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For over a decade, Diaz Sheetsandplates has been a trusted name in Manila’s industrial supply sector, providing high-performance materials to the Philippine market. We take pride in supplying the demanding Stainless Steel 13-8 PH Circle, a material chosen for critical applications where failure is not an option. This unique grade stands apart due to its remarkable combination of high strength and excellent corrosion resistance, making it the go-to choice for engineers and fabricators who require unwavering reliability in their finished components.
The Stainless Steel 13-8 PH circle is defined by its specific martensitic precipitation-hardening composition, primarily chromium and nickel, with a crucial addition of 2.3% molybdenum. This alloy blend allows it to be heat-treated to achieve exceptional mechanical properties. It reliably reaches tensile strengths that can exceed 1350 MPa, coupled with impressive toughness and good ductility. This means components fashioned from these circles can withstand immense stress and strain without fracturing, even in challenging environments.
| Specifications | ASTM A240, ASME SA240 |
| Dimensions | ASTM, ASME and API |
| Standard | JIS, AISI, ASTM, GB, DIN, EN, etc. |
| Thickness | 1 Mm To 100 mm. |
| Diameter | Upto 2000 Mm. |
| Circle Diameter | 3″ DIA up to 38″ DIA 1500 lbs max. |
| Circles Form | Hot Rolled Circles, Cold Rolled Circle, Proof Machined Circles. |
| Cr 12.25 – 13.23% | Ni 7.50 – 8.50% | Mo 2.00 – 2.50% | Al 0.90 – 1.35% | N 0.010% | |||||
| Mn 0.10% | Si 0.10% | C 0.05% | P 0.010% | S 0.008% |
| Tensile (UTS)N/mm² | 0.2% YieldN/mm² | Elongation(50.8mm) %) | HardnessHRc | Reductionof Area |
| 1965 | 1896 | 2 | 57 | 10 |
| Alloy | UNS Number | SAE Number |
| 13-8 PH | UNS S13800 |
| Density | Electrical conductivity (% IACS) | Thermal conductivity (BTU-in/hr-ft²-°F) | Specific heat capacity | Thermal expansion (1/°F) | Melting Point (°F) |
| 0.282 | 1.72 | 97 | 0.11 | 0.00000589 | 2560 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless steel 13-8 PH Circle provides exceptional strength, corrosion resistance and toughness, making it ideal for aerospace, marine, and high-stress applications Its precipitation hardening properties ensure superior mechanical performance and dimensional stability. The alloy’s excellent resistance to stress corrosion cracking and oxidation makes it durable in harsh environments. Its mechanical and weldability allows versatile design, while the uniformity of the material ensures reliable performance in critical applications. With excellent strength coupled with fatigue resistance, stainless steel 13-8 pH spheres are a cost-effective robust option for complex industrial and architectural applications.
Because of its robust nature, you’ll find the 13-8 PH circle in applications where safety and performance are critical. It is extensively used in aerospace components like landing gear parts and engine fittings, as well as in the oil and gas industry for high-pressure valves and pump shafts. Its resistance to stress corrosion cracking also makes it ideal for marine hardware and surgical instruments. Essentially, wherever a part must be incredibly strong, corrosion-resistant, and highly dependable, this material delivers unparalleled performance.
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