AMS 5629 13-8 Ph Round Bars
Dec 17, 2025
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If you're looking for high-strength, corrosion-resistant stainless steel bars for critical applications, AMS 5629 13-8 PH round bars are an ideal choice. Known for their excellent mechanical properties and resistance to extreme environments, these round bars are widely used in industries such as aerospace, defense, and manufacturing, where precision and durability are paramount.
What is AMS 5629 13-8 PH round bar?
AMS 5629 13-8 PH round bar is a high-strength martensitic precipitation-hardening stainless steel alloy (UNS S13800) designed for demanding aerospace and industrial applications. It offers excellent strength, hardness, toughness, and good corrosion resistance. This alloy is manufactured to specific aerospace standards, utilizing a vacuum melting process to achieve superior performance. It is typically supplied in a solution-treated condition for final aging treatment. It is suitable for high-stress components in aircraft, landing gear assemblies, and other demanding mechanical parts.
AMS 5629 13-8 PH round bar specification
| Standard |
ASTM A276, ASTM A479/A479M, ASTM A484/A484M, ISO 683-13 |
|---|---|
| Length |
Customized |
| Diameter |
3 mm to 500 mm (0.12-19.7 in), Customized |
| Shape |
Angle Bar, Channel Bar, Customized, Flat, Hexagonal, Rectangular, Round, Square, T-Bar |
| Surface Finish |
2B, BA, Black, Brushed, Customized, Peeled, Polished |
| Technique |
Cold Drawn, Cold Rolled, Hot Rolled |
| Form |
Bar in various shapes, Cold-Finished Bars, Customized, Flat Bar, Forged Bars, Hollow Bar, Hot-Rolled Bar, Rod, Round Bar, Threaded Bar |
Chemical Composition:
| Symbol | Element | Min % | Max % |
|---|---|---|---|
| C | Carbon | 0.05% | |
| Mn | Manganese | 0.10% | |
| Si | Silicon | 0.10% | |
| P | Phosphorus | 0.010% | |
| S | Sulfur | 0.008% | |
| Cr | Chromium | 12.25% | 13.25% |
| Ni | Nickel | 7.50% | 8.50% |
| Mo | Molybdenum | 2.00% | 2.50% |
| N | Nitrogen | 0.010% | |
| Al | Aluminum | 0.90% | 1.35% |
| Fe | Iron | Balance |
Mechanical Properties:
| Condition | Tensile | Yield 0.2% offset | Elongation (%in 2") | Reduction of Area | Brinell Hardness | Rockwell Hardness |
|---|---|---|---|---|---|---|
| Ann | 175 ksi max | 363 max | ||||
| H950 | 220 ksi | 205 ksi | 10% | 45% | C45 min | |
| H1000 | 205 ksi | 190 ksi | 10% | 50% | C45 min | |
| H1025 | 185 ksi | 175 ksi | 11% | 50% | ||
| H1050 | 175 ksi | 165 ksi | 12% | 50% | C40 min | |
| H1100 | 150 ksi | 135 ksi | 14% | 50% | C34 min | |
| H1150 | 135 ksi | 90 ksi | 14% | 50% | C30 min |
What is the maximum operating temperature for AMS 5629 13-8 PH round bars?
AMS 5629 13-8 PH round bars are designed to perform well at temperatures up to 600°F (316°C). This makes them suitable for high-temperature applications in industries like aerospace and manufacturing.
Can AMS 5629 13-8 PH round bars be welded?
Yes, AMS 5629 13-8 PH can be welded, but it's important to use the correct procedures and filler materials to maintain the material's properties after welding.
Are there any alternative materials to AMS 5629 for high-strength round bars?
While AMS 5629 is an excellent choice for many high-strength applications, alternatives like AMS 6308 or AMS 5643 might be considered based on the specific application and environment.
GNEE is a steel supplier and manufacturer, we produce different types of steel bars including AMS 5629 13-8 PH Bar. We offer customization services and have a range of surface finish options.
Our products: AMS 5629 13-8 PH Round Bar, 13-8 PH Flat Bar, 13-8 PH Bar & Rod, Square Bar, Hexagonal Bar, 13-8 PH Cold Drawn Bar, 13-8 PH Cold-Rooled Bar, 13-8 PH Hot- Rolled Bar, 13-8 PH Bright Bar, 13-8 PH Angle Bar, Channel Bar, T-Bar, Bars for Fabrication or DIY.
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If you want to know more details and prices of the products, please contact us in time! Email:sales@gneestainless.com



At GNEE, we prioritize the secure and efficient delivery of all our products, including AMS 5629 13-8 PH round bars. Here's what you can expect when ordering:
Packaging: Our round bars are carefully packaged in moisture-proof materials and reinforced with wooden boxes or pallets to ensure safe delivery.
Shipping: We offer reliable shipping options globally, including express and standard freight services. We ensure that all items are delivered on time and in perfect condition.
Delivery Time: Typical delivery times for AMS 5629 13-8 PH round bars are between 7 to 15 days, depending on the destination and shipping method.

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