Table of Contents
- 15-5PH Stainless Steel Round Bars Overview
- Technical Specifications
- Mechanical Properties & Chemical Composition
- Types of 15-5PH Stainless Steel Round Bars
- Key Advantages of UNS S15500 Round Bars
- Key Applications of 15-5PH Stainless Steel Round Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
15-5PH Stainless Steel Round Bars Supplier & Exporter
Aurum Overseas is a leading 15-5PH Stainless Steel Round Bars Supplier offering ready-to-ship UNS S15500 Round Bars engineered for ultra-high strength and structural integrity. Ferrite-free and vacuum arc remelted (VAR), our precipitation-hardening bars eliminate directional weaknesses to protect mission-critical aerospace and defense components under heavy mechanical stress.
As a trusted 15-5PH Stainless Steel Round Bars Exporter, we stock certified ASTM A564 UNS S15500 Round Bars with EN 10204 3.1 Mill Test Certificates. Our inventory includes centerless ground 15-5PH Bright Bars, heavy 15-5PH Forged Bars, and custom cut-to-length options across multiple heat-treated conditions (Condition A, H900, H1025, H1150).
We export high-grade UNS S15500 Round Bars globally with rapid dispatch to key industrial hubs across North America, Europe, the Middle East, and Asia-Pacific, including the USA, Germany, UAE, Saudi Arabia, Singapore, and Australia.
Technical Specifications
| Technical Parameter | Stainless Steel 15-5PH (UNS S15500) |
|---|---|
| Material Designation | 15-5PH / XM-12 / UNS S15500 / Werkstoff 1.4545 |
| UNS Number | UNS S15500 |
| Manufacturing Standards | ASTM A564, AMS 5659, ASME SA564 |
| Diameter Capability | 3 mm to 500 mm (1/8" to 20" NB) |
| Length Specifications | 3 Meters, 6 Meters, Cut-to-Length |
| Dimensional Tolerances | ISO h8, h9, h10, h11, DIN 1013 |
| Delivery Conditions | Solution Annealed (Condition A) or Aged (H900, H1025, H1050, H1150) |
Mechanical Properties & Chemical Composition
Equivalent Grades of 15-5PH Round Bars
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| SS 15-5PH | 1.4545 | S15500 |
Chemical Composition of 15-5PH Round Bars
| Chemical Element | Composition Range (%) |
|---|---|
| Chromium (Cr) | 14.00 – 15.50 |
| Nickel (Ni) | 3.50 – 5.50 |
| Copper (Cu) | 2.50 – 4.50 |
| Columbium + Tantalum (Cb+Ta) | 0.15 – 0.45 |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Carbon (C) | 0.07 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
| Iron (Fe) | Balance |
Mechanical Properties of UNS S15500 Round Bars
| Property | Value (Aged Condition - H900 Peak Hardness) |
|---|---|
| Ultimate Tensile Strength | 1380 MPa (200,000 Psi) min |
| Yield Strength (0.2% Offset) | 1275 MPa (184,900 Psi) min |
| Elongation (%) | 10% min |
| Hardness (Brinell / Rockwell C) | 277 – 444 HB / C35 max |
| Density | 7.75 g/cm³ |
Types of 15-5PH Stainless Steel Round Bars
Aurum Overseas supplies ASTM A564 UNS S15500 Round Bars in precision bright and heavy forged conditions for aerospace and defense service.
15-5PH Bright Bars
15-5PH Forged Bars
Key Advantages of UNS S15500 Round Bars
Isotropic Transverse Toughness
Vacuum Arc Remelting (VAR) eliminates micro-segregation, ensuring uniform strength and impact toughness in both longitudinal and transverse directions.
Extreme Tensile Strength
Single-step low-temperature thermal aging boosts tensile strength up to 1380 MPa (200,000 Psi), doubling the load capacity of standard martensitic grades.
High Fabricability in Condition A
Machined effortlessly in the soft solution-annealed state, followed by low-temperature aging without distortion or scaling risks.
Superior Fracture & Stress Defense
Ferrite-free matrix provides high resistance to fatigue propagation and stress cracking under severe cyclical loads.
Key Applications of 15-5PH Stainless Steel Round Bars
| Industry Sector | Typical Components | Operating Conditions |
|---|---|---|
| Aerospace & Defense | Structural airframe fittings, landing gear pins, and actuator shafts | High dynamic stress, extreme mechanical loading, and fatigue exposure |
| Nuclear Engineering | Reactor rod control mechanisms, structural fasteners, and valve stems | High mechanical load, radioactive environment stability, and wear exposure |
| Oil & Gas Processing | High-pressure valve components, pump shafts, and downhole tools | High-pressure fluids, corrosive hydrocarbons, and heavy torsional shock |
| Chemical Processing | Mixer shafts, process valve stems, and pressure vessel bolts | Moderate corrosive chemicals, cyclical pressure, and wear resistance needs |
| High-Performance Marine | Hydrofoil struts, fast-craft shafting, and rudder stocks | High-velocity saltwater, dynamic impact, and heavy bending loads |
Quality Testing & Inspection
Every batch of 15-5PH Stainless Steel Round Bars supplied by Aurum Overseas undergoes strict quality testing:
- Positive Material Identification (PMI): XRF analysis verifies exact chemical compliance, including chromium (14.0–15.5%), nickel (3.5–5.5%), and copper (2.5–4.5%).
- Mechanical Property Verification: Tensile, yield, and hardness testing confirm compliance with ASTM A564/AMS 5659 mechanical limits.
- Microstructure & Delta Ferrite Analysis: Metallographic examination ensures zero or minimal delta ferrite content for isotropic toughness.
- Ultrasonic Examination: Full volumetric ultrasonic scanning per ASTM A388 confirms internal cleanliness free of voids or inclusions.
Global Export Markets
As an established 15-5PH Stainless Steel Round Bars Exporter, Aurum Overseas supplies fully certified UNS S15500 Round Bars to global energy and aerospace engineering centers:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
15-5PH is processed via Vacuum Arc Remelting (VAR) to eliminate delta ferrite, offering superior transverse toughness and microstructure uniformity compared to 17-4PH.
Yes. 15-5PH is supplied in Solution Treated Condition A and can be age-hardened at various temperatures (H900, H1025, H1050, H1150) to achieve specific combinations of strength and toughness.
Our stock fully complies with ASTM A564, AMS 5659, ASME SA564, and Werkstoff 1.4545 standards.
We stock diameters from 3 mm to 500 mm in ground bright and hot-forged finishes, available in standard lengths or custom cut-to-size options.
Yes. Every shipment includes complete EN 10204 3.1 Mill Test Certificates detailing heat chemistry, heat treatment history, and mechanical test results.
Contact Aurum Overseas
Aurum Overseas provides fully certified 15-5PH Stainless Steel Round Bars tailored for critical structural and defense applications.
Contact our technical sales team for stock availability, cut-to-size pricing, or instant quotes: