What is the hardness of 17-4 PH?
17-4 PH Stainless Steel Properties
| Condition | Ultimate Tensile Strength (PSI) | Hardness Rockwell |
|---|---|---|
| H900 | 190,000 | C40 |
| H1025 | 155,000 | C35 |
| H1075 | 145,000 | C32 |
| H1150 | 135,000 | C28 |
What are the properties of 17-4PH stainless steel?
As a martensitic precipitation hardening stainless it is characterised by high tensile strength and high yield strength obtained by solution annealing, followed by a single or double low temperature age hardening treatment. 17-4PH has corrosive properties comparable to 304 austenitic stainless steel in many environments.
When to heat treat alloy 17-4PH h1150?
Cool forgings to below 90°F to ensure grain refinement. Alloy 17-4 is limited to mild operations since in the annealed (solution treated) condition the material is hard. For severe cold working the material should be heat treated to condition H1150. This will help prevent possible cracking. Bend radius in excess of 7T is often required.
What are the mechanical properties of alloy 17-4PH?
17-4PH combines high strength and hardness with good corrosion resistance. The alloy is furnished in the solution annealed condition (Condition A). It should not be used at temperatures above 572°F (300°C) or for cryogenic service. Optimal mechanical properties can be obtained by subjecting the alloy to age hardening heat treatments.
What kind of corrosion resistance does alloy 17-4 have?
It is one of the most widely used precipitation hardening grades, as it has high strength hardness up to about 572°F while demonstrating good corrosion resistance in all heat treated conditions. Alloy 17-4 has adequate resistance to atmospheric corrosion or in diluted acid salts where its corrosion resistance is equivalent to Alloy 304 or 430.