What type of material is 17-4?
stainless steel
17-4 stainless steel, also known as SAE Type 630, is a common and exceptionally durable type of steel used in a diverse variety of industries and applications. The numbers “17-4” refer to its composition: ≈17% chromium and ≈4% nickel. It also can include between 3 and 5% copper.
How do I know what grade my stainless steel is?
Remove the oxide layer on the steel, put a drop of water, rub it with copper sulfate, and if it does not change color after rubbing, it is usually stainless steel. If it turns purple, the non-magnetic steel is high manganese steel, and the magnetic steel is generally ordinary steel or low alloy steel.
How can I check my SS material?
The simplest chemical test to distinguish carbon steel from a magnetic stainless steel is to apply a drop of nitric acid. The carbon steel will react – the stainless will not.
What type of stainless steel is 17 4 PH?
SAE Type 630 stainless steel
SAE Type 630 stainless steel (more commonly known as 17-4 PH, or simply 17-4; also known as UNS 17400) is a grade of martensitic precipitation hardened stainless steel. It contains approximately 15–17.5% chromium and 3–5% nickel, as well as 3–5% copper.
Can a Grade 17-4 stainless steel be machined?
Grade 17-4 stainless steel can be machined in the annealed condition. This alloy has long and gummy chips. Before final hardening, post machining solution treatment is needed if it is machined in the H1150M condition. Grade 17-4 stainless steel can be formed mildly.
What kind of alloy is 17-4 stainless steel?
Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance.
What can type 17-4 PH stainless steel be used for?
Type 17-4 PH stainless steel has applications in industries like paper, petrochemical, aerospace and food processing. It is widely used in various general metalwork applications. The alloy has superior resistance to corrosion and has high mechanical strength.
Which is better stainless steel Type 304 or 17-4?
Type 17-4 PH stainless steel withstands corrosive attack better than any of the standard hardenable (martensitic) stainless steels and is comparable to Type 304 in most media. The alloy exposed to seacoast atmosphere will gradually develop overall light rusting and pitting in all heat-treated conditions.