Mitchell Stainless, a trusted manufacturer and supplier in Hamilton, New Zealand, provides high-quality Stainless Steel 17-7 PH pipes designed for high-strength, corrosion-resistant, and precision piping applications. 17-7 PH is a precipitation-hardening stainless steel that offers excellent tensile strength, hardness, and toughness after heat treatment, making it ideal for aerospace, chemical, and industrial piping systems. Mitchell Stainless ensures each pipe meets stringent quality standards, providing uniform dimensions, smooth surface finishes, and consistent mechanical performance. These pipes are engineered to deliver reliable, durable, and high-performance solutions for demanding environments requiring strength, corrosion resistance, and thermal stability.
Stainless Steel 17-7 PH pipes are composed primarily of iron, with 16–17% chromium, 6–7% nickel, 0.5–0.7% copper, and small amounts of manganese, silicon, and carbon. This composition provides excellent corrosion resistance, high tensile strength, and hardness after precipitation hardening. Chromium and nickel ensure oxidation resistance and mechanical stability, while copper enhances hardness and toughness. These pipes maintain structural integrity, durability, and resistance to wear, making them suitable for industrial and high-stress applications where strength, corrosion resistance, and dimensional accuracy are critical.
| Standard | 17-7PH / 1.4568 |
|---|---|
| Size | 1/8” to 48”, Seamless Pipes up to 24” |
| Designation | ASTM A312, ASME SA312, ASTM A269, ASTM A213, ASTM A249, ASTM A270, ASTM A511, ASTM A554, ASTM A778, ASTM A908, ASME SA249 |
| Thickness | 0.4mm up to 30.00 mm, Schedules 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH |
| Type | Seamless, Welded, Cold Drawn, Structural, Hot Finished, Extruded, Annealed & Pickled |
| Form | Round, Square, Rectangular |
| Length | Standard 6-6.1 meter length, 20 Ft, Custom Cut Lengths |
| Application | Variety of springs and washers, Chemical processing equipment, Heat exchangers, Power boilers, Superheater tubes, Components used in high-strength/high-temperature conditions. |
| Element | Content (%) |
|---|---|
| Chromium, Cr | 16-18 |
| Nickel, Ni | 6.50 – 7.75 |
| Manganese, Mn | 1 max |
| Silicon, Si | 1 max |
| Aluminum, Al | 0.75 – 1.50 |
| Carbon, C | 0.09 max |
| Phosphorous, P | 0.040 max |
| Sulfur, S | 0.030 max |
| Iron, Fe | Balance |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 1170 MPa | 170000 psi |
| Yield strength | 965 MPa | 140000 psi |
| Modulus of elasticity | 204 GPa | 29600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break | 6% | 6% |
| Hardness, Rockwell C | 38 | 38 |
Contact us to get a quick quote for your requirement.
We tests Stainless Steel 17-7 PH pipes to the utmost extent to assure superior quality and performance. All batches are strictly inspected, and mechanical property tests, corrosion resistance checks, and dimensional accuracy checks are performed on each batch. Pipes are supplied with test certificates that are in compliance with industrial standards.
High-quality 17-7 PH stainless steel pipes offer exceptional strength, corrosion resistance, and durability. Perfect for demanding industrial applications, they provide reliable performance in extreme conditions and harsh environments.
ASTM A312 SS 17-7 PH ERW pipes deliver outstanding strength and corrosion resistance. Ideal for high-stress applications, they ensure durability and reliable performance in challenging industrial environments and applications.
Stainless Steel 17-7 PH capillary pipes offer superior strength and corrosion resistance. Ideal for precision applications, they ensure reliability and durability in demanding environments, combining high performance with long-lasting quality.
SS 17-7 PH spiral welded pipes offer high strength and corrosion resistance, ideal for aerospace and industrial applications. Their spiral weld construction enhances durability and performance in demanding environments.
17-7 PH SS electropolished pipes offer superior corrosion resistance and a smooth finish. Ideal for sanitary and high-performance applications, they provide enhanced durability and reliability in demanding environments.
SS 17-7 PH slot round pipes feature exceptional strength and corrosion resistance with precision slots. Ideal for structural and filtration applications, they ensure durability and high performance in demanding conditions.
Stainless Steel 17-7 PH pipes are widely used in aerospace, chemical processing plants, petrochemical industries, marine applications, and industrial piping systems requiring high strength and corrosion resistance. Typical applications include high-pressure piping, structural tubing, and process lines exposed to mechanical stress, high temperatures, or corrosive environments. They are also used in maintenance and repair projects where reliable, long-lasting, and high-performance piping solutions are required. In New Zealand’s industrial and fabrication sectors, 17-7 PH pipes are valued for producing durable, precise, and corrosion-resistant systems capable of withstanding demanding operational, mechanical, and environmental conditions.
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