07 max | 3 – 5 | 15 – 17.5 | 73 | 1 max | 0.15 – 0.45 | 0.45 max | 3 – 5 | 0.04 max | 0.03 max | 1 max | 0.45 max |
Mechanical Properties
| Attribute | Details |
|---|---|
| Alloy Attribute | PH |
| Tensile Strength, ksi | 190 |
| Yield Strength, ksi | 170 |
| Elongation in 2 Inches, % | 10 |
| Condition | H900 |
| Reduction of Area, % | 40;35 |
| Brinell Hardness | 366 |
Physical Properties
| Alloy Attribute | Details |
|---|---|
| Alloy Attribute | PH |
| Density lb/In³ | 0.28 |
| Specific Heat, BTU/°F/Lb 32 – 212°F | 0.11 |
| Thermal Conductivity, BTU/Ft²/Ft/HR/°F 212°F | 10.6 |
| Coefficient of Thermal Expansion, Per °F x 10⁻⁸ 32 – 212°F | 6 |
| Electrical Resistivity, Microhm – cm 70°F | 80 |
| Magnetic Permeability Annealed, μ | 95 |
Benefits of 17-4 PH Stainless Steel
17-4 PH Stainless Steel has many benefits across several industries and can be used for many applications. It is typically used in the industrial space, especially in manufacturing. Here are some of the benefits that 17-4 Steel offers:
- Superior Corrosion Resistance
- 17-4 PH stainless steel is incredibly resistant to corrosion due to its high mechanical strength. It can be exposed to acid or salt water, for instance, allowing it to be utilized in chemical processing or marine propulsion.
- High Yield Strength
- In certain industries, the weight of stainless steel can be a concern, which makes 17-4 PH stainless steel a good option for applications with high-stress levels.
- Good Heat Conductivity
- When high temperatures are present, 17-4 PH stainless steel is thermally conductive, allowing it to be a heat exchanger, and also offers low thermal expansion.
- Weldability
- If needed, 17-4 PH stainless steel can be welded with other types of metals, which means it can be used as both a conventional metal and a filler metal for different applications.
Applications:
- Aerospace and Gas Turbines
- Nuclear Reactors
- Paper Mills
- Oil and Gas Industry
- Chemical Process Components
Application
Agricultural Modernization
Construction Engineering
Environmental Protection Engineering
Food Processing Industry
Intelligent Home Appliances
Medical and Health Field
New Energy Infrastructure
