17-4 Stainless Steel Bar Cond-A, H1150, H1150D
As a leading 17-4 stainless steel round bar supplier, Ram Alloys crafts the precision stainless steel bar products your business needs. Known for its high strength and corrosion resistance, industries ranging from aerospace to medical and construction rely on this versatile alloy for success in part production. Our in-house inventory offers a wide range of sizes and heat-treated conditions that meet the demands of numerous critical applications.
17-4 Stainless Steel Bar Characteristics
The 17-4 stainless steel bars that we offer are a precipitation-hardening material utilized for its reliable performance and overall durability. This alloy is particularly beneficial for its ability to maintain strength under both high stress and corrosive conditions. Below are some of the primary characteristics of this stainless steel alloy and how our various industry partners use them.
Strength and Hardness
- Our 17-4 stainless steel round bars offer an integral combination of strength and hardness. Specifically in its solution-treated (Condition A) aged forms, this strong alloy achieves high tensile strength while experiencing minimal distortion during heat treatments.
- We offer a high-quality 17-4 Condition A round bar which is best for industries looking for parts that offer high fatigue resistance and consistent mechanical reliability.
Corrosion Resistance
- Along with its impressive mechanical strength, 17-4 stainless also delivers a strong resistance to corrosion – even in the harshest conditions. This durability makes it well-suited for aerospace hardware, chemical processing parts, and various medical instruments.
- Because we’re a long-time 17-4 stainless steel round bar supplier, Ram Alloys’ inventory meets the demanding standards of these complex industries, maintaining resistance to pitting, scaling, and general corrosion. You can take a look at our stainless offerings for even more material data.
Versatile Heat Treatment Options
Ram Alloys offers 17-4 stainless steel in multiple aging conditions. Our inventory provides H1150/H1150D round bar and 17-4 Condition A round bar options to allow for more tailored mechanical properties. Here’s how these two heat-treated options differ:
- 17-4 Condition A Round Bar (solution annealed): Provides high initial strength to hardness, making it ideal for parts that require machining prior to aging.
- H1150/H1150D Round Bar: These double-aged conditions allow for enhanced toughness while maintaining strong mechanical integrity. These are best for structural components and fatigue-resistant parts.
With Ram Alloy’s in-house processing capabilities, we provide quick turnaround times on custom-cut 17-4 stainless steel round bars – no matter the heat-treated series. This kind of flexibility makes it perfect for manufacturers in the aerospace, medical, and construction sectors to source the high-performing bar stock they require.
Common Applications
Because 17-4 stainless steel is a precipitation-hardened alloy, it’s extensively used in industries that require a combination of strength, hardness, and corrosion resistance. Here are some of the most prominent industrial applications professionals use 17-4 stainless steel round bar for:
- Pump Shaft Quality (PSQ) bars – engineered for critical rotating equipment requiring tight straightness and surface finish tolerances.
- Bearings and Bushings – where consistent hardness and wear resistance are essential.
- Nuclear Reactor Components – due to its stability and corrosion resistance under extreme conditions.
- Chemical Processing Equipment – including parts exposed to aggressive or acidic substances.
- Gas and Aircraft Turbine Components – where high strength and temperature resistance are key.
- Precision Castings – offering dimensional stability during heat treatment.
- Industrial and Aerospace Valves – designed to withstand both pressure and corrosion over long service life.
Chemical Composition Table
UNS: S17400 / TYPE: 630
| Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulpher (S) | Silicon (Si) | Chrome (Cr) | Nickel (Ni) | Molydenum (Mo) | Other Elements | |
|---|---|---|---|---|---|---|---|---|---|
| Min | 15.0 | 3.00 | 3.00 | Cb + Ta = 0.15-0.45 | |||||
| Max | 0.07 | 1.00 | 0.040 | 0.030 | 1.00 | 17.50 | 5.00 | 5.00 | Cb + Ta = 0.15-0.45 |
Mechanical Composition Table
| Grade | UNS Number | Tensile Min (psi) | Yield Min (psi) | Elongation Min % | Reductions Min % | Hardness BHN |
|---|---|---|---|---|---|---|
| 17-4 | S17400 | |||||
| Cond-A | * | * | * | * | 363 Max | |
| Cond- H900 | 190,000 | 170,000 | 10 | 40 | 233 Min | |
| Cond- H1025 | 155,000 | 145,000 | 12 | 45 | 331 Min | |
| Cond- H1075 | 145,000 | 125,000 | 13 | 45 | 311 Min | |
| Cond- H1150 | 135,000 | 105,000 | 16 | 50 | 277 Min | |
| Cond- H1150D | 125,000 | 105,000 | 16 | 50 | 255-311 |
Request a Quote for 17-4 Stainless Steel Round Bars Today
Whether you need a 17-4 Condition A round bar or H1150/H1150D round bar options, Ram Alloys has the inventory and expertise you need to fulfill your project’s requirements. Our team is proud to support a wide range of industries, always offering fast turnaround times, precision cutting, and responsive customer service that can answer any questions that may arise.
When you need a trusted 17-4 stainless steel round bar supplier, we’re here to help you find the right material solution. All you have to do is request a quote or contact our expert team today to get started.
Need more information? click here for a quote or call us at 713.466.1890 to speak with a Ram Alloys representative.