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Saif Sheets and Plates is a trusted manufacturer and supplier in Muscat, Oman, offering premium-quality Stainless Steel 13-8 PH Circles for industries that require exceptional strength, toughness, and corrosion resistance. Stainless Steel 13-8 PH is a precipitation-hardening martensitic stainless steel engineered for superior mechanical performance in aerospace, industrial, and chemical applications. Saif Sheets and Plates ensures every circle meets international quality standards, delivering precision, durability, and long-term reliability. These circles are ideal for aerospace structural components, fasteners, springs, and machinery parts where a combination of high mechanical performance, hardness, and corrosion resistance is essential.
Stainless Steel 13-8 PH Circles are composed of iron, chromium (12–14%), nickel (7–8%), copper (2–3%), and small amounts of niobium and titanium. This precipitation-hardening alloy provides high tensile strength, hardness, and good corrosion resistance. SS 13-8 PH Circles typically exhibit a tensile strength of 1,100–1,400 MPa, yield strength of 950–1,200 MPa, and elongation of 8–15%, depending on heat treatment. Their combination of toughness, hardness, and corrosion resistance makes them suitable for high-performance mechanical applications requiring both strength and durability.
| 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.
Stainless Steel 13-8 PH Circles are widely used in industries where high strength, hardness, and corrosion resistance are critical. Common applications include aerospace components, springs, fasteners, precision machinery parts, and chemical processing equipment. They are also employed in structural assemblies, automotive components, and industrial machinery requiring wear resistance and mechanical reliability. With excellent heat treatability, weldability, and mechanical stability, SS 13-8 PH Circles provide dependable performance in challenging environments. Their durability, versatility, and superior mechanical properties make them ideal for aerospace, industrial, chemical, and marine applications.
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