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17-7
Stainless Steel 17-7 Product Guide
Applications | Specifications | Mechanical and Chemical Data | Tolerances
Overview
The most formable of all precipitation-hardening stainless and provides high strength and hardness. The valuable mechanical properties of 17-7 stainless sheet makes it particularly well suited for aerospace applications as well as its low distortion in heat treatment makes it a common choice for intricate parts. Typically used in aerospace parts, chemical processing equipment, springs, washers, heat exchangers, power boilers, and other high temperature applications.
Common Trade Names
UNS S17700, SAE J217, AK Steel 17-7 PH®*, 17-7PH, 17-7 PH, 17/7PH, 17/7 PH, Precipitation Hardening
*AK Steel 17-7 PH® is a registered trademark of AK Steel Holding Corporation.
Other Resources
Safety Data Sheet | Weight Calculator | Mill Test Reports
Products
Applications
- Aerospace
- Chemical Processing Equipment
- Springs
- Washers
- Heat Exchangers
- Power Boilers
- High Temperature Applications
Stainless 17-7 Specifications
ASTM | AMS |
|---|---|
| A313 | 5528 |
| A564 | 5529 |
| A579 | 5568 |
| A693 | 5644 |
| A705 | 5678 |
| Physical Properties 17-7 | |||||
| Annealed | |||||
|---|---|---|---|---|---|
| Density | 0.282 lb/in3 | ||||
| Ultimate Tensile Strength | 105 ksi | ||||
| Yield Tensile Strength | 56 ksi | ||||
| Shear Modulus | 11,000 ksi | ||||
| Shear Strength | 110 ksi | ||||
| Hardness Rockwell | Brinell | B83 | 156 | ||||
| Elongation at Break Percentage | 29% | ||||
| Reduction of Area | 75% | ||||
| Modulus of Elasticity | 28,500 ksi | ||||
| Poisson's Ratio | 0.28 | ||||
| Machinability Percentage | 75% | ||||
| Melting Point | 2,550-2,620 °F | ||||
| Specific Heat | 1.2 x 10^-1 BTU/lb-°F | ||||
| Thermal Conductivity | 107 BTU-in/hr-ft^2-°F | ||||
| Electrical Conductivity | 2.3% IACS | ||||
|
Chemistry Information
|
|
Element |
Percentage |
| C | 0.09 max |
| Mn | 1 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1 max |
| Cr | 16 - 18 |
| Ni | 6.5 - 7.75 |
| Al | 0.75 - 1.5 |
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