17-7 PH
17-7 PH
17-7 PH is a precipitation-hardening stainless steel offering high strength, toughness, and corrosion resistance. It performs reliably under demanding conditions and elevated temperatures. Widely used in aerospace, chemical, and petrochemical industries, it ensures long-term durability and consistent performance. The alloy’s chromium and nickel content enhance oxidation and corrosion resistance, ensuring stability in harsh environments. Controlled heat treatment provides uniform mechanical properties and dimensional accuracy. These qualities make 17-7 PH ideal for precision springs, washers, and structural components.
At Apar Alloys, we are a reliable stockist and supplier of high-quality PH Alloy 17-7 PH materials sourced from reputed global mills. Our inventory includes bars, rods, sheets, and forgings in various dimensions and conditions. Every product undergoes strict inspection and certification to ensure reliability and quality compliance. We deliver materials that meet the highest international standards for strength, performance, and precision. With Apar Alloys, customers receive trusted materials built for durability and excellence.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 17-7 PH | AISI 17-7 PH | S17700 | ASTM A564 / A693 | ASTM A705 | 1.4568 | X7CrNiAl17-7 |
General Characteristics
Precipitation-hardening stainless steel with excellent strength and formability
Good corrosion and oxidation resistance in industrial environments
High tensile and yield strength after heat treatment
Maintains stability and hardness at elevated temperatures
Excellent spring properties and fatigue resistance
Suitable for aerospace and high-performance mechanical applications
Chemical Composition (nominal) %
| Element | C | Si | Mn | P | S | Cr | Ni | Al | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 17-7 PH | ≤0.09 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 16.00–18.00 | 6.50–7.75 | 0.75–1.50 | Balance |
Applications
Aerospace springs, washers, and diaphragms
Chemical processing and refinery components
High-strength industrial fasteners and fittings
Petrochemical and power generation equipment
Automotive and mechanical precision components
Heat-resistant and structural hardware assemblies
Advantages
- High strength-to-weight ratio
- Excellent fatigue and spring properties
- Good corrosion and oxidation resistance
- Stable mechanical performance at high temperatures
- Easy to form and machine in annealed condition
- Superior dimensional control after heat treatment
Mechanical Properties (Typical at Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 1250 – 1550 |
| Yield Strength (MPa) | 1070 – 1310 |
| Elongation (%) | 6 – 10 |
| Hardness (Brinell) | 340 – 390 HB |
Why Choose Apar Alloys
Reliable Stockist & Supplier
We maintain a wide range of PH alloys ready for immediate dispatch.
Sourced from Trusted Global Mills
All materials are procured from reputed international manufacturers.
Stringent Quality Checks
Every batch is tested and certified to ensure compliance and consistency.
Custom Sizing & Finishing
We offer tailored sizing, cutting, and surface finishing as per project needs.
Competitive Pricing & On-Time Delivery
Apar Alloys ensures reliable supply at cost-effective rates with timely dispatch.
Dedicated Client Support
Our expert team provides technical guidance and smooth coordination for all orders.
Get in Touch
Contact Us
Looking for a reliable source for PH Alloy 17-7 PH materials? Connect with Apar Alloys today for quotes, technical guidance, and customized supply solutions.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
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