SS 17- 7PH Machinability
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Machinability of stainless steel Grade 17-7 PH is rated at 75 % of B1112. On machining, this alloy shows long gummy chips and requires chip breakers. While machining will provide excellent results the slow speeds and constant feeds are recommended.
Applications
Stainless Steel Grade 17-7 PH is basically utilized for applications requiring corrosion resistance, good strength, and mechanical properties up to 427°C (800°F) in operation. It is commonly utilized for intricate parts because of its low distortion in heat treatment. Stainless steel grade 17-7 PH finds uses in the following:
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Variety of springs and washers
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Chemical processing equipment
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Heat exchangers
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Power boilers
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Super heater tubes
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Components used in high-strength/high-temperature conditions
Chemical Composition %
| Grade | C | Al | Si | P | S | Cr | Mn | Ni | Fe |
| SS 17-7PH | 0.09 max | 0.75 - 1.50 | 1.0 max | 0.04 max | 0.03 max | 16.0 - 18.0 | 1.0 max | 6.50 - 7.75 | Remainder |
Mechanical Properties
| Tensile Strength (ksi) |
0.2% Yield Strength (ksi) |
Elongation% in 2 inches |
| 120 | 45 | 35 |
Environment
Safety
CSR