Hitech
17-4 PH alloy
Alloy 17-4 PH
At Merrem & la Porte, we also stock 17-4 PH. This alloy is also known as SAE type 630, UNS 17400 or simply 17-4. This alloy is a martensitic, precipitation hardening steel with good corrosion resistance. Alloy 17-4 PH contains chromium, nickel and copper.
Where is alloy 17-4 PH commonly used?
This alloy is often used in the oil and gas industry, aerospace and motorsports. In these industries, we find it in gate valves, pump shafts, gears, pistons, fasteners and more.
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Chemical composition (weight%) |
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Grade |
Cr | Ni | C | Mn | Si | P | S |
|
17-4 PH |
15-17.5 |
3-5 | 0.07 | 1 | 1 | 0.04 | 0.03 |
Martensitic stainless steel
Alloy 17-4 PH falls under the martensitic stainless steel. In this stainless steel grade, chromium is the main alloying element. Martensitic stainless steel is characterized by its high hardness and corrosion resistance. As a result, 17-4 PH is widely used in situations where strength, wear resistance and corrosion resistance are required.
About alloy 17-4 PH
In alloy 17-4 PH, the high corrosion resistance of stainless steel is combined with high strength. This alloy has a high tensile strength and hardness up to 316 degrees Celsius. Also, 17-4 PH has a high resistance to oxidation (up to 593 degrees Celsius). Unlike other types of stainless steel, alloy 17-4 is weldable.
| Features alloy 17-4 PH | |
|---|---|
| Density | 7,81 g/cm³ |
| Cross-contraction coefficient | 0.272 |
| Melting point | 1404,04 - 1440,6 °C |
| Electrical Resistance | 7.7 x 10^-7 Ωm |
Availability Alloy 17-4 PH
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