Stainless steel grade 17-7 PH is a precipitation hardened stainless steel that demonstrates high strength, hardness, excellent fatigue properties, good formability, good corrosion resistance, and minimal distortion upon heat treatment. Precipitation-hardened stainless steels have high strength and high corrosion resistances making this material well suited for aerospace applications.
17-7 PH has been a good material for use in fresh water, industrial atmospheres, as well as mild chemical and oxidizing environments. Though this material has proven useful in the aforementioned applications, 17-7 PH should not be designed into systems that come in contact with salt water.
Stainless Steel product forms offered at all Titanium Industries’ locations:
Stainless Steel Grade 17-7 PH Applications:
- Various springs and washers
- Chemical processing equipment
- Heat exchangers
- Boilers
- Super-heater tubes
- Components used in high-strength and/or high-temperature conditions
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Cr 16 – 18% | Ni 6.5 – 7.75% | Si 1% Max | Al 0.75 – 1.50% | C 0.09% Max | |||||
| P 0.040% Max | S 0.030% | Fe Balance | |||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density | Electrical conductivity (% IACS) | Thermal conductivity (BTU-in/hr-ft²-°F) | Specific heat capacity | Thermal expansion (1/°F) | Melting Point (°F) | |
| 0.282 | – | 114 | – | 0.00000611 | – | |
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | – | 140 | |||||||
| Tensile Strength Range (Rm) (ksi) | – | 170 | |||||||
| Elongation (AL=5 x Ø) | – | 6% | |||||||
| Brinell Hardness (H) | – | – | |||||||
| Modulus of Elasticity (ksi) (E): 296000 | |||||||||
| Machineability General Index: – | |||||||||
All service center locations are AS9100 & ISO9001 accredited.
Birmingham, UK and Meerbusch, Germany service center locations are AS9100, AS9120 & ISO9001 accredited.
T.I. Approvals:
Plus a wide range of approvals from most leading OEM’s across Aerospace, Medical, Industrial, and Oil and Gas markets.